NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2016-01-18 716-717 0–9 XXXall 10 · 4 holders which blocks → WIDE VOICE, LLC - NY 705G BUFFALO NY
2016-01-18 737-717 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C AUSTIN TX
2016-01-15 202-873 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - DC 850D WSHNGTNZN1 DC
2016-01-15 206-413 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
2016-01-15 206-823 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 BAINBDG IS WA
2016-01-15 253-260 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
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
2016-01-15 315-201 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C MACDOUGALL NY
2016-01-15 337-607 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 SULPHUR LA
2016-01-15 361-414 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J C CHRISTI TX
2016-01-15 385-263 0–9 XXXwhole prefix which blocks → ONVOY, LLC - UT 871E ALTA UT
2016-01-15 424-305 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LOMITA CA
2016-01-15 425-626 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT WA
2016-01-15 469-954 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 FORNEY TX
2016-01-15 470-397 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D ROCKMART GA
2016-01-15 470-449 0–9 XXXall 10 · 4 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2016-01-15 470-529 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ADAIRSVL GA
2016-01-15 509-934 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2016-01-15 510-345 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 OKLD BKLY CA
2016-01-15 515-776 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2016-01-15 516-260 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN05 NY
2016-01-15 570-927 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J LOCK HAVEN PA
2016-01-15 646-975 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J NWYRCYZN01 NY
2016-01-15 650-334 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 PALO ALTO CA
2016-01-15 657-287 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2016-01-15 702-986 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2016-01-15 754-248 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FTLAUDERDL FL
2016-01-15 878-645 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 GREENSBURG PA
2016-01-15 914-608 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WSCHSTZN01 NY
2016-01-15 929-216 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN04 NY
2016-01-15 929-217 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN05 NY
2016-01-15 929-290 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN06 NY
2016-01-15 929-301 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN07 NY
2016-01-15 929-433 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN12 NY
2016-01-15 949-239 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CA 649C NEWPORTBCH CA
2016-01-15 971-517 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 MCMINNVL OR
2016-01-14 305-930 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 KEYS FL
2016-01-14 317-556 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-01-14 318-701 0XXX1XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 SHREVEPORT LA
2016-01-14 407-881 0–9 XXXall 10 · 2 holders which blocks → METROPCS NETWORKS, LLC 899D ORLANDO FL
2016-01-14 423-682 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CHATTNOOGA TN
2016-01-14 586-448 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MT CLEMENS MI
2016-01-14 586-629 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MT CLEMENS MI
2016-01-14 586-848 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MT CLEMENS MI
2016-01-14 629-207 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MURFREESBO TN
2016-01-14 629-215 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 NASHVILLE TN
2016-01-14 702-881 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.