NumberResearch Membership · Data 09/21/2026

Recent prefix assignments

338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026

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. 38
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
2022-11-03 878-898 7XXX8XXX9XXX which blocks → ONVOY, LLC - PA 547E COOPERSTWN PA
2022-11-03 910-996 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NC 638E PEMBROKE NC
2022-11-03 943-343 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H GAINESVL GA
2022-11-03 980-452 0–9 XXXwhole prefix which blocks → ONVOY, LLC - NC 638E LINCOLNTON NC
2022-11-03 984-310 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CLAYTON NC
2022-11-02 220-239 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C MARION OH
2022-11-02 220-240 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OH 464C CHESAPEAKE OH
2022-11-02 220-324 2XXX3XXX4XXX · 2 holders which blocks → ONVOY, LLC - OH 464C NEWMRSHFLD OH
2022-11-02 220-740 0XXX1XXX7XXX · 2 holders which blocks → ONVOY, LLC - OH 464C LOWERSALEM OH
2022-11-02 346-603 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ALVIN TX
2022-11-02 380-324 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C GAHANNA OH
2022-11-02 567-456 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C PERRYSBURG OH
2022-11-02 629-285 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H NASHVILLE TN
2022-11-02 785-247 0XXX1XXX2XXX which blocks → COMMIO, LLC 939H DELIA KS
2022-11-02 785-281 8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BARNES KS
2022-11-02 848-340 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PERTHAMBOY NJ
2022-11-02 862-408 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PASSAIC NJ
2022-11-02 945-279 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J DALLAS TX
2022-11-02 971-442 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2022-11-02 979-346 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H MATAGORDA TX
2022-11-01 219-269 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GARY IN
2022-11-01 354-580 not yet reported which blocks → TELUS Mobility 8303 Valleyfield —
2022-11-01 354-999 not yet reported which blocks → TELUS Mobility 8303 St-Jerome —
2022-11-01 725-485 0–9 XXXwhole prefix which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2022-11-01 864-856 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 4 holders which blocks → ONVOY, LLC - SC 548E HODGES SC
2022-11-01 913-456 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - KS 8995 KANSASCITY KS
2022-10-31 239-402 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C CAPE CORAL FL
2022-10-31 252-664 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → METROPCS, INC. 5562 HALIFAX NC
2022-10-31 321-641 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C TITUSVILLE FL
2022-10-31 448-450 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - FL 937C YONGSTFNTN FL
2022-10-31 561-956 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C DELRAY BCH FL
2022-10-31 656-207 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPACEN FL
2022-10-31 656-952 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C TAMPACEN FL
2022-10-31 681-392 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LOGAN WV
2022-10-31 771-218 0–9 XXXwhole prefix which blocks → ONVOY, LLC - DC 850D WSHNGTNZN1 DC
2022-10-31 830-384 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HONDO TX
2022-10-31 848-339 0–9 XXXall 10 · 2 holders which blocks → COMCAST IP PHONE, LLC 318J ASBURYPARK NJ
2022-10-31 904-871 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C PNTVDRABCH FL
2022-10-28 213-691 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2022-10-28 213-696 0–9 XXXall 10 · 3 holders which blocks → METROPCS NETWORKS, LLC 899D LSAN DA 07 CA
2022-10-28 326-208 1XXX2XXX3XXX4XXX7XXX · 2 holders which blocks → NUSO, LLC 732J LIBERTY OH
2022-10-28 330-582 1XXX2XXX which blocks → NUSO, LLC 732J DELLROY OH
2022-10-28 343-322 not yet reported which blocks → Videotron Ltd. 787G Ottawa-Hull —
2022-10-28 346-602 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BAYTOWN TX
2022-10-28 350-202 0XXX1XXX2XXX8XXX9XXX · 3 holders which blocks → COMMIO, LLC 939H THORNTON CA
2022-10-28 380-256 0XXX1XXX2XXX3XXX8XXX9XXX · 2 holders which blocks → NUSO, LLC 732J ALTON OH
2022-10-28 409-298 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H KOUNTZE TX
2022-10-28 448-953 0XXX3XXX7XXX · 2 holders which blocks → ONVOY, LLC - FL 937C CHERRYLAKE FL
2022-10-28 505-536 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FARMINGTON NM
2022-10-28 505-538 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 WHITE ROCK NM

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.