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
2018-09-28 229-490 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D REBECCA GA
2018-09-28 229-629 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D EDISON GA
2018-09-28 231-247 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E WILLIAMSBG MI
2018-09-28 234-258 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 MASSILLON OH
2018-09-28 236-473 not yet reported which blocks → TELUS 8086 Langley —
2018-09-28 236-474 not yet reported which blocks → TELUS 8086 Whalley —
2018-09-28 262-234 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 RACINE WI
2018-09-28 405-766 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F OKLA CITY OK
2018-09-28 435-244 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - UT 871E TOOELE UT
2018-09-28 843-897 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - SC 548E BENNETTSVL SC
2018-09-28 843-932 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - SC 548E GEORGETOWN SC
2018-09-28 843-938 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - SC 548E HARTSVILLE SC
2018-09-28 862-334 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 PASSAIC NJ
2018-09-28 867-327 not yet reported which blocks → Bell Mobility 6574 Baker Lake —
2018-09-28 867-328 not yet reported which blocks → Bell Mobility 6574 Rankin Inlet —
2018-09-28 907-802 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS 6563 ANCHORAGE AK
2018-09-28 947-221 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E DRAYTON PL MI
2018-09-27 209-316 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PLANADA CA
2018-09-27 236-550 not yet reported which blocks → Videotron Ltd. 383F Prince George —
2018-09-27 236-565 not yet reported which blocks → Videotron Ltd. 383F South Kamloops —
2018-09-27 236-585 not yet reported which blocks → Videotron Ltd. 383F Prince Rupert —
2018-09-27 251-292 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F MELVIN AL
2018-09-27 289-519 not yet reported which blocks → Videotron Ltd. 383F Port Hope —
2018-09-27 343-295 not yet reported which blocks → Videotron Ltd. 383F Napanee —
2018-09-27 343-325 not yet reported which blocks → Videotron Ltd. 383F Trenton —
2018-09-27 343-335 not yet reported which blocks → Videotron Ltd. 383F Prescott —
2018-09-27 442-302 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LUCERNEVLY CA
2018-09-27 562-399 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F DOWNEY CA
2018-09-27 573-510 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSON MO
2018-09-27 608-889 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F STOUGHTON WI
2018-09-27 657-317 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SILVERADO CA
2018-09-27 667-256 0–9 XXXall 10 · 5 holders which blocks → EXIANT COMMUNICATIONS LLC 114J ABERDEEN MD
2018-09-27 725-209 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF NEVADA, LLC - NV 408F INDIAN SPG NV
2018-09-27 737-246 0–9 XXXall 10 · 3 holders which blocks → AIRESPRING, INC. 996H AUSTIN TX
2018-09-27 747-281 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNFN PACM CA
2018-09-27 813-535 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E TAMPASTH FL
2018-09-27 825-307 not yet reported which blocks → Videotron Ltd. 383F Picture Butte —
2018-09-27 825-337 not yet reported which blocks → Videotron Ltd. 383F Taber —
2018-09-27 870-686 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - AR 196F BODCAW AR
2018-09-27 930-206 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D HANOVER IN
2018-09-27 930-207 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D SCIPIO IN
2018-09-27 985-289 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F FRANKLINTN LA
2018-09-26 218-490 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 FOSSTON MN
2018-09-26 236-490 not yet reported which blocks → Videotron Ltd. 383F Cranbrook —
2018-09-26 236-510 not yet reported which blocks → Videotron Ltd. 383F Chilliwack —
2018-09-26 313-351 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E DETROITZN3 MI
2018-09-26 337-469 0–9 XXXall 10 · 7 holders which blocks → LAFAYETTE CITY-PARISH CONSOLIDATED GOVERNMENT - LA 9002 CARENCRO LA
2018-09-26 343-405 not yet reported which blocks → Videotron Ltd. 383F Morrisburg —
2018-09-26 385-283 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - UT 117F PROVO UT
2018-09-26 423-583 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F SULIVNGDNS TN

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.