NumberResearchRecent prefix assignments
352 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04
Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.
Most active assignees, last 30 days
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 781-399 | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | MALDEN | MA | |
| 781-400 | COMCAST IP PHONE, LLC | 318J | NEEDHAM | MA | |
| 781-401 | VERIZON NEW ENGLAND INC. | 9102 | CANTON | MA | |
| 781-402 | VERIZON NEW ENGLAND INC. | 9102 | LEXINGTON | MA | |
| 781-404 | PAETEC ITEL, LLC | 829J | WOBURN | MA | |
| 781-405 | METROPCS, INC. | 5562 | WOBURN | MA | |
| 781-406 | TC SYSTEMS, INC. | 7135 | LYNNFIELD | MA | |
| 781-407 | VERIZON NEW ENGLAND INC. | 9102 | DEDHAM | MA | |
| 781-409 | VERIZON NEW ENGLAND INC. | 9102 | WALTHAM | MA | |
| 781-410 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DEDHAM | MA | |
| 781-411 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | MA | |
| 781-412 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SCITUATE | MA | |
| 781-415 | NORFOLK COUNTY INTERNET, INC. | 6083 | CANTON | MA | |
| 781-416 | VERIZON NEW ENGLAND INC. | 9102 | WELLESLEY | MA | |
| 781-417 | TC SYSTEMS, INC. | 7135 | SAUGUS | MA | |
| 781-418 | PAETEC ITEL, LLC | 829J | BURLINGTON | MA | |
| 781-419 | PAETEC ITEL, LLC | 829J | WALTHAM | MA | |
| 781-421 | IP HORIZON LLC | 515J | ROCKLAND | MA | |
| 781-422 | VERIZON NEW ENGLAND INC. | 9102 | KINGSTON | MA | |
| 781-423 | TC SYSTEMS, INC. | 7135 | ROCKLAND | MA | |
| 781-424 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | NORWELL | MA | |
| 781-425 | PAETEC ITEL, LLC | 829J | BURLINGTON | MA | |
| 781-426 | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | REVERE | MA | |
| 781-428 | RCN TELECOM SERVICES, INC. - MA | 7619 | BRAINTREE | MA | |
| 781-429 | TC SYSTEMS, INC. | 7135 | NEEDHAM | MA | |
| 781-430 | TC SYSTEMS, INC. | 7135 | LEXINGTON | MA | |
| 781-431 | VERIZON NEW ENGLAND INC. | 9102 | WELLESLEY | MA | |
| 781-432 | NORFOLK COUNTY INTERNET, INC. | 6083 | MELROSE | MA | |
| 781-433 | VERIZON NEW ENGLAND INC. | 9102 | NEEDHAM | MA | |
| 781-434 | TC SYSTEMS, INC. | 7135 | WALTHAM | MA | |
| 781-435 | COMCAST IP PHONE, LLC | 318J | STONEHAM | MA | |
| 781-436 | BANDWIDTH.COM CLEC, LLC - MA | 990E | STOUGHTON | MA | |
| 781-437 | PAETEC ITEL, LLC | 829J | RANDOLPH | MA | |
| 781-438 | VERIZON NEW ENGLAND INC. | 9102 | STONEHAM | MA | |
| 781-439 | PAETEC ITEL, LLC | 829J | READING | MA | |
| 781-440 | VERIZON NEW ENGLAND INC. | 9102 | NORWOOD | MA | |
| 781-441 | VERIZON NEW ENGLAND INC. | 9102 | DEDHAM | MA | |
| 781-442 | VERIZON NEW ENGLAND INC. | 9102 | BURLINGTON | MA | |
| 781-443 | TC SYSTEMS, INC. | 7135 | ARLINGTON | MA | |
| 781-444 | VERIZON NEW ENGLAND INC. | 9102 | NEEDHAM | MA | |
| 781-446 | VERIZON NEW ENGLAND INC. | 9102 | WELLESLEY | MA | |
| 781-447 | VERIZON NEW ENGLAND INC. | 9102 | WHITMAN | MA | |
| 781-448 | RCN TELECOM SERVICES, INC. - MA | 7619 | ROCKLAND | MA | |
| 781-449 | VERIZON NEW ENGLAND INC. | 9102 | NEEDHAM | MA | |
| 781-451 | TC SYSTEMS, INC. | 7135 | WAKEFIELD | MA | |
| 781-452 | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | DUXBURY | MA | |
| 781-453 | VERIZON NEW ENGLAND INC. | 9102 | NEEDHAM | MA | |
| 781-454 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | STONEHAM | MA | |
| 781-455 | VERIZON NEW ENGLAND INC. | 9102 | NEEDHAM | MA | |
| 781-456 | BANDWIDTH.COM CLEC, LLC - MA | 990E | LEXINGTON | MA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.