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
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 781-457 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LEXINGTON | MA | |
| 781-458 | BANDWIDTH.COM CLEC, LLC - MA | 990E | LEXINGTON | MA | |
| 781-459 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DEDHAM | MA | |
| 781-461 | VERIZON NEW ENGLAND INC. | 9102 | DEDHAM | MA | |
| 781-462 | TC SYSTEMS, INC. | 7135 | MELROSE | MA | |
| 781-463 | PAETEC ITEL, LLC | 829J | LYNNFIELD | MA | |
| 781-464 | TC SYSTEMS, INC. | 7135 | WALTHAM | MA | |
| 781-465 | PAETEC ITEL, LLC | 829J | NEEDHAM | MA | |
| 781-466 | VERIZON NEW ENGLAND INC. | 9102 | WALTHAM | MA | |
| 781-467 | VERIZON NEW ENGLAND INC. | 9102 | DEDHAM | MA | |
| 781-471 | TC SYSTEMS, INC. | 7135 | DEDHAM | MA | |
| 781-472 | TC SYSTEMS, INC. | 7135 | WALTHAM | MA | |
| 781-473 | VERIZON NEW ENGLAND INC. | 9102 | RANDOLPH | MA | |
| 781-474 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | NEEDHAM | MA | |
| 781-476 | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | MARBLEHEAD | MA | |
| 781-477 | VERIZON NEW ENGLAND INC. | 9102 | LYNN | MA | |
| 781-478 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WALTHAM | MA | |
| 781-479 | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | LYNN | MA | |
| 781-480 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MALDEN | MA | |
| 781-481 | VERIZON NEW ENGLAND INC. | 9102 | STONEHAM | MA | |
| 781-482 | TC SYSTEMS, INC. | 7135 | LEXINGTON | MA | |
| 781-483 | VERIZON NEW ENGLAND INC. | 9102 | ARLINGTON | MA | |
| 781-485 | VERIZON NEW ENGLAND INC. | 9102 | REVERE | MA | |
| 781-487 | VERIZON NEW ENGLAND INC. | 9102 | WALTHAM | MA | |
| 781-488 | VERIZON NEW ENGLAND INC. | 9102 | ARLINGTON | MA | |
| 781-489 | PAETEC ITEL, LLC | 829J | WELLESLEY | MA | |
| 781-491 | RCN TELECOM SERVICES, INC. - MA | 7619 | WOBURN | MA | |
| 781-492 | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | DEDHAM | MA | |
| 781-493 | PAETEC ITEL, LLC | 829J | DEDHAM | MA | |
| 781-494 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BURLINGTON | MA | |
| 781-495 | VERIZON NEW ENGLAND INC. | 9102 | NEEDHAM | MA | |
| 781-496 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WOBURN | MA | |
| 781-497 | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | WOBURN | MA | |
| 781-498 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MEDFORD | MA | |
| 781-499 | TC SYSTEMS, INC. | 7135 | HANOVER | MA | |
| 781-501 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NORWOOD | MA | |
| 781-502 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MALDEN | MA | |
| 781-503 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WOBURN | MA | |
| 781-505 | VERIZON NEW ENGLAND INC. | 9102 | BURLINGTON | MA | |
| 781-506 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RANDOLPH | MA | |
| 781-507 | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | STONEHAM | MA | |
| 781-509 | VERIZON NEW ENGLAND INC. | 9102 | READING | MA | |
| 781-511 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | MA | |
| 781-512 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LINCOLN | MA | |
| 781-515 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LEXINGTON | MA | |
| 781-516 | BANDWIDTH.COM CLEC, LLC - MA | 990E | WALTHAM | MA | |
| 781-517 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MELROSE | MA | |
| 781-519 | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | BRAINTREE | MA | |
| 781-522 | VERIZON NEW ENGLAND INC. | 9102 | WALTHAM | MA | |
| 781-523 | COMCAST IP PHONE, LLC | 318J | WHITMAN | 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.