Nigerian Phone Number Format Explained

Nigeria uses the country code +234. Inside the country, both mobile and landline numbers carry a leading 0 trunk prefix. Mobile numbers are 11 digits in national format and start with prefixes like 070, 080, 081, 090, and 091. Landlines pair a geographic area code — Lagos 01, Abuja 09 — with a local subscriber number.

When you dial Nigeria from abroad, you drop that leading 0 and add +234. From the US the full string is 011 + 234 + national number without the leading 0. This guide covers the complete Nigerian phone number format — country code, area codes, mobile versus landline, dialing from the US, emergency and toll-free ranges, and a side-by-side comparison with the US format.

For a focused, step-by-step dialing walkthrough, see the companion guide how to call Nigeria from the US.

What Is the Nigerian Phone Number Format?

Every Nigerian phone number, whether mobile or landline, follows the same underlying logic. There is a country code, a national trunk prefix, a prefix or area code that identifies the number type or location, and a subscriber number that identifies the specific line.

The country code is +234. This is the fixed international identifier for Nigeria and never changes. You only use it — in its +234 or 234 form — when the call originates outside Nigeria or when you store a number in international format.

Inside Nigeria, numbers are written with a leading 0. This 0 is the national trunk prefix. It tells the domestic network that the digits that follow are a full national number rather than a local extension. The 0 is essential for dialing inside the country and equally essential to remove when dialing in from abroad.

After the leading 0 comes either a mobile prefix or a landline area code. Mobile prefixes such as 080 or 070 identify the number as a cellular line. Landline area codes such as 01 (Lagos) or 09 (Abuja) identify a geographic region. The remaining digits are the subscriber number.

The practical takeaway is a single rule that governs almost everything else in this guide: the leading 0 and the +234 country code are mutually exclusive. You use the 0 for domestic dialing, and you replace it with +234 for international dialing. You never use both together.

Mobile numbers dominate Nigerian telephony. The overwhelming majority of active lines are cellular rather than fixed landline, so most numbers a US business will encounter start with a mobile prefix like 080 or 081 rather than a landline area code.

It helps to think of a Nigerian number as a set of nested containers. The country code is the outermost layer and only appears for international calls. The trunk 0 is the domestic equivalent of that outer layer. Inside sits the prefix or area code, and at the center is the subscriber number that uniquely identifies the line.

Because the outer layer changes depending on where the call originates, the same physical phone line has two valid written forms: a national form beginning with 0 and an international form beginning with +234. Both point to exactly the same handset. The rest of this guide is a set of rules for converting cleanly between those two forms.

The Nigeria Country Code (+234)

The Nigeria country code is +234. In a fully written international number it always sits at the front, immediately after the plus sign, like +234 803 xxx xxxx. The plus sign is a placeholder that stands in for whatever international access code the caller’s country requires.

When you actually dial, you replace the plus sign with your local exit code. From the United States and Canada that exit code is 011. So a call placed from a US phone becomes 011 234 … rather than +234 …. Mobile phones let you press and hold 0 to produce the + directly, which is why + is the portable, universal way to store a number.

Nigeria’s own exit code — the code someone in Nigeria dials to call out of the country — is 009. A person in Lagos calling a US number would dial 009 1 followed by the US 10-digit number. That detail matters if you are advising Nigerian colleagues or customers on how to reach your US office.

Here is how the country code fits into the two directions of an international call:

Direction	Structure	Example
US → Nigeria	011 + 234 + national number (drop leading 0)	011 234 803 xxx xxxx
Nigeria → US	009 + 1 + US 10-digit number	009 1 415 xxx xxxx

The +234 code applies to every Nigerian number type — mobile, landline, and toll-free alike. What changes between number types is not the country code but the prefix or area code that follows the trunk 0.

Store every Nigerian contact in your CRM or phone system in the +234 international (E.164) format. That way the number dials correctly regardless of where your team is physically located, and it satisfies the format most business phone platforms expect.

The reason the + notation is worth insisting on is portability. A number stored as 011 234 803 123 4567 only works when dialed from North America, because 011 is the North American exit code. The same contact stored as +234 803 123 4567 works from any country, because each device substitutes its own local exit code for the +. For a distributed team, that difference matters.

One more detail about the country code: 234 is fixed and unambiguous, but the digits that follow it are what change between number types. Whether you are dialing a Lagos landline, an Abuja office, or a mobile in any city, the 234 is identical — the variation lives entirely in the trunk-0 prefix or area code beneath it.

Nigeria Area Codes

Landline numbers in Nigeria are geographic. Each city or region has an area code, and that code carries a leading 0 when dialed inside Nigeria. Because Nigeria’s numbering evolved over decades, area code lengths vary — Lagos and Abuja have short codes, while many other cities have three-digit codes.

The table below lists major Nigerian landline area codes in their national (with-0) form. Remember that when you dial from abroad you drop the leading 0, so Lagos 01 becomes simply 1 after +234.

City	Area code (national)	From abroad (after +234)
Lagos	01	1
Abuja	09	9
Ibadan	02	2
Port Harcourt	084	84
Kano	064	64

Beyond those five, several other cities have widely used area codes. Kaduna is 062, Enugu is 042, and Benin City is 052 in national format. In international form these become 62, 42, and 52 respectively, once the leading 0 is dropped.

Landline subscriber number lengths in Nigeria vary by area and by exchange. A city with a short two-digit area code like Lagos (01) tends to pair it with a longer local number, while cities with three-digit codes pair them with shorter local numbers. There is no single fixed total length across all Nigerian landlines the way there is for mobile numbers.

For a US-based comparison of how domestic area codes work, our area codes directory covers the US numbering plan in detail. The organizing principle is similar — a geographic code plus a local number — even though the specific rules differ between the two countries.

In practice, US businesses will encounter Nigerian landlines far less often than mobiles. Fixed lines are concentrated in offices, hotels, government bodies, and older established businesses, whereas individuals and most small businesses operate primarily on mobile.

When you do handle a landline, the safest approach is to work from the national form and mechanically remove the single leading 0. A Lagos number written 01 234 5678 nationally becomes +234 1 234 5678 internationally. An Enugu number on 042 becomes +234 42 …, and a Benin City number on 052 becomes +234 52 …. The transformation is always the same: strip one 0, prepend +234.

Because landline subscriber lengths are not uniform, do not assume a Nigerian landline will have the same digit count as a mobile. Copy the number exactly as provided, remove only the leading 0 for international use, and avoid padding or truncating it to match a mobile’s 11-digit shape.

Nigeria Mobile vs Landline Numbers

The single most important distinction in the Nigerian format is mobile versus landline, because it changes both the prefix and the length of the number.

Mobile numbers are the dominant line type in Nigeria. In national format a mobile number is 11 digits, including the leading 0. The structure is 0 + a three-digit mobile prefix + a seven-digit subscriber number, commonly written as 080x xxx xxxx.

Common Nigerian mobile prefixes include 070, 080, 081, 090, and 091, among others. So a typical mobile number looks like 0803 xxx xxxx, 0810 xxx xxxx, or 0905 xxx xxxx in national form. Because number portability exists, the prefix does not reliably tell you which carrier currently serves the line.

In international format, drop the leading 0 and add +234. The mobile number 0803 123 4567 becomes +234 803 123 4567. Counting the country code, that is 13 digits total. This E.164 form is what you store and what most phone systems expect.

Landline numbers are geographic and structured differently. A landline combines the leading 0, a geographic area code (like Lagos 01 or Kano 064), and a local subscriber number. Unlike mobiles, landline subscriber lengths are not uniform — they depend on the area code and exchange.

Here is a compact comparison of the two line types in national format:

Attribute	Mobile	Landline
Leading trunk 0	Yes	Yes
Identifier after 0	Mobile prefix (070/080/081/090/091)	Geographic area code (01, 09, 084…)
National length	11 digits (fixed)	Varies by area/exchange
Prevalence	Dominant line type	Less common
Example (national)	0803 xxx xxxx	01 xxx xxxx (Lagos)

The mobile prefix is a three-digit block after the 0 (for example the 803 inside 0803). It behaves like a mobile “network selector” rather than a geographic code — there is no location tied to a mobile number the way a landline area code identifies a city.

For a US business, this means most outbound calls to Nigerian contacts will be to 11-digit mobile numbers. Setting those numbers up correctly is simply a matter of storing them as +234 followed by the 10 digits that remain after removing the leading 0.

Number portability is worth understanding here. In a portability regime, a subscriber can keep the same number when switching carriers, which means the mobile prefix reflects the number’s original allocation rather than the network that serves it today. If you need to know a Nigerian mobile’s current carrier for routing or messaging, rely on a live lookup rather than inferring it from the 080 or 070 prefix.

The practical consequence for a US team is reassuring: you do not need to track which Nigerian carrier a contact uses. You store the full +234 number, and your phone system routes the call correctly regardless of the underlying network. The prefix is part of the number’s identity, not a routing instruction you have to manage.

How to Dial Nigeria from the US

Dialing Nigeria from the United States follows a fixed four-part sequence. Get each part right and the call connects reliably.

1. US exit code — 011. This is the North American international access code. It tells your carrier the call is leaving the country.
2. Nigeria country code — 234. This routes the call to Nigeria.
3. National number without the leading 0. Take the Nigerian number as written nationally and remove its single leading 0.
4. Dial. The full string for a mobile is 011 234 803 xxx xxxx.

The critical step is number 3. A Nigerian mobile written nationally as 0803 123 4567 must have its 0 removed before you dial. The correct US dialing string is 011 234 803 123 4567, not 011 234 0803 123 4567. Leaving the 0 in place is the most frequent reason an international call to Nigeria fails.

Here are worked examples for the two main number types:

Number type	National (in Nigeria)	Dial from US
Mobile	0803 xxx xxxx	011 234 803 xxx xxxx
Lagos landline	01 xxx xxxx	011 234 1 xxx xxxx
Abuja landline	09 xxx xxxx	011 234 9 xxx xxxx
Port Harcourt landline	084 xxx xxx	011 234 84 xxx xxx

Notice the pattern for landlines: Lagos’s 01 becomes 1 after +234, Abuja’s 09 becomes 9, and Port Harcourt’s 084 becomes 84. In every case the leading 0 disappears once the +234 country code is in front.

On a mobile phone you can substitute the + symbol for 011. Storing the number as +234 803 123 4567 lets the phone dial correctly whether you are in the US, in Nigeria, or anywhere else — the handset translates + into the correct local exit code automatically.

For a dedicated, screenshot-level walkthrough including landline and toll-free edge cases, read how to call Nigeria from the US.

How to Dial Within Nigeria

Dialing inside Nigeria is simpler than dialing internationally, because you keep the leading 0 and skip the country code entirely.

To reach any Nigerian number from another Nigerian phone, dial the full national number including the leading 0. For a mobile that means all 11 digits: 0803 123 4567. For a Lagos landline that means the 0, the area code, and the local number: 01 followed by the subscriber digits.

There is no need for +234 or 011 on a domestic call. Those are international constructs. Inside Nigeria the leading 0 does the job that the country code does from abroad — it signals a full national number to the network.

This creates the clean symmetry worth memorizing:

• Inside Nigeria: keep the 0, no country code. Dial 0803 123 4567.
• From abroad: drop the 0, add +234. Dial +234 803 123 4567.

The leading 0 and +234 are two solutions to the same problem — telling the network this is a full national number. You use exactly one of them, never both, and which one depends on whether the call starts inside or outside Nigeria.

Nigeria Emergency Numbers

Emergency short codes in Nigeria are dialed directly, without the country code or the leading 0 trunk prefix. They work only from within Nigeria.

The national emergency number is 112. It is the primary number to reach emergency services and is designed to work as a single, easy-to-remember point of contact.

199 is also used as an emergency number, associated with fire and general emergency response. In Lagos specifically, 767 and 112 reach state emergency services.

Number	Purpose
112	National emergency number
199	Fire / general emergency
767	Lagos state emergency services

For a US business, these numbers are relevant mainly for duty-of-care reasons — if you have traveling staff or a local presence in Nigeria, publish 112 as the primary emergency contact in any local safety documentation. Do not attempt to dial these codes from the US; they are domestic short codes and are not reachable internationally.

Nigeria Toll-Free Number Format

Nigerian toll-free numbers use the 0800 range. Like every other Nigerian number, a toll-free number carries a leading 0 in national format, so it is written as 0800 xxx xxxx.

Toll-free numbers shift the cost of the call from the caller to the number’s owner, which is why businesses and government helplines use them for customer service. In Nigeria, as elsewhere, they are primarily designed for callers dialing from within the country.

That domestic focus matters for a US business. A Nigerian 0800 line is generally intended for inbound calls from Nigerian phones and cannot be relied on as an inbound line for US-based customers. If you want US customers to reach you toll-free, you need a US toll-free number, and if you want Nigerian customers to reach you, you need an internationally reachable Nigerian-facing number.

If you were to reference a Nigerian toll-free number in international form, you would drop the leading 0 and add +234, producing +234 800 xxx xxxx. In practice, though, toll-free ranges are usually only meaningful within their home country’s billing system.

For a US-facing toll-free presence, see how toll-free ranges work in the US on our area codes directory, which covers the 800, 888, 877, and related North American ranges.

Nigerian Phone Number Format for Business

For a US business communicating with Nigerian customers, partners, or staff, three format decisions matter most: how you store numbers, how you present them, and when you place calls.

Store numbers in E.164 international format. That means +234 followed by the national number with the leading 0 removed — for example +234 803 123 4567. This is the format CRMs and business phone systems expect, and it dials correctly no matter where your team member is located.

Present numbers consistently. On a website, in email signatures, and in call scripts, use the international +234 form for anything a global audience will see, and reserve the national 0… form for materials aimed only at people already inside Nigeria. Mixing the two forms in the same document invites the leading-0 mistake.

Mind the time zone. Nigeria observes West Africa Time (WAT), UTC+1, and does not use daylight saving time, so the offset is fixed year-round. Nigeria is several hours ahead of every US time zone, which shapes when you should call.

US time zone	Approx. WAT offset	Practical call window
Eastern (ET)	+5 or +6 hours ahead	Early US morning hits Nigerian afternoon
Central (CT)	+6 or +7 hours ahead	Early US morning hits Nigerian afternoon
Pacific (PT)	+8 or +9 hours ahead	Very early US morning for Nigerian business hours

The offset between WAT and a US zone shifts by an hour depending on whether the US is observing daylight saving time, because Nigeria’s clock stays constant while US clocks move. The practical rule for reaching Nigeria during its business day is to call early in your own US morning.

Because Nigeria does not observe daylight saving time, the direction of the seasonal drift is always the same: when US clocks spring forward, the gap to Nigeria narrows by an hour, and when they fall back, the gap widens by an hour. Build your recurring meeting invites in a calendar tool that stores the true time zone rather than a fixed offset, so the correct WAT time is preserved automatically across the changeover.

A team that regularly calls between the US and Nigeria should agree on a standing “overlap window” — a block of hours that reliably falls within business hours on both sides — and schedule calls inside it. For most US zones that window sits in the early-to-mid US morning, which corresponds to the middle of the Nigerian working day.

A virtual phone system helps here. With a US-based cloud number your team can place and receive calls from anywhere, route inbound calls to whoever is available, and use an AI receptionist to answer and triage calls that arrive outside your working hours — useful when a Nigerian caller reaches you during your night.

Common Nigeria Phone Number Mistakes

A handful of predictable errors account for almost every failed call to Nigeria. Knowing them in advance saves time and avoids the “number not in service” recording.

Keeping the leading 0 after +234. This is by far the most common mistake. +234 0803 123 4567 is wrong. The 0 is the domestic trunk prefix and must be removed once +234 is in front. The correct form is +234 803 123 4567.

Forgetting the exit code from the US. You cannot dial 234 … directly from a US landline. You need the 011 exit code first, producing 011 234 …. On a mobile you can use + instead, but the + or the 011 must be there.

Using the country code for domestic Nigerian calls. Inside Nigeria you do not dial +234. You keep the leading 0 and dial the national number directly. Adding +234 to a domestic call is unnecessary and can misroute it.

Confusing a mobile prefix with an area code. 080 in 0803 is a mobile prefix, not a city area code. A common error is trying to strip only part of it or treating it like a landline code. For mobiles, remove only the single leading 0 and keep the rest intact.

Here is a quick right-versus-wrong reference for a sample mobile number:

Context	Wrong	Right
Storing internationally	+234 0803 123 4567	+234 803 123 4567
Dialing from US	234 803 123 4567	011 234 803 123 4567
Dialing inside Nigeria	+234 803 123 4567	0803 123 4567

The unifying principle behind every one of these mistakes is the relationship between the leading 0 and the +234 country code. Use the 0 for domestic dialing, use +234 for international dialing, and never use both at once.

A useful habit is to clean numbers at the point of entry. When a Nigerian number arrives in national form on a business card, a website, or an email, convert it to +234 immediately and save only that version. Doing the conversion once, at capture time, means every later call, text, and routing rule inherits a correct number and no one has to remember the leading-0 rule under pressure on a live dial.

If you support colleagues or customers who are dialing out of Nigeria to reach your US office, share the reverse recipe too. From Nigeria they dial 009, then 1, then your US 10-digit number. Publishing that string alongside your +234-formatted inbound number removes guesswork on both sides of the call.

Calling Nigeria from the US for Business

If your team regularly calls Nigeria, doing it from personal mobile phones is inefficient and hard to manage. A virtual phone system solves the practical problems: consistent caller ID, shared numbers, call routing, and records that stay with the business rather than an individual’s handset.

With DialPhone’s virtual phone number, you get virtual US phone numbers — both local and toll-free — that your whole team can use from any device. Outbound calls to Nigeria present a consistent US business number, and inbound calls route to whoever is available, wherever they are.

DialPhone stores numbers in international format, so a Nigerian contact saved as +234 803 123 4567 dials correctly whether your rep is at a desk in the US or working remotely. The system handles the exit code and country code translation, which removes the leading-0 mistake from the equation entirely.

Additional features that help teams working across time zones include an AI receptionist that answers and routes calls automatically — valuable when a Nigerian caller reaches you during your off-hours because of the WAT offset. DialPhone also offers free number porting, so you can bring an existing US business number with you.

DialPhone plans start at $24 per user per month. For a team that makes and receives international calls, a single predictable per-seat cost is easier to budget than reimbursing individual international call charges. See the full breakdown on the pricing page.

The workflow is straightforward: pick a US local or toll-free number, add your team, store your Nigerian contacts in +234 format, and let the system handle the international dialing. Your reps simply tap the contact and the call connects.

There is also a records benefit. When calls run through a shared virtual phone system rather than personal cell phones, call history, voicemail, and routing rules stay with the business. If a rep leaves, the Nigerian relationships they managed remain reachable on the company number instead of walking out on a personal handset.

For a small team, the math is usually simple. Instead of reimbursing ad hoc international call charges spread across several personal plans, you carry a single predictable per-seat cost and gain the routing, caller-ID consistency, and record-keeping that individual phones cannot provide.

For the complete step-by-step on the dialing mechanics themselves, the companion guide how to call Nigeria from the US walks through every number type.

Nigeria vs US Phone Format Comparison

The Nigerian and US formats share the same conceptual building blocks — a country code, a location or type identifier, and a subscriber number — but they differ in several practical ways that trip up teams working across both.

Feature	Nigeria	US
Country code	+234	+1
National trunk prefix	0 (kept for domestic dialing)	None
Exit code (dialing out)	009	011
Mobile national length	11 digits (incl. leading 0)	10 digits
Mobile identifier	Prefix: 070, 080, 081, 090, 091	None — mobile and landline share area codes
Landline identifier	Geographic area code (01, 09, 084…)	3-digit area code
Toll-free	0800	800, 888, 877, 866, 855, 844, 833
Emergency	112 (also 199)	911
Written example (national)	0803 123 4567	(415) 555 0123
International form	+234 803 123 4567	+1 415 555 0123

The biggest structural difference is the trunk prefix. Nigeria keeps a leading 0 for domestic dialing and drops it internationally, whereas the US has no trunk prefix at all — a US number is the same 10 digits whether dialed domestically or, with +1 in front, internationally.

The second difference is how mobiles are identified. In Nigeria a mobile is recognizable from its prefix (080, 070, and so on). In the US, mobile and landline numbers share the same area codes, so you cannot tell line type from the number alone.

For a US team, the operational lesson is simple. Your own numbers need no trunk-prefix handling, but every Nigerian number does — drop the 0 when going international. Storing Nigerian contacts in +234 E.164 form bakes that rule in permanently and eliminates the most common source of failed calls.

Related Guides

• How to call Nigeria from the US — step-by-step dialing walkthrough
• DialPhone virtual phone number — US local and toll-free numbers for your team
• Pricing — plans from $24 per user per month
• Area codes directory — how US area codes and toll-free ranges work

Frequently asked questions

What is the Nigeria phone number format? +

Nigeria uses the country code +234. Inside Nigeria, both mobile and landline numbers carry a leading 0 national trunk prefix. Mobile numbers are 11 digits in national format and begin with prefixes such as 070, 080, 081, 090, and 091. Landline numbers combine a geographic area code (also starting with 0) and a local subscriber number. When you dial Nigeria from abroad, you drop that leading 0 and add +234 in front of the remaining digits.

What is the country code for Nigeria? +

Nigeria's country code is +234. You place it after your own country's international access code when dialing from abroad. From the United States that access code is 011, so a full international string is 011 + 234 + the Nigerian national number with the leading 0 removed. When you write a Nigerian number in international E.164 form, it always begins with +234.

How do I call Nigeria from the US? +

Dial 011, then 234, then the Nigerian national number without its leading 0. For a mobile number that starts 0803 xxx xxxx nationally, you dial 011 234 803 xxx xxxx. For a Lagos landline whose area code is 01, you dial 011 234 1 followed by the local subscriber number. The single most common mistake is leaving the leading 0 in place after +234 — always drop it.

How many digits is a Nigerian mobile number? +

A Nigerian mobile number is 11 digits in national format, including the leading 0. The pattern is 0 followed by a three-digit mobile prefix and then the subscriber digits, for example 0803 xxx xxxx. In international format the leading 0 is removed, so the same number becomes +234 803 xxx xxxx, which is 13 digits including the +234 country code.

What are the main Nigeria area codes? +

Major Nigerian landline area codes include Lagos 01, Abuja 09, Ibadan 02, Port Harcourt 084, Kano 064, Kaduna 062, Enugu 042, and Benin City 052. Each carries a leading 0 when dialed inside Nigeria. From abroad you drop that 0, so a Lagos landline dialed from the US uses 011 234 1 before the local number rather than 011 234 01.

What is Nigeria's mobile prefix? +

Nigerian mobile numbers use several three-digit prefixes after the leading 0, including 070, 080, 081, 090, and 091, among others. Because of number portability, a prefix no longer guarantees which carrier currently serves the line. Whatever the prefix, the national number stays 11 digits, and you drop the leading 0 when writing the number in +234 international form.

What is the emergency number in Nigeria? +

112 is Nigeria's national emergency number. 199 is also used, associated with fire and general emergency response. In Lagos, 767 and 112 reach state emergency services. These short codes are dialed directly inside Nigeria and do not use the +234 country code or the leading 0 trunk prefix.

What does a Nigerian toll-free number look like? +

Nigerian toll-free numbers use the 0800 range. Like other Nigerian numbers, they carry a leading 0 in national format. Toll-free numbers are typically intended for callers dialing from within Nigeria, so a US business serving Nigerian customers usually cannot rely on a Nigerian 0800 line for inbound US calls and should instead provide an internationally reachable number.

What time zone is Nigeria in? +

Nigeria observes West Africa Time (WAT), which is UTC+1. Nigeria does not use daylight saving time, so the offset is constant year-round. For a US business, that means Nigeria is several hours ahead of every US time zone, and scheduling calls in the early US morning usually lands during Nigerian business hours.