NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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, all time — NPA 308
NEW CINGULAR WIRELESS PCS, LLC - IL 57
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 54
QWEST CORPORATION 42
GREAT PLAINS COMMUNICATIONS, INC. 30
CITIZENS TELECOM OF NE LLC DBA FRONTIER COM OF NE 28
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
2020-12-18 308-351 0–9 XXXall 10 · 3 holders which blocks → UNITED STATES CELLULAR - NE 6263 GOTHENBURG NE
2020-10-22 308-475 2XXX4XXX9XXX · 2 holders which blocks → PINPOINT COMMUNICATIONS, INC. - NE 2309 ORLEANS NE
2020-10-22 308-798 2XXX7XXX9XXX · 2 holders which blocks → PINPOINT COMMUNICATIONS, INC. - NE 2309 REPUBLCNCY NE
2020-10-22 308-869 2XXX8XXX9XXX · 2 holders which blocks → PINPOINT COMMUNICATIONS, INC. - NE 2309 STAMFORD NE
2020-10-22 308-929 0XXX4XXX5XXX9XXX · 3 holders which blocks → PINPOINT COMMUNICATIONS, INC. - NE 2309 ALMA NE
2020-10-19 308-373 2XXX7XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SUMNER NE
2020-10-15 308-341 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BURWELL NE
2020-10-15 308-359 2XXX3XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BEAVERCITY NE
2020-10-15 308-361 1XXX3XXX4XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EDISON NE
2020-10-15 308-400 0XXX1XXX4XXX5XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ORD NE
2020-10-15 308-422 2XXX4XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WILSONVL NE
2020-10-08 308-316 1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 POTTER NE
2020-10-08 308-319 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SO ARDMORE NE
2020-10-08 308-342 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WHITECLAY NE
2020-08-25 308-330 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 NO PLATTE NE
2020-08-17 308-800 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H NO JULESBG NE
2020-06-16 308-309 0XXX which blocks → CHARTER IP ENABLED SERVICES, LLC 792K LITCHFIELD NE
2020-06-16 308-312 0XXX which blocks → CHARTER IP ENABLED SERVICES, LLC 792K GIBBON NE
2020-06-16 308-323 0XXX which blocks → CHARTER IP ENABLED SERVICES, LLC 792K RAVENNA NE
2020-05-06 308-302 0XXX1XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 TRYON NE
2020-04-06 308-304 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → UNITED STATES CELLULAR - NE 6263 MINDEN NE
2019-11-19 308-303 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NE 549E CAIRO NE
2019-11-08 308-270 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KEARNEY NE
2019-09-26 308-305 0XXX1XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 PAXTON NE
2019-09-26 308-306 0XXX1XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 WALLACE NE
2019-09-19 308-661 0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → VONAGE AMERICA LLC 197D GRAND IS NE
2019-09-13 308-271 0XXX2XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 SPALDING NE
2019-09-13 308-273 0XXX1XXX2XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 BRULE NE
2019-09-13 308-274 0XXX2XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 CHAPMAN NE
2019-09-13 308-301 0XXX2XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 CEDAR RPDS NE
2019-07-11 308-321 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 GRAND IS NE
2019-05-31 308-267 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → CSC WIRELESS, LLC 425J GRAND IS NE
2019-05-30 308-300 0–9 XXXwhole prefix which blocks → ONVOY, LLC - NE 549E NO JULESBG NE
2018-11-19 308-251 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 KEARNEY NE
2018-11-13 308-937 0XXX3XXX6XXX7XXX · 2 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K HILDRETH NE
2018-11-07 308-231 0XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 SUTHERLAND NE
2017-08-31 308-888 0–9 XXXwhole prefix which blocks → ONVOY, LLC - NE 549E NO JULESBG NE
2017-05-22 308-244 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 PALMER NE
2016-09-21 308-474 3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K BERTRAND NE
2016-02-29 308-299 0XXX1XXX2XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 HYANNIS NE
2015-05-19 308-260 0XXX1XXX2XXX9XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 MINDEN NE
2015-04-21 308-568 0–9 XXXall 10 · 3 holders which blocks → QWEST CORPORATION 9631 NO PLATTE NE
2015-01-09 308-365 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NE 995E NO JULESBG NE
2014-09-30 308-833 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J GRAND IS NE
2014-04-11 308-277 0XXX7XXX9XXX · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 MINDEN NE
2014-01-31 308-252 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 NO PLATTE NE
2013-10-28 308-777 not yet reported which blocks → GREAT PLAINS BROADBAND, INC. - NE 012E MCCOOK NE
2013-08-23 308-248 0–9 XXXall 10 · 7 holders which blocks → GLENWOOD TELECOMMUNICATIONS, INC. - NE 885E HOLDREGE NE
2013-03-04 308-318 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → NUSO, LLC 551G GRAND IS NE
2011-06-21 308-482 0XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 CLARKS NE

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.