NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

2 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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 — NPA 316
NEW CINGULAR WIRELESS PCS, LLC - IL 2
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
2021-06-23 316-394 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → ONVOY, LLC - KS 205F BENTON KS
2021-06-23 316-396 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - KS 205F HALSTEAD KS
2021-06-09 316-397 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - KS 205F GODDARD KS
2021-05-03 316-391 0–9 XXXall 10 · 4 holders which blocks → IP HORIZON LLC 515J WICHITA KS
2021-04-16 316-389 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 EL DORADO KS
2021-03-31 316-910 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - KS 205F WICHITA KS
2021-02-16 316-710 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H WICHITA KS
2021-02-04 316-376 0–9 XXXall 10 · 4 holders which blocks → STRATUS NETWORKS 495J WICHITA KS
2021-01-27 316-375 0–9 XXXall 10 · 3 holders which blocks → STRATUS NETWORKS 495J NEWTON KS
2020-11-11 316-374 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 GODDARD KS
2020-11-03 316-372 0–9 XXXall 10 · 3 holders which blocks → AIRESPRING, INC. 996H WICHITA KS
2020-09-02 316-370 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WICHITA KS
2020-08-28 316-369 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 478J WICHITA KS
2020-07-24 316-368 0–9 XXXall 10 · 5 holders which blocks → HD CARRIER LLC 321J WICHITA KS
2020-06-30 316-400 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H WICHITA KS
2019-12-17 316-365 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 GODDARD KS
2019-12-05 316-766 0–9 XXXall 10 · 5 holders which blocks → CORETEL KANSAS, INC. - KS 423J DOUGLASS KS
2019-12-05 316-837 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → CORETEL KANSAS, INC. - KS 423J GARDEN PL KS
2019-05-29 316-364 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J WICHITA KS
2019-01-22 316-800 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H HALSTEAD KS
2019-01-22 316-816 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H GODDARD KS
2018-03-23 316-669 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D WICHITA KS
2018-03-05 316-553 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 GODDARD KS
2017-12-18 316-360 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - KS 8995 WICHITA KS
2017-10-19 316-358 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J WICHITA KS
2017-08-03 316-867 0–9 XXXall 10 · 6 holders which blocks → COMMIO, LLC 939H WICHITA KS
2017-07-10 316-339 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - KS 7593 GODDARD KS
2017-04-06 316-330 0–9 XXXwhole prefix which blocks → ONVOY, LLC - KS 205F WICHITA KS
2016-12-05 316-348 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H TOWANDA KS
2016-04-25 316-600 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF KANSAS, LLC - KS 018H EL DORADO KS
2016-02-11 316-333 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF KANSAS, LLC - KS 018H NEWTON KS
2015-11-04 316-666 0XXX1XXX2XXX3XXX6XXX7XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF KANSAS, LLC - KS 018H TOWANDA KS
2015-06-09 316-421 8XXX9XXX which blocks → T-MOBILE USA, INC. 6529 TOWANDA KS
2015-04-24 316-888 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → PEERLESS NETWORK OF KANSAS, LLC - KS 018H TOWANDA KS
2015-04-24 316-999 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF KANSAS, LLC - KS 018H NEWTON KS
2015-04-03 316-272 0–9 XXXall 10 · 8 holders which blocks → PEERLESS NETWORK OF KANSAS, LLC - KS 018H WICHITA KS
2015-04-03 316-515 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - KS 986E WICHITA KS
2014-06-17 316-227 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 NEWTON KS
2013-08-29 316-803 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 NEWTON KS
2013-06-28 316-226 0–9 XXXall 10 · 3 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J WICHITA KS
2013-03-15 316-302 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G WICHITA KS
2012-06-21 316-202 0–9 XXXall 10 · 2 holders which blocks → GIANT COMMUNICATIONS, INC. - KS 5237 WICHITA KS
2009-09-02 316-243 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - KS 205F WICHITA KS
2008-07-07 316-285 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - KS 986E WICHITA KS
2008-04-11 316-249 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 6532 WICHITA KS
2008-03-03 316-395 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C ANDALE KS
2008-01-11 316-347 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WICHITA KS
2008-01-07 316-500 0–9 XXXall 10 · 4 holders which blocks → IDEATEK TELCOM, LLC - KS 014E WICHITA KS
2007-06-05 316-247 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - KS 8995 WICHITA KS
2007-04-05 316-251 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 6532 EL DORADO KS

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.