NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

3 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 681
NEW CINGULAR WIRELESS PCS, LLC - DC 3
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
2022-01-25 681-425 0XXX1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F PETERSTOWN WV
2022-01-20 681-370 0XXX which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F RIVESVILLE WV
2022-01-20 681-420 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F JANE LEW WV
2022-01-20 681-440 0XXX which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F FARMINGTON WV
2022-01-04 681-406 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TERRA ALTA WV
2021-12-30 681-407 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LOGAN WV
2021-12-14 681-418 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F LEWISBURG WV
2021-12-14 681-990 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H CHRLSTNZN1 WV
2021-11-19 681-276 0XXX1XXX2XXX3XXX5XXX6XXX7XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F BUCKHANNON WV
2021-11-19 681-309 0XXX2XXX6XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F GRAFTON WV
2021-11-12 681-396 7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MARLINTON WV
2021-11-12 681-413 1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HILLSBORO WV
2021-11-09 681-469 0XXX6XXX7XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F SHINNSTON WV
2021-11-05 681-386 0XXX1XXX4XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F RIDGELEY WV
2021-11-05 681-394 0XXX3XXX4XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F SOPHIA WV
2021-11-03 681-372 0XXX1XXX2XXX3XXX6XXX7XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F RAVENSWOOD WV
2021-11-03 681-431 0XXX1XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F WEST UNION WV
2021-10-18 681-391 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRKRSBGZN1 WV
2021-10-18 681-410 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 HNTNGTNZN2 WV
2021-10-04 681-360 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
2021-09-28 681-380 2XXX3XXX4XXX9XXX · 3 holders which blocks → SHENTEL COMMUNICATIONS, LLC. - WV 489F PHILIPPI WV
2021-09-09 681-305 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 BECKLEY WV
2021-09-09 681-465 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ELKINS WV
2021-09-09 681-544 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J CHARLES TN WV
2021-09-09 681-733 0–9 XXXall 10 · 3 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J PRKRSBGZN1 WV
2021-09-09 681-833 0–9 XXXall 10 · 5 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J CHRLSTNZN1 WV
2021-09-09 681-877 7XXX8XXX9XXX · 2 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J BLUEFIELD WV
2021-09-09 681-880 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J WHELNGZON1 WV
2021-07-29 681-350 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J KINGWOOD WV
2021-07-26 681-417 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRKRSBGZN1 WV
2021-07-22 681-389 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MARTINSBG WV
2021-07-16 681-219 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
2021-06-21 681-376 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELNYX LLC 073H MORGANTOWN WV
2021-06-15 681-371 0XXX1XXX · 2 holders which blocks → ONVOY, LLC - WV 449F PIEDMONT WV
2021-06-15 681-644 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H HINTON WV
2021-06-15 681-684 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H HNTNGTNZN1 WV
2021-06-15 681-770 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H HURRICANE WV
2021-06-15 681-782 2XXX3XXX4XXX7XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H LEON WV
2021-06-15 681-788 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H MAN WV
2021-06-01 681-415 0XXX1XXX2XXX3XXX6XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F SISTERSVL WV
2021-05-14 681-383 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F PTPLEASANT WV
2021-05-12 681-379 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 7 holders which blocks → METROPCS, INC. 5562 KEYSER WV
2021-05-06 681-466 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H CHRLSTNZN2 WV
2021-05-06 681-488 0XXX4XXX5XXX8XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H BRADSHAW WV
2021-05-06 681-686 2XXX6XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H DUTCHRIDGE WV
2021-05-05 681-335 0XXX2XXX3XXX4XXX5XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H ALDERSON WV
2021-05-05 681-388 0XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H APPLEGROVE WV
2021-05-04 681-373 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
2021-04-27 681-401 4XXX6XXX7XXX which blocks → ONVOY SPECTRUM, LLC 624H BERKELYSPG WV
2021-04-24 681-210 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - WV 449F BLUEFIELD WV

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.