Area codes · +1
Area code 771
Area code 771 covers Washington, DC. We hold 770 allocated blocks for it across 1 rate centre, split 27% mobile, 27% landline and 46% VoIP.
The other area codes laid over 771
Area code 771 does not have Washington, DC to itself. 1 other code — 202 — serves the same rate centres, laid over the same ground rather than dividing it. That is an overlay: a new code added when the old one ran out of numbers, covering the same streets. Two neighbours can hold different area codes, so the code says roughly when a number was issued rather than where it sits.
2025,212 blocks, 1 rate centre, mostly mobile
Each holds its own blocks and its own carrier mix, so a 771 number and a 202 number from the same street can report different line types. Filtering Washington, DC by area code needs all 2 of them.
District of Columbia is split across 2 area codes — 202, 771. By allocated blocks 771 is the second largest of them, holding 13% of the District of Columbia total.
Where 771 numbers are concentrated
Rate-centre names are reproduced as NANPA records them. The agency truncates them to ten characters, so longer names appear shortened elsewhere on this site.
| Rate centre | Blocks | Share of 771 |
|---|---|---|
| Washington | 770 | 100% |
Carriers holding the most 771 blocks
Onvoy220 blocks
Mcimetro Access Transmission Services Llc100 blocks
Teleport Communications America, Llc88 blocks
Bandwidth81 blocks
AT&T Wireless67 blocks
Verizon Wireless62 blocks
The largest holder, Onvoy, has 29% of the code.
These are original allocations. A number keeps its digits and its block when its subscriber moves network, so a ported 771 number still reports the carrier it started with. Closing that gap needs a live query against the routing database. How line type is derived.
Check a single 771 number, or run a whole list through the free cleaner — neither uploads anything.
Common questions
Where is area code 771?
Area code 771 covers Washington, DC. It is not the only code there: 202 is an overlay on the same rate centres, so a Washington, DC number can start with any of them.
Is a 771 number a mobile or a landline?
It can be either, and the digits do not say which. North American mobile and landline numbers share the same ranges, so the answer comes from the carrier holding the block. In 771 the split runs 27% mobile, 27% landline and 46% VoIP, so VoIP is the most likely single answer.
Which carriers hold 771 numbers?
The largest holders are Onvoy, Mcimetro Access Transmission Services Llc, Teleport Communications America, Llc. That is the carrier the block was allocated to, which is not necessarily the network a given number sits on today.
How many 771 numbers are there?
The code holds 770 allocated blocks in our copy of the numbering plan. A block is 1,000 or 10,000 consecutive numbers depending on how deeply it has been pooled, so 771 covers on the order of 770,000 possible numbers — most of which have never been issued to anyone.