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
2014-03-25 567-706 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MONROEVL OH
2014-03-25 720-619 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F GEORGETOWN CO
2014-03-25 832-975 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C HOUSTON TX
2014-03-25 864-539 0–9 XXXall 10 · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 SENECA SC
2014-03-25 931-208 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MCEWEN TN
2014-03-25 931-701 0–9 XXXall 10 · 8 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J LYLES TN
2014-03-24 201-903 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C WYCKOFF NJ
2014-03-24 307-264 0–9 XXXall 10 · 5 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K JACKSON WY
2014-03-24 442-236 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 EL CENTRO CA
2014-03-24 604-493 not yet reported which blocks → Navigata Communications Limited 078G Whistler —
2014-03-24 669-234 0–9 XXXall 10 · 8 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SNJS SOUTH CA
2014-03-24 669-342 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SNJS WEST CA
2014-03-24 769-224 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J TERRY MS
2014-03-24 819-834 not yet reported which blocks → Videotron Ltd. 8306 Amos —
2014-03-24 832-977 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2014-03-24 832-981 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2014-03-24 925-481 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ANTIOCH CA
2014-03-24 951-395 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 TEMECULA CA
2014-03-21 209-857 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 MODESTO CA
2014-03-21 210-850 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2014-03-21 213-267 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 10 CA
2014-03-21 218-217 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - MN 184D BRIMSON MN
2014-03-21 218-307 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - MN 184D EMBARRASS MN
2014-03-21 218-318 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - MN 184D PALO MN
2014-03-21 218-413 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - MN 184D BABBITT MN
2014-03-21 260-508 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J ALBION IN
2014-03-21 657-234 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E YORBALINDA CA
2014-03-21 661-425 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SNCA NHCS CA
2014-03-21 661-486 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → METROPCS NETWORKS, LLC 899D PLDL AGDL CA
2014-03-21 661-556 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BKFD SOUTH CA
2014-03-21 682-304 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ARLINGTON TX
2014-03-21 765-504 7XXX which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J RICHMOND IN
2014-03-21 818-946 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 VAN NUYS CA
2014-03-21 832-872 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 CHANNELVW TX
2014-03-21 909-441 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 FONTANA CA
2014-03-21 949-431 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 IRVINE CA
2014-03-20 234-707 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 AURORA OH
2014-03-20 306-908 not yet reported which blocks → SaskTel 8091 Weyburn —
2014-03-20 306-909 not yet reported which blocks → SaskTel 8091 Yorkton —
2014-03-20 312-478 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2014-03-20 336-701 0–9 XXXall 10 · 4 holders which blocks → FRONTIER COMMUNICATIONS OF AMERICA, INC. - NC 440G WINSTN SAL NC
2014-03-20 401-214 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF RHODE ISLAND, LLC - RI 631G PROVIDENCE RI
2014-03-20 402-508 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOSIOUX CY NE
2014-03-20 587-585 not yet reported which blocks → TELUS Mobility 8301 Calgary —
2014-03-20 587-586 not yet reported which blocks → TELUS Mobility 8301 Calgary —
2014-03-20 614-200 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 ALTON OH
2014-03-20 651-417 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 RED WING MN
2014-03-20 660-522 0XXX1XXX2XXX3XXX5XXX · 4 holders which blocks → PEERLESS NETWORK OF MISSOURI, LLC - MO 225F BETHEL MO
2014-03-20 660-690 0XXX1XXX2XXX · 3 holders which blocks → PEERLESS NETWORK OF MISSOURI, LLC - MO 225F CREIGHTON MO
2014-03-20 808-518 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - HI 9414 HONOLULU HI

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.