NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2019-01-17 276-888 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J ST CHARLES VA
2019-01-17 346-377 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANGHAMCRK TX
2019-01-17 431-832 not yet reported which blocks → Bell West Inc. 2933 Alexander —
2019-01-17 431-833 not yet reported which blocks → Bell West Inc. 2933 Boissevain —
2019-01-17 431-834 not yet reported which blocks → Bell West Inc. 2933 Hamiota —
2019-01-17 431-835 not yet reported which blocks → Bell West Inc. 2933 Minnedosa —
2019-01-17 431-836 not yet reported which blocks → Bell West Inc. 2933 Rivers —
2019-01-17 431-837 not yet reported which blocks → Bell West Inc. 2933 Roblin —
2019-01-17 431-838 not yet reported which blocks → Bell West Inc. 2933 Strathclair —
2019-01-17 431-839 not yet reported which blocks → Bell West Inc. 2933 Virden —
2019-01-17 432-246 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TERMINAL TX
2019-01-17 469-594 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2019-01-17 469-596 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F PLANO TX
2019-01-17 470-480 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J ATLANTA GA
2019-01-17 510-956 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E OKLD ALMD CA
2019-01-17 602-607 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2019-01-17 719-820 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J COLORDOSPG CO
2019-01-17 980-385 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 MOUNTHOLLY NC
2019-01-16 204-306 not yet reported which blocks → Shaw Telecom Inc. 497E Winnipeg —
2019-01-16 228-999 0–9 XXXall 10 · 3 holders which blocks → TERRA NOVA TELECOM INC. 145J BILOXI MS
2019-01-16 320-999 0–9 XXXall 10 · 6 holders which blocks → TERRA NOVA TELECOM INC. 145J SANDSTONE MN
2019-01-16 332-207 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2019-01-16 417-410 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 BOLIVAR MO
2019-01-16 469-592 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 FRISCO TX
2019-01-16 681-999 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J MORGANTOWN WV
2019-01-16 682-283 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ARLINGTON TX
2019-01-16 716-815 0–9 XXXall 10 · 6 holders which blocks → HD CARRIER LLC 321J BUFFALO NY
2019-01-16 772-272 0–9 XXXall 10 · 3 holders which blocks → INVOXIO INCORPORATED 158H PTST LUCIE FL
2019-01-16 838-839 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J ALBANY NY
2019-01-16 850-813 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C PONCE LEON FL
2019-01-16 864-535 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 GREENVILLE SC
2019-01-16 907-308 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS 6563 ANCHORAGE AK
2019-01-16 929-504 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN04 NY
2019-01-16 929-724 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN14 NY
2019-01-16 930-888 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J CHARLESTN IN
2019-01-16 954-664 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 FTLAUDERDL FL
2019-01-15 213-451 0–9 XXXall 10 · 6 holders which blocks → METROPCS NETWORKS, LLC 899D LSAN DA 13 CA
2019-01-15 239-286 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FORT MYERS FL
2019-01-15 470-453 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2019-01-15 514-672 not yet reported which blocks → InnSysVoice Corp 383H Montreal —
2019-01-15 551-299 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 FAIR LAWN NJ
2019-01-15 629-231 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - TN 525E OLDHICKORY TN
2019-01-15 820-300 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C GUADALUPE CA
2019-01-15 863-251 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WINTER HVN FL
2019-01-15 931-236 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - TN 525E FREDONIA TN
2019-01-15 931-382 0XXX1XXX2XXX8XXX · 3 holders which blocks → ONVOY, LLC - TN 525E HAMPSHIRE TN
2019-01-15 986-888 0–9 XXXall 10 · 6 holders which blocks → TERRA NOVA TELECOM INC. 145J BOISE ID
2019-01-14 202-914 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN1 DC
2019-01-14 470-452 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2019-01-14 480-546 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 PHOENIX AZ

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.