NumberResearch Membership · Data 09/28/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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
2019-12-05 820-600 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H PISMOBEACH CA
2019-12-05 820-800 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CAYUCOS CA
2019-12-05 820-900 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H BRADLEY CA
2019-12-05 854-300 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SUMMERVL SC
2019-12-05 902-381 not yet reported which blocks → Bell Mobility Aliant 329A Kentville —
2019-12-05 913-374 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - KS 7593 KANSASCITY KS
2019-12-04 365-244 not yet reported which blocks → Bell Mobility 6574 Oshawa —
2019-12-04 431-243 not yet reported which blocks → Bell Mobility 6574 Thompson —
2019-12-04 639-217 not yet reported which blocks → Bell Mobility 6574 Humboldt —
2019-12-04 825-308 not yet reported which blocks → Bell Mobility 6574 Red Deer —
2019-12-04 854-766 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H EDISTO IS SC
2019-12-04 867-232 not yet reported which blocks → Bell Mobility 6574 Arviat —
2019-12-03 341-222 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H OKLD FRTVL CA
2019-12-03 341-444 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H CROCKETT CA
2019-12-03 341-800 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H HAYWARD CA
2019-12-03 579-348 not yet reported which blocks → Bell Mobility 6574 St-Hyacinthe —
2019-12-03 581-443 not yet reported which blocks → Bell Mobility 6574 Quebec —
2019-12-03 854-204 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H FLORENCE SC
2019-12-03 867-274 not yet reported which blocks → Bell Mobility 6574 Whitehorse —
2019-12-02 207-855 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H OAKLAND ME
2019-12-02 229-666 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H PELHAM GA
2019-12-02 229-877 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H VALDOSTA GA
2019-12-02 236-463 not yet reported which blocks → Bell Mobility 6574 Parksville —
2019-12-02 251-356 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H FINCHBURG AL
2019-12-02 251-529 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H MOBILE AL
2019-12-02 256-699 0XXX1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H LEESBURG AL
2019-12-02 256-788 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H HUNTSVILLE AL
2019-12-02 256-877 0XXX1XXX2XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H SAND ROCK AL
2019-12-02 256-944 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H JACKSONVL AL
2019-12-02 256-946 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H WOODLAND AL
2019-12-02 256-977 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H GUNTERSVL AL
2019-12-02 279-400 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H LINCOLN CA
2019-12-02 279-500 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H MICHIGNBAR CA
2019-12-02 279-529 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H RSVL CTHT CA
2019-12-02 279-600 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SCRM MAIN CA
2019-12-02 325-283 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H ABILENE TX
2019-12-02 361-260 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H C CHRISTI TX
2019-12-02 385-316 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FARMINGTON UT
2019-12-02 409-247 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H BEAUMONT TX
2019-12-02 430-267 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H LONGVIEW TX
2019-12-02 432-277 0XXX1XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELNYX LLC 073H MIDLAND TX
2019-12-02 506-552 not yet reported which blocks → Rogers Communications Canada Inc. 571G Saint John —
2019-12-02 530-855 0XXX1XXX5XXX · 3 holders which blocks → FRACTEL, LLC 965H CHICO CA
2019-12-02 647-564 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-12-02 657-413 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CYPRESS CA
2019-12-02 659-356 2XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H ASHVILLE AL
2019-12-02 681-280 0–9 XXXall 10 · 2 holders which blocks → TELNYX LLC 073H CHRLSTNZN1 WV
2019-12-02 712-512 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → HD CARRIER LLC 321J MINEOLA IA
2019-12-02 712-513 0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 5 holders which blocks → HD CARRIER LLC 321J CARROLL IA
2019-12-02 806-696 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H LUBBOCK TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.