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
2014-03-03 289-403 not yet reported which blocks → Bell Canada 8051 Ajax-Pickering —
2014-03-03 289-657 not yet reported which blocks → Bell Canada 8051 Woodbridge —
2014-03-03 306-700 not yet reported which blocks → Iristel Inc. 154E Saskatoon —
2014-03-03 314-896 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ST LOUIS MO
2014-03-03 317-998 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 INDIANAPLS IN
2014-03-03 343-600 not yet reported which blocks → Iristel Inc. 154E Belleville —
2014-03-03 386-800 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 7 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G CRESCENTCY FL
2014-03-03 405-430 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
2014-03-03 561-480 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2014-03-03 562-584 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E NORWALK CA
2014-03-03 570-844 0XXX1XXX2XXX3XXX4XXX7XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F BUSHKILL PA
2014-03-03 574-218 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ELKHART IN
2014-03-03 579-400 not yet reported which blocks → Iristel Inc. 154E Marieville —
2014-03-03 579-900 not yet reported which blocks → Iristel Inc. 154E Boucherville —
2014-03-03 614-615 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 COLUMBUS OH
2014-03-03 614-815 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 COLUMBUS OH
2014-03-03 614-816 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 COLUMBUS OH
2014-03-03 631-633 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J BELLPORT NY
2014-03-03 646-780 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J NWYRCYZN01 NY
2014-03-03 650-437 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SAN MATEO CA
2014-03-03 657-226 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E PLACENTIA CA
2014-03-03 669-233 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LOS GATOS CA
2014-03-03 774-424 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2014-03-03 778-642 not yet reported which blocks → CityWest Cable (North) Corp - BC 705F Houston —
2014-03-03 781-800 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEEDHAM MA
2014-03-03 802-575 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TOPSHAM COMMUNICATIONS, LLC 573F GROTON VT
2014-03-03 803-623 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHESTER SC
2014-03-03 805-678 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E POINT MUGU CA
2014-03-03 813-609 0–9 XXXall 10 · 4 holders which blocks → BARR TELL USA, INC. - FL 305H TAMPACEN FL
2014-03-03 845-287 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 CARMEL NY
2014-03-03 856-930 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CAMDEN NJ
2014-03-03 859-279 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 COVINGTON KY
2014-03-03 862-930 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 ORANGE NJ
2014-03-03 901-443 0–9 XXXall 10 · 2 holders which blocks → AT&T ENTERPRISES, LLC 516C MEMPHIS TN
2014-03-03 928-421 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F WINSLOW AZ
2014-03-03 929-274 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN04 NY
2014-03-03 929-277 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN07 NY
2014-03-03 929-279 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN09 NY
2014-03-03 929-314 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN14 NY
2014-03-03 937-815 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 DAYTON OH
2014-02-28 202-768 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 6402 WSHNGTNZN1 DC
2014-02-28 209-252 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E TURLOCK CA
2014-02-28 210-960 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2014-02-28 216-307 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 CLEVELAND OH
2014-02-28 314-764 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LADUE MO
2014-02-28 323-694 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 02 CA
2014-02-28 323-736 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 14 CA
2014-02-28 415-770 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SNFC MT-EV CA
2014-02-28 417-319 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 SPRINGFLD MO
2014-02-28 510-838 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E OKLD FRTVL CA

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.