SIP Trunking
Country Code Nigeria: How to Dial From the U.S.
This guide provides helpful tips for calling Nigeria from the U.S. Learn how to make calls to Nigeria with confidence.
Nigeria is Africa's largest economy and most populous nation, with over 220 million people and a telecom sector serving 160+ million mobile subscribers. Whether you're closing a deal in Lagos, checking in with family in Abuja, or coordinating with a development team in Port Harcourt, knowing the country code Nigeria format saves you time and money.
What is the country code for Nigeria?
The country code for Nigeria is +234. Every call from the U.S. to a Nigerian phone number — mobile or landline — starts with this code after the U.S. exit code.
How to call Nigeria from the U.S.: step by step
1. Dial the U.S. exit code (011 or +)
Every international call from the U.S. starts with 011 (from a landline) or + (from a mobile phone). This tells your carrier you're dialing internationally.
2. Enter the country code Nigeria: 234
After the exit code, dial 234 — Nigeria's internationally assigned country code.
3. Dial the local number
This step depends on whether you're calling a mobile phone or a landline:
Mobile numbers start with 7, 8, or 9 and are 10 digits long (including the leading 0, which you drop for international calls). Example:
- Nigerian mobile: 0803 123 4567
- From the U.S.: 011-234-803-123-4567
Landline numbers include a 1–2 digit area code followed by a 7-digit local number. Example:
- Lagos landline: (01) 234 5678
- From the U.S.: 011-234-1-234-5678
| Call type | Format from U.S. | Example |
|---|---|---|
| Mobile | 011 + 234 + 10-digit number (drop leading 0) | 011-234-8031234567 |
| Lagos landline | 011 + 234 + 1 + 7-digit number | 011-234-1-2345678 |
| Abuja landline | 011 + 234 + 9 + 7-digit number | 011-234-9-2345678 |
| Port Harcourt landline | 011 + 234 + 84 + 6-digit number | 011-234-84-234567 |
Nigerian area codes: major cities
| City | Area code | Full dial from U.S. |
|---|---|---|
| Lagos | 1 | 011-234-1-XXXXXXX |
| Abuja | 9 | 011-234-9-XXXXXXX |
| Port Harcourt | 84 | 011-234-84-XXXXXX |
| Kano | 64 | 011-234-64-XXXXXX |
| Ibadan | 2 | 011-234-2-XXXXXXX |
| Benin City | 52 | 011-234-52-XXXXXX |
| Enugu | 42 | 011-234-42-XXXXXX |
Time zone differences: U.S. vs. Nigeria
Nigeria operates on West Africa Time (WAT), GMT+1 year-round — no daylight saving time changes.
| U.S. time zone | Offset from Nigeria | When it's 9 AM in Nigeria |
|---|---|---|
| Eastern (EST/EDT) | -6h (winter) / -5h (summer) | 3:00 AM / 4:00 AM ET |
| Central (CST/CDT) | -7h / -6h | 2:00 AM / 3:00 AM CT |
| Mountain (MST/MDT) | -8h / -7h | 1:00 AM / 2:00 AM MT |
| Pacific (PST/PDT) | -9h / -8h | 12:00 AM / 1:00 AM PT |
Best calling window: 8:00–11:00 AM ET lines up with 2:00–5:00 PM in Nigeria — ideal for business and personal calls.
Tips for successful calls to Nigeria
Check your connection quality. International calls travel through multiple network hops. A SIP trunking provider with a private IP network minimizes latency and jitter. Telnyx's Voice API documentation covers how to programmatically manage call quality.
"We often obsess over LLM inference speeds, but in Voice AI, the network is often the silent killer." — Ian Reither, Telnyx
Know the business culture. Nigerian professionals value formal greetings — use titles (Chief, Dr., Mr., Mrs.) until invited to do otherwise. English is the official language, though Nigerian Pidgin is widely spoken socially.
Have a backup plan for dropped calls. Network congestion in Nigeria can cause occasional drops during peak hours (10 AM–2 PM WAT). Check Telnyx's support guide on call troubleshooting if you experience persistent quality issues.
Consider a local Nigerian number. Getting a Nigerian virtual phone number lets your contacts dial a local number instead of paying international rates.
How much does it cost to call Nigeria?
Rates vary dramatically by method:
| Method | Typical rate per minute | Notes |
|---|---|---|
| Major U.S. carrier (AT&T, Verizon) | $0.25–$3.00/min | Pay-per-use rates are highest |
| Calling card | $0.02–$0.10/min | Watch for hidden fees |
| VoIP / SIP trunking | $0.01–$0.05/min | Best rates for businesses |
| WhatsApp / data call | Free (data only) | Requires internet on both ends |
Call Nigeria for less with Telnyx
Telnyx makes international calling to Nigeria simple and affordable. Our global private IP network routes calls across dedicated infrastructure — not the public internet — for carrier-grade voice quality at VoIP prices.
- Elastic SIP trunking with per-second billing — no minimums, no contracts
- Phone numbers in 140+ countries, including Nigeria
- Competitive rates starting at fractions of a cent per minute
- 24/7 support from real engineers, not chatbots
Talk to an expert about your international calling needs, or sign up and start calling Nigeria in minutes.
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