NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 21
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
2021-01-11 774-456 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FRAMINGHAM MA
2021-01-11 786-435 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H MIAMI FL
2021-01-11 813-736 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E TAMPASTH FL
2021-01-11 820-348 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H OXNARD CA
2021-01-11 830-247 1XXX2XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 TARPLEY TX
2021-01-11 901-589 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2021-01-11 904-656 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - FL 937C JACKSOLBCH FL
2021-01-11 915-272 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 EL PASO TX
2021-01-11 945-200 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H ENNIS TX
2021-01-11 945-234 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H MCKINNEY TX
2021-01-11 945-345 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MIDLOTHIAN TX
2021-01-11 949-969 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H IRVINE CA
2021-01-11 984-529 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H KNIGHTDALE NC
2021-01-08 231-443 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C HONOR MI
2021-01-08 231-455 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C PENTWATER MI
2021-01-08 254-428 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - TX 903C EASTLAND TX
2021-01-08 256-863 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AL 604E HUNTSVILLE AL
2021-01-08 308-371 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NE 549E KEARNEY NE
2021-01-08 325-290 0XXX1XXX2XXX3XXX5XXX8XXX · 3 holders which blocks → ONVOY, LLC - TX 903C OZONA TX
2021-01-08 325-291 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C STERLINGCY TX
2021-01-08 332-241 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC- NY 384C NWYRCYZN01 NY
2021-01-08 385-427 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 KAYSVILLE UT
2021-01-08 386-343 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 DELAND FL
2021-01-08 409-261 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C GALVESTON TX
2021-01-08 409-262 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C SILSBEE TX
2021-01-08 470-742 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - GA 067D NEWNAN GA
2021-01-08 470-751 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H ATLANTA GA
2021-01-08 470-780 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - GA 067D BUFORD GA
2021-01-08 551-316 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NJ 637C CLIFFSIDE NJ
2021-01-08 561-589 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JUPITER FL
2021-01-08 602-784 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-01-08 609-237 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NJ 637C MERCERVL NJ
2021-01-08 619-902 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CHULAVISTA CA
2021-01-08 659-219 0–9 XXXall 10 · 5 holders which blocks → WHITESKY COMMUNICATIONS, LLC 553J BIRMINGHAM AL
2021-01-08 682-342 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C GRANBURY TX
2021-01-08 720-823 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CO 026D DENVER CO
2021-01-08 734-774 2XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLCV - MI 543C IDA MI
2021-01-08 737-283 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C LOMETA TX
2021-01-08 737-284 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C WIMBERLEY TX
2021-01-08 754-257 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 HOLLYWOOD FL
2021-01-08 762-274 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H DAWSONVL GA
2021-01-08 762-284 0XXX1XXX2XXX3XXX5XXX8XXX · 4 holders which blocks → ONVOY, LLC - GA 067D HELEN GA
2021-01-08 762-294 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D HIAWASSEE GA
2021-01-08 779-399 0XXX3XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H KINSMAN IL
2021-01-08 786-771 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 MIAMI FL
2021-01-08 813-729 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPASTH FL
2021-01-08 825-480 not yet reported which blocks → Shaw Telecom Inc. 497E Edmonton —
2021-01-08 848-306 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C SOUTHAMBOY NJ
2021-01-08 856-460 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NJ 637C BRIDGETON NJ
2021-01-08 858-241 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LA JOLLA CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.