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
2018-05-01 681-385 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2018-05-01 716-412 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E HAMBURG NY
2018-05-01 825-722 not yet reported which blocks → Distributel 081E Chauvin —
2018-05-01 825-723 not yet reported which blocks → Distributel 081E Cold Lake —
2018-05-01 825-724 not yet reported which blocks → Distributel 081E Czar —
2018-05-01 825-725 not yet reported which blocks → Distributel 081E Derwent —
2018-05-01 825-726 not yet reported which blocks → Distributel 081E Edgerton —
2018-05-01 825-727 not yet reported which blocks → Distributel 081E Elk Point —
2018-05-01 825-728 not yet reported which blocks → Distributel 081E Glendon —
2018-05-01 862-319 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PATERSON NJ
2018-05-01 913-318 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K KANSASCITY KS
2018-05-01 989-985 0XXX2XXX3XXX5XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E FOWLERPWMO MI
2018-04-30 267-985 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 QUAKERTOWN PA
2018-04-30 272-639 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 LANSFORD PA
2018-04-30 484-822 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 ALLENTOWN PA
2018-04-30 825-372 not yet reported which blocks → Distributel 081E Holden —
2018-04-30 825-373 not yet reported which blocks → Distributel 081E Hughenden —
2018-04-30 825-374 not yet reported which blocks → Distributel 081E Innisfree —
2018-04-30 825-375 not yet reported which blocks → Distributel 081E Irma —
2018-04-30 825-376 not yet reported which blocks → Distributel 081E Islay —
2018-04-30 825-377 not yet reported which blocks → Distributel 081E Kitscoty —
2018-04-30 825-378 not yet reported which blocks → Distributel 081E Lavoy —
2018-04-30 825-379 not yet reported which blocks → Distributel 081E Mannville —
2018-04-30 825-380 not yet reported which blocks → Distributel 081E Marwayne —
2018-04-30 825-381 not yet reported which blocks → Distributel 081E Minburn —
2018-04-30 825-382 not yet reported which blocks → Distributel 081E Mundare —
2018-04-30 825-383 not yet reported which blocks → Distributel 081E Myrnam —
2018-04-30 825-384 not yet reported which blocks → Distributel 081E Paradise Valley —
2018-04-30 825-385 not yet reported which blocks → Distributel 081E Ryley —
2018-04-30 825-386 not yet reported which blocks → Distributel 081E St. Paul —
2018-04-30 825-387 not yet reported which blocks → Distributel 081E Two Hills —
2018-04-30 825-388 not yet reported which blocks → Distributel 081E Vermilion —
2018-04-30 825-389 not yet reported which blocks → Distributel 081E Viking —
2018-04-30 825-390 not yet reported which blocks → Distributel 081E Vilna —
2018-04-30 825-391 not yet reported which blocks → Distributel 081E Willingdon —
2018-04-30 825-720 not yet reported which blocks → Distributel 081E Andrew —
2018-04-30 825-721 not yet reported which blocks → Distributel 081E Ashmont —
2018-04-27 437-341 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2018-04-27 437-342 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2018-04-27 437-343 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2018-04-27 437-684 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2018-04-27 531-223 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NE 549E HOWELLS NE
2018-04-27 701-233 2XXX3XXX · 2 holders which blocks → MIDCONTINENT COMMUNICATIONS - ND 3065 STARKWETHR ND
2018-04-27 825-369 not yet reported which blocks → Distributel 081E Grand Centre —
2018-04-27 825-370 not yet reported which blocks → Distributel 081E Hairy Hill —
2018-04-27 825-371 not yet reported which blocks → Distributel 081E Heinsburg —
2018-04-26 207-300 0–9 XXXall 10 · 6 holders which blocks → VONAGE AMERICA LLC 197D BANGOR ME
2018-04-26 209-307 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 STOCKTON CA
2018-04-26 214-836 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 MCKINNEY TX
2018-04-26 218-420 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E HAWLEY MN

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.