NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

337 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 25
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 12
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
2013-04-08 469-506 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F GRANDPRARI TX
2013-04-08 469-606 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F PLANO TX
2013-04-08 470-625 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E GRANTVILLE GA
2013-04-08 678-203 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E CLERMONT GA
2013-04-08 832-905 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F LEAGUECITY TX
2013-04-08 832-952 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F CYPRESS TX
2013-04-08 860-785 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G HARTFORD CT
2013-04-08 909-325 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CHINO CA
2013-04-08 909-372 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CALIMESA CA
2013-04-08 951-374 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E RIVERSIDE CA
2013-04-08 985-216 not yet reported which blocks → ADVANCED TEL., INC. - LA 8839 GALLIANO LA
2013-04-08 985-301 not yet reported which blocks → ADVANCED TEL., INC. - LA 8839 GOLDEN MDW LA
2013-04-05 248-268 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J ROYAL OAK MI
2013-04-05 575-404 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2013-04-04 302-440 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF DELAWARE, LLC - DE 349F DELAWARECY DE
2013-04-04 314-736 0–9 XXXall 10 · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K LADUE MO
2013-04-04 440-340 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F VICTORY OH
2013-04-04 440-455 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F TRINITY OH
2013-04-04 440-630 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F BRECKSVL OH
2013-04-04 469-812 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F FARMERSVL TX
2013-04-04 505-373 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 ALBUQURQUE NM
2013-04-04 541-209 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OR 750E JEFFERSON OR
2013-04-04 607-383 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E CAMPBELL NY
2013-04-04 607-463 0–9 XXXall 10 · 8 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E CORNING NY
2013-04-04 607-536 0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E SAVONA NY
2013-04-04 631-268 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E SOUTHAMPTN NY
2013-04-04 646-795 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J NWYRCYZN01 NY
2013-04-04 682-228 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F CLEBURNE TX
2013-04-04 832-761 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F TOMBALL TX
2013-04-04 832-847 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F RICHMNRNBG TX
2013-04-04 832-945 0–9 XXXall 10 · 7 holders which blocks → AT&T ENTERPRISES, LLC 516C RICHMNRNBG TX
2013-04-04 845-286 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E PATTERSON NY
2013-04-04 862-308 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F CHATHAM NJ
2013-04-04 903-502 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F CANTON TX
2013-04-04 903-518 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F BELLSSAVOY TX
2013-04-04 903-913 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F GRANDSALIN TX
2013-04-04 914-353 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E CRTNONHDSN NY
2013-04-04 914-362 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E MOUNTKISCO NY
2013-04-04 914-875 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E SOUTHSALEM NY
2013-04-03 431-321 not yet reported which blocks → MTS Inc. 991B Clear Lake —
2013-04-03 516-231 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NASSAUZN04 NY
2013-04-03 631-430 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E GREENPORT NY
2013-04-03 631-518 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E BAY SHORE NY
2013-04-03 631-519 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E E FIRE IS NY
2013-04-03 631-571 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E ORIENT NY
2013-04-03 631-735 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E PECONIC NY
2013-04-03 754-205 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C POMPANOBCH FL
2013-04-03 774-407 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 DOVER MA
2013-04-03 778-453 not yet reported which blocks → Shaw Telecom Inc. 497E Thrums —
2013-04-03 778-454 not yet reported which blocks → Shaw Telecom Inc. 497E South Slocan —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.