business phone · 7 min read
How to Call Nigeria from the US
How to call Nigeria from the US: dial 011 + 234 + number (drop leading 0). Covers Lagos area codes, MTN/Airtel prefixes, WAT time zone, costs, and STIR/SHAKEN tips.
To call Nigeria from the US, dial 011 + 234 + Nigerian number without the leading 0.
Example — Lagos mobile: 011-234-803-456-7890 (domestic: 0803-456-7890).
Example — Lagos landline: 011-234-1-234-5678 (domestic: 01-234-5678).
The 011 is the US exit code. 234 is Nigeria’s country code. Dropping the leading 0 is the single most common mistake that prevents calls from connecting.
How to dial Nigeria from the US
Follow these four steps from any US phone:
- Dial 011 — the US international exit code. Every call leaving the US starts here. On a US mobile you can substitute
+(long-press 0 on the keypad) and skip dialing 011 explicitly. - Dial 234 — Nigeria’s ITU country code.
- Drop the leading 0 from the Nigerian number. Nigerians write numbers with a domestic trunk prefix of 0 — that 0 is only for use inside Nigeria.
- Dial the area code (or mobile prefix) and local number, then press call.
Full pattern: 011 234 <Nigerian number minus leading 0>.
On a US mobile that supports E.164, +234 803 456 7890 works identically and is the format to save in contacts — it will work when you roam internationally too.
Nigerian area codes by major city and mobile prefixes
Landline area codes
Nigerian landline infrastructure is limited compared to mobile, but the major cities each have an assigned NCC area code:
| City | Area code | Example from US |
|---|---|---|
| Lagos / Ikeja | 1 | 011-234-1-XXX-XXXX |
| Abuja (FCT) | 9 | 011-234-9-XXX-XXXX |
| Ibadan | 2 | 011-234-2-XXX-XXXX |
| Port Harcourt | 84 | 011-234-84-XXX-XXXX |
| Kano | 64 | 011-234-64-XXX-XXXX |
| Kaduna | 62 | 011-234-62-XXX-XXXX |
| Benin City | 52 | 011-234-52-XXX-XXXX |
| Enugu | 42 | 011-234-42-XXX-XXXX |
Drop the leading 0 from the domestic area code before dialing. Lagos written as 01-XXX-XXXX → dial 1-XXX-XXXX after 011 234.
Mobile prefixes by carrier
Nigerian mobile numbers are 11 digits domestically (leading 0 + 10 digits). Strip the 0; the remaining 10 digits follow 011 234.
| Carrier | Prefixes (after dropping 0) |
|---|---|
| MTN | 803, 806, 810, 813, 814, 816, 903, 906 |
| Airtel | 701, 708, 802, 808, 812, 901, 902, 904, 907 |
| Glo | 705, 805, 807, 811, 815, 905 |
| 9mobile | 809, 817, 818, 908, 909 |
The carrier prefix does not change how you dial — the format is the same regardless of whether the recipient is on MTN or 9mobile.
How Nigerian numbering works
Nigeria’s telephone numbering is administered by the Nigerian Communications Commission (NCC), the country’s independent telecom regulator.
The NCC allocates number blocks to operators and enforces the national numbering plan.
All Nigerian subscriber numbers follow a uniform 11-digit national format: one trunk-prefix digit (0) plus 10 subscriber digits.
For landlines, the 10 digits are: area code (1–2 digits) + local number (7–8 digits). For mobiles, the 10 digits are: operator prefix (3 digits) + subscriber number (7 digits). Nigeria is a mobile-dominant market — the vast majority of business and personal calls go to mobile numbers.
Time zone — WAT (UTC+1)
Nigeria observes West Africa Time (WAT), which is UTC+1. Nigeria does not observe daylight saving time, so the offset is constant year-round.
| US time zone | Offset from WAT |
|---|---|
| Eastern Standard (EST, UTC−5) | WAT is 6 hours ahead |
| Eastern Daylight (EDT, UTC−4) | WAT is 5 hours ahead |
| Central (CST/CDT) | WAT is 7–6 hours ahead |
| Pacific (PST/PDT) | WAT is 9–8 hours ahead |
A practical calling window for US-to-Nigeria business calls: 8–11 AM US Eastern puts you at 1–4 PM WAT — within normal Nigerian business hours without an unreasonably early US start.
Avoid calling after 5 PM WAT (11 AM–12 PM ET) for business; Nigerian offices typically close by 5–6 PM local.
US to Nigeria calling costs
Nigerian call rates are higher than Western Europe because of longer call-routing paths and lower carrier competition on the route.
Major US carrier (no international plan): $1.50–$3.50 per minute. AT&T and Verizon publish exact rates; T-Mobile’s add-on plans reduce this significantly.
Carrier international add-on: $0.10–$0.25 per minute in most packages. Cost-effective if your team makes 30+ minutes of Nigeria calls per month.
VoIP (business phone system): $0.01–$0.05 per minute via SIP trunking. DialPhone business phone routes international calls over private IP networks at wholesale rates — far below carrier add-on pricing for teams with regular Nigeria call volume. See DialPhone pricing for current Nigeria per-minute rates.
WhatsApp / data apps: Free over Wi-Fi or mobile data. Nigeria has one of the highest WhatsApp penetration rates in Africa. For personal calls or informal business contact, WhatsApp is widely accepted. For calls requiring a recorded, verified business number, VoIP is the standard.
Calling Nigerian mobile vs landline — and WhatsApp dominance
The dialing format for Nigerian mobiles and landlines is identical from the US: 011 234 <number minus leading 0>. The distinction matters only for recognizing the number type.
Landline identifiers: Nigerian landlines start with area code digits like 01 (Lagos), 09 (Abuja), 084 (Port Harcourt). After stripping the 0, they present as 1, 9, or 84.
Mobile identifiers: Nigerian mobiles always begin with a carrier prefix in the 0700–0909 range domestically. After stripping the 0, you’ll dial a 3-digit prefix (7xx, 8xx, or 9xx) followed by 7 digits.
WhatsApp usage in Nigeria is ubiquitous. If you have a contact’s WhatsApp, a free Wi-Fi call is often preferable for informal conversations. For verified business calls — contracts, compliance calls, recorded support lines — use a VoIP number with full caller ID and call logging.
SMS to Nigeria, business context, and 419 scam awareness
SMS: Standard SMS from US carriers reaches Nigerian mobiles, though delivery rates and latency vary by carrier interconnect. VoIP SMS through a platform like DialPhone provides delivery receipts and supports A2P (application-to-person) sending for business use cases.
Business context: Nigeria is Africa’s largest economy and a major tech hub. Lagos is frequently called “Silicon Lagoon” — home to unicorns like Flutterwave and Paystack, a large offshore software development sector, and significant US-Nigeria remittance flows. Legitimate US-Nigeria business calling spans fintech partnerships, offshore development teams, manufacturing supply chains, and oil-sector logistics.
419 scam awareness: The “Nigerian prince” advance-fee scam (named after Section 419 of Nigeria’s Criminal Code) is globally notorious, and US carrier spam-filtering systems flag calls to Nigerian numbers at elevated rates as a result. This is a real operational concern for US businesses with Nigerian partners or clients.
STIR/SHAKEN A-attestation addresses this directly. When a VoIP provider authenticates your outbound call at the A level — meaning the provider has verified the calling number belongs to the originating account — the receiving network sees a signed certificate confirming the call is legitimate.
DialPhone applies STIR/SHAKEN A-attestation on eligible outbound routes, including US-to-Nigeria calls, reducing the probability that your business call is labeled “Spam Likely” before it even rings. For US companies making regular calls to Nigerian business partners, this is not a minor detail — it is the difference between calls being answered and calls being silently rejected. See our STIR/SHAKEN glossary entry for full technical background.
For businesses needing to port or provision a Nigerian virtual number for inbound calls, see the number porting guide.
FAQ
Calling Nigeria FAQ
What is the country code for Nigeria?
Nigeria's country code is +234, assigned by the ITU. From a US landline or mobile, prefix every Nigerian number with 011 234 (or +234 from a mobile). Drop the leading 0 that Nigerians use domestically before dialing the area code or mobile prefix.
How do I call a Lagos number from the US?
Lagos landlines use area code 1. A Lagos number written domestically as 01-234-5678 becomes 011-234-1-234-5678 from the US.
On a US mobile you can also dial +234-1-234-5678. The leading 0 is the Nigerian trunk prefix and must be dropped when dialing internationally.
How do I call a Nigerian mobile from the US?
Nigerian mobiles are 11 digits domestically (0 + 10-digit number). Drop the leading 0 and prefix with 011 234. Example: 0803-456-7890 becomes 011-234-803-456-7890.
The carrier prefix (803, 806, 802, etc.) stays in full — it is not an area code but an operator identifier assigned by the NCC.
What time zone is Nigeria in?
Nigeria observes West Africa Time (WAT), which is UTC+1 year-round. Nigeria does not use daylight saving time.
WAT is 5 hours ahead of US Eastern Standard Time (EST) and 6 hours ahead of Eastern Daylight Time (EDT). It is 8–9 hours ahead of US Pacific Time. A good calling window is 8–11 AM US Eastern, which lands 1–4 PM in Nigeria.
Why does my call to Nigeria say 'Spam Likely'?
Nigeria has long been associated with advance-fee (419) scams, so US carriers aggressively label outbound calls to Nigerian numbers. Calls placed through a VoIP provider that achieves STIR/SHAKEN A-level attestation carry a verified caller ID that tells the receiving network the call originated from an authenticated source.
DialPhone routes US-to-Nigeria calls with A-attestation where supported, significantly reducing the chance your legitimate business call is filtered as spam.
What is the cheapest way to call Nigeria from the US?
Major US carriers (AT&T, Verizon, T-Mobile) charge $1.50–$3.50 per minute to Nigeria without an international plan. Carrier international add-ons reduce this to $0.10–$0.25 per minute.
VoIP providers typically charge $0.01–$0.05 per minute. For teams making regular US-Nigeria calls, a VoIP plan like DialPhone pays for itself quickly. WhatsApp and FaceTime Audio are free over data but depend on both parties having internet.
Can I call Nigerian freephone numbers from the US?
Nigerian freephone numbers (prefix 0800) are toll-free only within Nigeria. Calling them from the US will either fail to connect or connect at a standard international rate with no toll-free benefit. Use the company's geographic or mobile number instead when calling from abroad.
What are the main Nigerian mobile carriers and their prefixes?
Nigeria has four major mobile operators regulated by the NCC. MTN prefixes (after dropping the leading 0): 803, 806, 810, 813, 814, 816, 903, 906. Airtel: 701, 708, 802, 808, 812, 901, 902. Glo: 705, 805, 807, 811, 815. 9mobile: 809, 817, 818, 908, 909.
The prefix does not affect how you dial from the US — all follow the same 011-234-prefix-XXXXXXX format.
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About the author
Growth Operations Lead at DialPhone
Darshan leads Growth Operations at DialPhone, where he owns three interconnected programs: the comparison content operation, the open VoIP Pricing Dataset, and the test-call methodology used to verify every pricing claim published on the site.
His research process starts with hands-on product trials and live vendor quotes — not marketing pages. Pricing figures are cross-checked against actual invoices and re-verified on a rolling quarterly cycle, with the underlying dataset kept public for independent re-verification. That dataset now covers 40+ VoIP and virtual-number providers across the US and Canada market.
Darshan also leads DialPhone's AI receptionist evaluation program, running structured test-call scenarios across English, Spanish, and French to assess transcription accuracy, intent routing, and escalation behavior. Methodology notes and raw scoring are archived in the research section.
For factual corrections or dataset discrepancies, Darshan can be reached at the DialPhone editorial address. Verified corrections are published as errata with a changelog date — no silent edits.