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
2018-01-19 806-594 0XXX1XXX2XXX3XXX9XXX · 3 holders which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 MOBEETIE TX
2018-01-19 806-597 9XXX which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 SMYER TX
2018-01-19 843-988 1XXX8XXX · 2 holders which blocks → SOUTH CAROLINA NET, INC. - SC 1784 HARLEYVL SC
2018-01-18 202-981 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 WSHNGTNZN1 DC
2018-01-18 581-491 not yet reported which blocks → Videotron Ltd. 8306 Quebec —
2018-01-18 628-230 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2018-01-18 639-345 not yet reported which blocks → TELUS Mobility 8303 Wynyard —
2018-01-18 650-402 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 HALFMOONBY CA
2018-01-18 762-265 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 ROME GA
2018-01-18 804-799 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - VA 138E RICHMOND VA
2018-01-18 805-424 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 SIMIVALLEY CA
2018-01-17 202-891 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN1 DC
2018-01-17 205-728 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALABASTER AL
2018-01-17 279-333 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C ELK GROVE CA
2018-01-17 346-294 0–9 XXXall 10 · 3 holders which blocks → IP GLOBAL NETWORKS - TX 763H HOUSTON TX
2018-01-17 445-666 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - PA 547E GREEN LANE PA
2018-01-17 509-906 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EPHRATA WA
2018-01-17 510-605 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HAYWARD CA
2018-01-17 540-681 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 FREDECKSBG VA
2018-01-17 571-752 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 HERNDON VA
2018-01-17 623-289 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2018-01-17 850-990 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX which blocks → ONVOY, LLC - FL 937C GULFBREEZE FL
2018-01-17 949-763 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NEWPORTBCH CA
2018-01-16 205-850 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E WARRIOR AL
2018-01-16 236-352 not yet reported which blocks → Shaw Telecom Inc. 497E Grand Forks —
2018-01-16 236-353 not yet reported which blocks → Shaw Telecom Inc. 497E Greenwood —
2018-01-16 236-354 not yet reported which blocks → Shaw Telecom Inc. 497E Midway —
2018-01-16 236-355 not yet reported which blocks → Shaw Telecom Inc. 497E Hope —
2018-01-16 236-356 not yet reported which blocks → Shaw Telecom Inc. 497E Wynndel —
2018-01-16 251-620 0–9 XXXall 10 · 4 holders which blocks → TELEPAK NETWORKS, INC. - AL 947G MOBILE AL
2018-01-16 346-293 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2018-01-16 423-459 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F CHATTNOOGA TN
2018-01-16 551-289 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 HACKENSACK NJ
2018-01-16 825-221 not yet reported which blocks → TELUS 8084 Red Deer —
2018-01-16 878-220 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 EXPORT PA
2018-01-15 236-350 not yet reported which blocks → Shaw Telecom Inc. 497E Christina Lake —
2018-01-15 236-351 not yet reported which blocks → Shaw Telecom Inc. 497E Creston —
2018-01-15 501-271 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PALARM AR
2018-01-15 587-695 not yet reported which blocks → Shaw Telecom Inc. 497E Edmonton International Airport —
2018-01-15 612-380 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TWINCITIES MN
2018-01-15 612-383 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TWINCITIES MN
2018-01-15 781-525 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEEDHAM MA
2018-01-15 857-332 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2018-01-15 972-645 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ITALY TX
2018-01-12 209-449 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LIVINGSTON CA
2018-01-12 424-559 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 W ANGELES CA
2018-01-12 445-222 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E PENNSBURG PA
2018-01-12 445-333 0–9 XXXall 10 · 8 holders which blocks → ONVOY, LLC - PA 547E QUAKERTOWN PA
2018-01-12 445-428 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 PHLDLPHZN2 PA
2018-01-12 445-444 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E PHLDLPHZN1 PA

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.