NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
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
2021-10-29 769-271 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NATCHEZ MS
2021-10-29 769-272 0–9 XXXall 10 · 3 holders which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 VICKSBURG MS
2021-10-29 862-389 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 NEWTON NJ
2021-10-28 213-492 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2021-10-28 213-574 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2021-10-28 254-483 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - TX 903C TEMPLE TX
2021-10-28 307-291 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H CODY WY
2021-10-28 341-204 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E FRNK GRNLF CA
2021-10-28 341-420 0–9 XXXall 10 · 5 holders which blocks → SONIC TELECOM, LLC - CA 433E OKLD FRTVL CA
2021-10-28 346-518 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F PINEHURST TX
2021-10-28 346-522 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C HUMBLE TX
2021-10-28 424-454 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CMTN CMTN CA
2021-10-28 424-460 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CULVERCITY CA
2021-10-28 425-370 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 BELLEVUE WA
2021-10-28 442-364 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 BRAWLEY CA
2021-10-28 520-242 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 WILLCOX AZ
2021-10-28 520-451 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 TUCSON AZ
2021-10-28 559-378 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E TULARE CA
2021-10-28 559-576 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E PORTERVL CA
2021-10-28 640-214 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F EWING NJ
2021-10-28 661-531 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 ARVIN CA
2021-10-28 701-504 0–9 XXXall 10 · 6 holders which blocks → COMMIO, LLC 939H DICKINSON ND
2021-10-28 708-630 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E BERWYN IL
2021-10-28 747-488 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SNFN SNFN CA
2021-10-28 830-354 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C DEL RIO TX
2021-10-28 830-362 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H FREDECKSBG TX
2021-10-28 830-364 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - TX 903C HONDO TX
2021-10-28 840-207 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ARROWHEAD CA
2021-10-28 840-588 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H DIAMONDBAR CA
2021-10-28 840-677 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ETIWANDA CA
2021-10-28 872-295 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN03 IL
2021-10-28 872-296 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC 224C CHICGOZN03 IL
2021-10-28 872-336 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H CHICGOZN01 IL
2021-10-28 872-946 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CHICGOZN03 IL
2021-10-28 909-916 0XXX1XXX2XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E BIGBEAR LK CA
2021-10-28 945-228 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F CEDAR HILL TX
2021-10-28 971-417 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 PORTLAND OR
2021-10-27 224-455 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H WAUKEGAN IL
2021-10-27 224-466 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H NORTHBROOK IL
2021-10-27 224-833 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H ELGIN IL
2021-10-27 224-844 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H ARLIGTNHTS IL
2021-10-27 269-346 0XXX3XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E HOPKINS MI
2021-10-27 302-586 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - DE 073F MILFORD DE
2021-10-27 319-303 1XXX2XXX7XXX8XXX · 4 holders which blocks → AUREON COMMUNICATIONS, LLC 444G DENVER IA
2021-10-27 319-305 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 5 holders which blocks → AUREON COMMUNICATIONS, LLC 444G MT VERNON IA
2021-10-27 331-758 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H AURORA IL
2021-10-27 413-450 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E AMHERST MA
2021-10-27 463-258 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F DANVILLE IN
2021-10-27 463-259 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F CUMBERLAND IN
2021-10-27 470-879 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E CARROLLTON GA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.