NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
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
2014-03-20 816-535 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MO 993E BELTON MO
2014-03-20 819-984 not yet reported which blocks → IVIC Telecom s.e.n.c 817D Arthabaska —
2014-03-20 916-696 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 SCRM NORTH CA
2014-03-20 937-816 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 FAIRBORN OH
2014-03-20 949-536 0–9 XXXall 10 · 4 holders which blocks → AT&T ENTERPRISES, LLC 516C IRVINE CA
2014-03-20 970-294 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 FT COLLINS CO
2014-03-19 306-499 not yet reported which blocks → Access Communications Co-operative Limited 280H North Battleford —
2014-03-19 320-204 0–9 XXXall 10 · 4 holders which blocks → TEKSTAR COMMUNICATIONS, INC. 4156 ST CLOUD MN
2014-03-19 470-399 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2014-03-19 501-507 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 BENTON AR
2014-03-19 507-735 0XXX1XXX2XXX6XXX8XXX9XXX · 3 holders which blocks → TEKSTAR COMMUNICATIONS, INC. 4156 ROCHESTER MN
2014-03-19 513-725 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F CINCINNATI OH
2014-03-19 779-204 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC 224C VERONA IL
2014-03-19 808-859 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 HONOLULU HI
2014-03-19 865-347 0–9 XXXall 10 · 5 holders which blocks → POWERTEL NASHVILLE LICENSES, INC. 7476 KNOXVILLE TN
2014-03-18 254-242 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F CHINA SPG TX
2014-03-18 306-904 not yet reported which blocks → SaskTel 8091 Prince Albert —
2014-03-18 306-905 not yet reported which blocks → SaskTel 8091 Moose Jaw —
2014-03-18 306-906 not yet reported which blocks → SaskTel 8091 North Battleford —
2014-03-18 306-907 not yet reported which blocks → SaskTel 8091 Swift Current —
2014-03-18 432-216 0–9 XXXall 10 · 4 holders which blocks → BIG BEND TELECOM, LTD. - TX 193H MARATHON TX
2014-03-18 561-571 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL 8664 BOCA RATON FL
2014-03-18 587-537 not yet reported which blocks → TELUS 8084 Fort McMurray —
2014-03-18 682-302 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F SPRINGTOWN TX
2014-03-18 754-207 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 FTLAUDERDL FL
2014-03-18 778-640 not yet reported which blocks → CityWest Cable (North) Corp - BC 705F Smithers —
2014-03-17 201-989 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 WYCKOFF NJ
2014-03-17 317-986 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 INDIANAPLS IN
2014-03-17 414-439 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2014-03-17 469-573 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F PLANO TX
2014-03-17 602-726 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2014-03-17 612-404 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2014-03-17 636-551 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 CEDAR HILL MO
2014-03-17 708-940 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 HARVEY IL
2014-03-17 786-620 0–9 XXXall 10 · 3 holders which blocks → IDT AMERICA CORP. - FL 765A MIAMI FL
2014-03-17 872-229 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-17 872-251 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-17 872-252 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-17 872-706 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-17 872-707 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2014-03-17 989-459 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G BAY CITY MI
2014-03-14 424-343 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-03-14 609-438 0–9 XXXall 10 · 8 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 MERCERVL NJ
2014-03-14 651-219 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2014-03-13 317-991 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J INDIANAPLS IN
2014-03-13 360-979 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SILVERDALE WA
2014-03-13 407-636 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WINTERPARK FL
2014-03-13 437-405 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2014-03-13 437-406 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2014-03-13 437-407 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.