From Houston to Lagos, London to Enugu, this is how the Nigerian diaspora keeps a parent, a cousin, or a business partner one clear call away.
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Rates updated October 31, 2026
To reach a Nigeria number from the United States, dial these three parts in order.
011 234 802 123 4567
From any mobile, anywhere in the world, you can dial +234 802 123 4567 instead. Press and hold 0 to type the +, and the phone picks the right access code for wherever you are.
Numbers in Nigeria are written locally with a 0 in front, like 0802 123 4567. Calling from abroad you leave that 0 out, so it becomes +234 802 123 4567.
A Nigeria mobile number is 10 digits after +234. If a call does not connect, count the digits first.
Only the first part changes. Your access code replaces the 011, then 234 and the number stay exactly the same.
A ~ means wait for the second dial tone before dialing the rest. It is not a digit you press.
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The heaviest inbound traffic to +234 comes from the Nigerian diaspora in the United States and the United Kingdom, and it is enormous by any measure: Nigeria took in over $25 billion in remittances in 2024, making it Africa's largest remittance recipient - National Population Commission via CrossTech. In the US, roughly 858,000 residents claim Nigerian ancestry and around half a million are Nigerian-born - Nigerian Americans, Wikipedia. Houston, Texas holds the single largest Nigerian community of any US city, followed by dense clusters in Prince George's County, Maryland and the wider Washington DC metro, plus Atlanta (Sandy Springs, Marietta), New York City, Chicago and Los Angeles - Nigerian Americans, Wikipedia. Those hubs generate most of the calls into Lagos, Abuja, Enugu and the towns of the South East and South West.
The United Kingdom is the other giant corridor: about 190,000 Nigerian-born people live in the UK - Nigerian Americans / ONS figures, concentrated in South London (Peckham, Thornton Heath), East London and Manchester. The reasons callers give are specific and recurring: confirming that money sent has landed, checking on aging parents in the hometown, coordinating funerals and burials (a heavy family obligation in Igbo and Yoruba life), school fees, and running a small trading or import business back home. Calls also flow in from Canada (Toronto, Calgary), Ireland, Italy, Germany and the Gulf states where many Nigerians now work.
Dialing out of Nigeria, the local international access code is 009 (you dial 009, then the country code, then the number) - Telephone numbers in Nigeria, Wikipedia. In practice almost nobody in Nigeria dials 009 anymore: people call abroad from a mobile using + (press and hold 0 to get the plus), and increasingly they skip PSTN calls entirely for WhatsApp voice calls, which dominate diaspora contact because they dodge international minute charges on the Nigerian side. When Nigerians do place a real phone call outbound, the destinations mirror the inbound map: the United States, the United Kingdom, Canada and the UAE, to reach relatives, clients and universities. The quirk worth knowing is that a returned call to a strange +234 or foreign missed call is often a Wangiri scam (see the challenges below), so many Nigerians simply will not call an unknown international number back.
Dial your international access code or press + (in the US, 011; from a mobile, hold 0 for +).
Enter Nigeria's country code, 234.
Drop the leading 0 (the trunk prefix) from the Nigerian number.
Dial the remaining digits: for a mobile, the 3-digit prefix plus 7 digits (10 digits after +234).
Full example for a Lagos mobile: +234 803 123 4567.
The trunk-0 drop is the key rule: a mobile written 0803 123 4567 is dialed +234 803 123 4567, never +234 0803 - Telephone numbers in Nigeria, Wikipedia. Mobiles are 11 digits nationally (10 after +234); landlines are shorter with variable 5 to 7 digit local numbers, so a full landline can be noticeably shorter than a mobile - Telephone numbers in Nigeria, Wikipedia. Remember the 2023 fixed-line reform: old Lagos 01 landlines are now 020 1, so a card printed before 2024 may show a dead area code - Telephone numbers in Nigeria, Wikipedia. Avoid returning calls to unknown +234 missed calls (likely Wangiri), and note that 0800 toll-free numbers generally will not connect from abroad.
The single biggest thing between you and a Nigerian number is the NIN-SIM linkage mandate. Every SIM must be tied to a National Identification Number (NIN), and after a long series of extensions the NCC set 14 September 2024 as the final deadline, warning that any line not linked would be blocked from 15 September 2024 - NCC Consumer Portal. Over 153 million SIMs were linked (about a 96% compliance rate), but the churn was real: many people had a line go dead for days, and some replaced numbers entirely - NCC via Connecting Africa. If a Nigerian number that always worked suddenly rings dead or unreachable, a barred-then-reissued SIM is a very likely reason, more so than a bad connection.
Mobile number portability, live since 2013, quietly breaks the old habit of reading the network off the prefix - Telephone numbers in Nigeria, Wikipedia. A 0803 number that everyone assumes is MTN may have been ported to Airtel or Glo years ago, so you cannot infer which network (or which call quality) you are getting from the digits. Combined with a market where MTN and Airtel together hold over 85% of subscribers, Glo around 12% and 9mobile under 2% - Intelpoint, 2025, the practical upshot is that reachability depends on where the person physically is and their network's coverage that day, not on the prefix.
Spam and fraud shape how Nigerians answer their phones, which matters when you are the caller. Unknown numbers are treated with suspicion because of the Wangiri (one ring and cut) scam: a foreign number rings once so you call back a premium line, and the NCC has warned that over 20,000 Nigerians reported telecom fraud tied to it - Legit.ng on NCC warning. Bank-impersonation SMS (fake GTBank, Access, Zenith, UBA alerts about a restricted account or a BVN about to be deactivated) train people to distrust unexpected contact - Techcrier. Two consequences for you: a strange +1 or +44 number may go unanswered on the first try, and no legitimate Nigerian bank will ever phone to ask for an OTP or BVN, so a call claiming to be one is a scam.
One more local reality: reaching a landline is genuinely hard now. Fixed-line penetration is tiny, most homes never had one, and even businesses that print a landline often route callers to a mobile. Government offices, banks and hotels advertise 0700 non-toll-free and 0800 toll-free numbers, but toll-free 0800 lines usually only work when dialed from inside Nigeria, not from abroad - Telephone numbers in Nigeria, Wikipedia. For almost everyone and everything, the mobile number is the number that actually rings.
A Nigerian mobile written in full national form is 11 digits: a leading 0, a three-digit network prefix, and a seven-digit subscriber number, for example 0803 123 4567 - Telephone numbers in Nigeria, Wikipedia. The leading 0 is the trunk prefix: it is only for dialing inside Nigeria. When you call from abroad you replace that 0 with +234, so 0803 123 4567 becomes +234 803 123 4567. This trunk-zero swap is the single most common mistake, and it goes both ways: dialing +234 0803... (keeping the zero) fails, and so does dialing 0803... from abroad with no +234 in front.
Mobile prefixes fall into recognizable families. 080 and 081 are the oldest and most common, 070 came next, and 090 and 091 are newer ranges opened to relieve numbering exhaustion, with the 091 series approved around 2022 for extra capacity - Telephone numbers in Nigeria, Wikipedia. So a friend's number might read 0703, 0806, 0811, 0902 or 0913, all valid mobiles. Because of portability you should not read the network off those digits, but you can trust the shape: 0 + three-digit prefix + seven digits, eleven total.
Special ranges are worth spotting. 0800 is toll-free, 0700 is a non-toll-free personal or corporate number, and both are dialed as full national numbers - Telephone numbers in Nigeria, Wikipedia. If someone hands you a number that starts 0700 or 0800, it is not a mobile you can casually reach from overseas; treat it as a business line that may or may not accept international calls.
Nigeria's landline area codes were quietly overhauled recently, and it trips people up. In 2023 the NCC added a leading 20 to every fixed-line area code, with a grace period during which both the old and new forms worked, ending 1 January 2024 - Telephone numbers in Nigeria, Wikipedia. So Lagos, historically 01, is now written 0201; Ibadan moved from 02 to 0202; and Abuja from 09 to 0209 - Telephone numbers in Nigeria, Wikipedia. If you find an old contact card with a Lagos landline as 01-xxxxxxx, that format is dead and you may need the 020 version.
Beyond the big three, the geographic codes still map to real cities and telecom zones - NCC Area Codes by Zone. Notable ones include Port Harcourt 084, Kano 064, Kaduna 062, Enugu 042, Aba 082, Benin City 053, Warri 052, Calabar 087, Jos 073, Ilorin 031 and Maiduguri 076. When you dial these from abroad, you drop the leading 0 and prefix +234: a Port Harcourt landline 084 123 456 becomes +234 84 123 456.
Honestly, though, you will rarely need any of this. Fixed-line service in Nigeria is thin, local numbers run a variable five to seven digits so lengths differ between cities - Telephone numbers in Nigeria, Wikipedia, and most families, traders and even offices simply prefer their mobile. Keep the area codes for the occasional bank branch, hotel or government desk; for a person, ask for their 080/081/070/090 mobile.
Nigerian institutions publish a mix of numbers, and knowing which actually rings saves frustration. Banks like GTBank, Access, Zenith, First Bank and UBA advertise both a short customer-care line and a longer contact center number, often on a 0700 corporate range, and these are built for callers inside Nigeria - Techcrier on bank contacts. From abroad, the more reliable move is the bank's mobile-friendly WhatsApp line or a direct mobile for a specific branch officer, since toll-free and 0700 lines are inconsistent internationally.
Government and consumer services do have real hotlines. The NCC consumer complaint line is 622, free to call inside Nigeria, for telecom disputes, and 2442 is the shortcode you text STOP to for the Do Not Disturb (DND) service that strips marketing SMS from your line - Termii on Nigeria DND. The national emergency number is 112, with 767 additionally used in Lagos State - Telephone numbers in Nigeria, Wikipedia. These short codes are for people physically in Nigeria; from overseas you cannot dial 112 or 622 to reach Nigerian services.
The recurring pattern is that a mobile number is the real switchboard of Nigerian business. Market traders, contractors, guesthouses and even clinics run on a personal or business mobile, and a call placed there in working hours (8 am to 6 pm WAT) will nearly always beat a landline or a toll-free tree. When someone gives you an office landline and a mobile, save both but call the mobile first.
Nigeria runs on a single clock, West Africa Time (WAT, UTC+1), with no daylight saving anywhere in the country year round - Time in Nigeria, Wikipedia. Because the US shifts its clocks and Nigeria never does, the gap flexes slightly by season, but in practice Lagos is about 5 hours ahead of US Eastern and 8 ahead of US Pacific. That makes early US mornings the sweet spot: 8 am in New York is 1 pm in Lagos (2 pm in US winter), right in the working day, and 9 am in Los Angeles is 5 pm in Abuja (6 pm in US winter), still catchable as the working day ends.
Sundays are heavily church days across much of the country, especially in the Christian South, so a mid-morning Sunday call may miss someone at service; late Sunday afternoon or evening is safer for family catch-ups. For the Muslim-majority North, Friday midday prayers similarly move people away from the phone. Weekday evenings, 7 to 9 pm WAT, are prime family time and a warm window for a long call home.
The cultural fact that shapes everything is WhatsApp. It is the default channel for Nigerian family and business contact, and many people expect a WhatsApp message or call before a regular phone call. That is exactly why a direct browser-to-phone call is powerful when it counts: it rings the actual number, works even when the person has no data or a weak WhatsApp connection, and needs nothing installed on their side. For an elderly parent who does not use WhatsApp, a stranded relative with no data, or a business that only answers a real phone line, dialing the number directly is the thing that gets through.
Reachability is not uniform across the country, and it helps to know where you are calling. In Lagos, Abuja and Port Harcourt, network density is high and calls connect quickly on MTN and Airtel, which together dominate the market - Intelpoint, 2025. In these cities a dropped call is usually about the person's device or battery, not the network.
In the South East (Enugu, Owerri, Aba, Onitsha) and rural South West and Middle Belt towns, coverage is good in built-up areas but patchier off the main roads, and you may hit a call that connects then breaks up. Power is the hidden variable: grid electricity is unreliable nationwide, so if a base station or the person's phone is between generator refuels, a call can fail for reasons that have nothing to do with the number being wrong. Trying again in an hour often just works.
Across the North East and parts of the North West, security-driven telecom shutdowns have periodically taken networks offline in specific states, and coverage thins in remote areas. If a number in these regions is unreachable for an extended stretch, it can be an area-wide outage rather than a personal one. In all these cases the practical advice is the same: the number is almost always fine, so if a first attempt fails, wait and redial rather than assuming you have the wrong digits.
Because Nigeria added a leading 20 to every fixed-line area code in 2023, with both formats accepted only until 1 January 2024. A Lagos landline that used to be 01-xxxxxxx is now 020 1-xxxxxxx, so a pre-2024 contact card can show a dead code - Telephone numbers in Nigeria, Wikipedia.
A mobile is 11 digits and starts 070, 080, 081, 090 or 091 after the 0. A landline is shorter: a 2 to 3 digit area code (like Lagos 01, now 020, or Kano 064) plus a 5 to 7 digit local number - Telephone numbers in Nigeria, Wikipedia. In everyday life, almost everyone you want to reach uses a mobile.
Not reliably. Since mobile number portability launched in 2013, people keep their number when they switch networks, so a 0803 that was originally MTN may now be on Airtel or Glo - Telephone numbers in Nigeria, Wikipedia. The prefix tells you the number is a valid mobile, not who carries it today.
The most common cause right now is the NIN-SIM linkage rule: lines not tied to a National Identification Number by the 14 September 2024 deadline were blocked, and some people got new numbers as a result - NCC Consumer Portal. Power outages and regional network issues also cause temporary unreachability, so try again in an hour before assuming the number changed.
Be cautious. Nigeria has been a hotspot for the Wangiri (one ring and drop) scam, where a number rings once so you call back a premium line; the NCC logged complaints from over 20,000 people - Legit.ng on NCC warning. If you were not expecting the call, do not return it blindly.
Nigeria is on WAT (UTC+1) with no daylight saving, roughly 5 hours ahead of US Eastern. Early US mornings are ideal: 8 am in New York is 1 pm in Lagos, and 9 am in Los Angeles is 5 pm in Abuja (2 pm and 6 pm in US winter) - Time in Nigeria, Wikipedia. Weekday evenings around 7 to 9 pm WAT are warm family windows; avoid Sunday morning church hours.
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