NumberResearchRecent prefix assignments
369 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
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Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2001-05-10 | 213-531 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 10 | CA |
| 2001-05-10 | 213-640 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 10 | CA |
| 2001-05-10 | 228-244 | PAETEC ITEL, LLC | 829J | OCEAN SPG | MS |
| 2001-05-10 | 262-359 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | KENOSHA | WI |
| 2001-05-10 | 323-331 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 02 | CA |
| 2001-05-10 | 323-338 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 02 | CA |
| 2001-05-10 | 323-404 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 03 | CA |
| 2001-05-10 | 323-405 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 04 | CA |
| 2001-05-10 | 323-406 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 05 | CA |
| 2001-05-10 | 323-474 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 03 | CA |
| 2001-05-10 | 323-475 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 05 | CA |
| 2001-05-10 | 323-476 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 06 | CA |
| 2001-05-10 | 323-490 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MONTEBELLO | CA |
| 2001-05-10 | 323-513 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 06 | CA |
| 2001-05-10 | 323-524 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 08 | CA |
| 2001-05-10 | 323-527 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 09 | CA |
| 2001-05-10 | 323-529 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 11 | CA |
| 2001-05-10 | 323-601 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 12 | CA |
| 2001-05-10 | 323-602 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 13 | CA |
| 2001-05-10 | 323-603 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 14 | CA |
| 2001-05-10 | 323-641 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 11 | CA |
| 2001-05-10 | 323-642 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 12 | CA |
| 2001-05-10 | 323-801 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 13 | CA |
| 2001-05-10 | 323-802 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LSAN DA 14 | CA |
| 2001-05-10 | 323-803 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MONTEBELLO | CA |
| 2001-05-10 | 339-222 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | WALTHAM | MA |
| 2001-05-10 | 339-364 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | SHARON | MA |
| 2001-05-10 | 339-987 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | RANDOLPH | MA |
| 2001-05-10 | 417-647 | SOUTHWESTERN BELL | 9533 | REPUBLIC | MO |
| 2001-05-10 | 417-658 | METROPCS, INC. | 5562 | NEOSHO | MO |
| 2001-05-10 | 417-758 | SOUTHWESTERN BELL | 9533 | CARTHAGE | MO |
| 2001-05-10 | 417-772 | SOUTHWESTERN BELL | 9533 | MONETT | MO |
| 2001-05-10 | 443-229 | PAETEC ITEL, LLC | 829J | SEVERNA PK | MD |
| 2001-05-10 | 443-242 | PAETEC ITEL, LLC | 829J | SPARROWSPT | MD |
| 2001-05-10 | 443-265 | PAETEC ITEL, LLC | 829J | FORK | MD |
| 2001-05-10 | 443-322 | PAETEC ITEL, LLC | 829J | TOWSON | MD |
| 2001-05-10 | 443-544 | PAETEC ITEL, LLC | 829J | PIKESVILLE | MD |
| 2001-05-10 | 443-565 | PAETEC ITEL, LLC | 829J | RANDALLSTN | MD |
| 2001-05-10 | 443-575 | PAETEC ITEL, LLC | 829J | ARBUTUS | MD |
| 2001-05-10 | 443-626 | PAETEC ITEL, LLC | 829J | CHASE | MD |
| 2001-05-10 | 443-656 | PAETEC ITEL, LLC | 829J | COLUMBIA | MD |
| 2001-05-10 | 443-662 | PAETEC ITEL, LLC | 829J | SPARKSGLNC | MD |
| 2001-05-10 | 443-670 | PAETEC ITEL, LLC | 829J | CATONSVL | MD |
| 2001-05-10 | 443-673 | PAETEC ITEL, LLC | 829J | BRYNPKLNCM | MD |
| 2001-05-10 | 443-688 | PAETEC ITEL, LLC | 829J | SEVERN | MD |
| 2001-05-10 | 443-689 | PAETEC ITEL, LLC | 829J | COCKEYSVL | MD |
| 2001-05-10 | 443-696 | PAETEC ITEL, LLC | 829J | DUNDALK | MD |
| 2001-05-10 | 443-702 | PAETEC ITEL, LLC | 829J | ARGRGBSNIS | MD |
| 2001-05-10 | 443-704 | PAETEC ITEL, LLC | 829J | ODENTON | MD |
| 2001-05-10 | 636-236 | T-MOBILE USA, INC. | 6529 | CHESTERFLD | MO |
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.