NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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 — NPA 361
8X8, INC. 1
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
2021-10-04 361-281 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 C CHRISTI TX
2021-09-03 361-399 0–9 XXXall 10 · 3 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J C CHRISTI TX
2021-07-26 361-966 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H ROBSTOWN TX
2021-07-06 361-303 0XXX3XXX9XXX · 2 holders which blocks → ONVOY, LLC - TX 903C PREMONT TX
2021-06-22 361-278 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 478J C CHRISTI TX
2021-05-07 361-280 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → TELNYX LLC 073H YOAKUM TX
2021-04-21 361-833 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J C CHRISTI TX
2021-04-14 361-905 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H C CHRISTI TX
2021-04-02 361-631 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H C CHRISTI TX
2021-03-19 361-901 0XXX2XXX3XXX9XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H PORTLAVACA TX
2021-03-02 361-599 0XXX1XXX3XXX5XXX7XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H AGUA DULCE TX
2021-03-02 361-699 0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H MATHIS TX
2021-02-16 361-787 3XXX4XXX7XXX8XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SEADRIFT TX
2021-01-14 361-567 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H BRUNI TX
2021-01-14 361-732 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H ARANSSPASS TX
2021-01-14 361-789 3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H PT COMFORT TX
2021-01-14 361-842 5XXX which blocks → FRACTEL, LLC 965H ARMSTRONG TX
2021-01-14 361-899 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H SAN DIEGO TX
2020-12-08 361-910 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C C CHRISTI TX
2020-09-28 361-267 0–9 XXXall 10 · 5 holders which blocks → IP HORIZON LLC 515J C CHRISTI TX
2020-07-10 361-377 0XXX1XXX2XXX3XXX7XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H SKIDMORE TX
2020-07-10 361-477 0XXX1XXX7XXX · 3 holders which blocks → FRACTEL, LLC 965H YORKTOWN TX
2020-06-23 361-677 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H C CHRISTI TX
2020-06-18 361-766 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ALICE TX
2020-04-10 361-263 0–9 XXXall 10 · 2 holders which blocks → STPCS JOINT VENTURE, LLC 4290 ALICE TX
2020-02-19 361-261 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 PORTLDGGRY TX
2019-12-02 361-260 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H C CHRISTI TX
2019-11-20 361-300 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H C CHRISTI TX
2019-11-20 361-465 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H VICTORIA TX
2019-08-27 361-259 0–9 XXXall 10 · 2 holders which blocks → EXIANT COMMUNICATIONS LLC 114J C CHRISTI TX
2019-08-07 361-253 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 C CHRISTI TX
2019-07-31 361-252 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F C CHRISTI TX
2019-05-23 361-251 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 C CHRISTI TX
2019-04-01 361-363 0–9 XXXall 10 · 4 holders which blocks → CSC WIRELESS, LLC 425J VICTORIA TX
2019-03-19 361-206 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 C CHRISTI TX
2019-01-03 361-342 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 C CHRISTI TX
2018-11-15 361-337 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - TX 903C BERCLAIR TX
2018-11-15 361-338 0XXX2XXX3XXX4XXX5XXX8XXX · 2 holders which blocks → ONVOY, LLC - TX 903C CHARCO TX
2018-11-15 361-344 0XXX1XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - TX 903C PAWNEE TX
2018-08-30 361-366 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C SAN DIEGO TX
2018-05-15 361-268 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F GEORGEWEST TX
2018-03-13 361-257 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D C CHRISTI TX
2017-12-20 361-295 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 C CHRISTI TX
2017-09-27 361-666 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C ALICE TX
2017-09-18 361-223 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BENAVIDES TX
2017-03-16 361-495 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HEBBRONVL TX
2016-04-26 361-347 0XXX1XXX2XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J TAFT TX
2016-04-26 361-831 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J FLATONIA TX
2016-04-13 361-978 7XXX8XXX · 2 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J ENCINO TX
2016-04-07 361-352 7XXX which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MIRANDO CY TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.