NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, all time — NPA 267
PAETEC ITEL, LLC 134
OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 123
LEVEL 3 COMMUNICATIONS, LLC - PA 94
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 82
NEW CINGULAR WIRELESS PCS, LLC - DC 68
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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2017-11-06 267-827 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LANSDALE PA
2017-08-25 267-805 0–9 XXXwhole prefix which blocks → ONVOY, LLC - PA 547E PHLDLPHZN3 PA
2017-08-22 267-826 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 PHPHSBZN40 PA
2017-08-15 267-473 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2017-08-15 267-541 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN1 PA
2017-08-10 267-792 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN1 PA
2017-08-08 267-703 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E PHLDLPHZN1 PA
2017-07-21 267-883 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2017-06-05 267-831 0–9 XXXall 10 · 6 holders which blocks → TELNYX LLC 073H PHLDLPHZN1 PA
2017-05-15 267-768 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 PHLDLPHZN1 PA
2017-05-09 267-990 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H PHLDLPHZN1 PA
2017-05-05 267-734 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H PHLDLPHZN4 PA
2017-03-14 267-904 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 LANSDALE PA
2017-03-09 267-730 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 QUAKERTOWN PA
2017-03-01 267-748 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 PHLDLPHZN3 PA
2016-11-22 267-742 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 DOYLESTOWN PA
2016-11-15 267-726 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 PHPHSBZN40 PA
2016-11-14 267-822 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2016-10-28 267-832 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEWTOWN PA
2016-10-07 267-561 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J PHLDLPHZN1 PA
2016-09-29 267-673 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN39 PA
2016-09-29 267-674 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2016-09-29 267-924 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2016-08-23 267-691 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PHLDLPHZN4 PA
2016-06-28 267-920 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MORRISVL PA
2016-06-23 267-576 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 DOYLESTOWN PA
2016-06-23 267-665 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN2 PA
2016-06-20 267-785 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2016-05-19 267-866 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D PHLDLPHZN1 PA
2016-04-21 267-623 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2016-04-21 267-769 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2016-04-04 267-366 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN2 PA
2016-03-28 267-618 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2016-03-28 267-778 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J PHPHSBZN40 PA
2016-03-25 267-542 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2016-02-22 267-810 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E DOYLESTOWN PA
2016-01-15 267-534 0–9 XXXall 10 · 6 holders which blocks → BUSINESS AUTOMATION TECHNOLOGIES INC - PA 761H PHLDLPHZN1 PA
2016-01-15 267-680 0–9 XXXall 10 · 6 holders which blocks → BARR TELL USA, INC. - PA 752H QUAKERTOWN PA
2016-01-15 267-890 0–9 XXXall 10 · 4 holders which blocks → BARR TELL USA, INC. - PA 752H HARLEYSVL PA
2016-01-15 267-903 0–9 XXXall 10 · 4 holders which blocks → BARR TELL USA, INC. - PA 752H LANSDALE PA
2016-01-04 267-710 0–9 XXXwhole prefix which blocks → ONVOY, LLC - PA 547E PHLDLPHZN4 PA
2015-12-30 267-780 0–9 XXXall 10 · 6 holders which blocks → BARR TELL USA, INC. - PA 752H PHLDLPHZN1 PA
2015-12-24 267-361 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E PHLDLPHZN2 PA
2015-12-17 267-510 0–9 XXXall 10 · 2 holders which blocks → WIDE VOICE, LLC - PA 218H MORRISVL PA
2015-12-17 267-676 0–9 XXXall 10 · 2 holders which blocks → WIDE VOICE, LLC - PA 218H NEWTOWN PA
2015-12-17 267-696 0–9 XXXall 10 · 2 holders which blocks → WIDE VOICE, LLC - PA 218H PHLDLPHZN2 PA
2015-12-17 267-786 0–9 XXXall 10 · 2 holders which blocks → WIDE VOICE, LLC - PA 218H PHPHSBZN40 PA
2015-12-16 267-533 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 PHLDLPHZN1 PA
2015-12-14 267-877 0–9 XXXall 10 · 2 holders which blocks → WIDE VOICE, LLC - PA 218H PHLDLPHZN3 PA
2015-12-14 267-906 0–9 XXXall 10 · 2 holders which blocks → WIDE VOICE, LLC - PA 218H YARDLEY PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.