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 216
TELEPORT COMMUNICATIONS AMERICA, LLC - OH 1
ONVOY, LLC - OH 1
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
2021-06-02 216-405 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 TERRACE OH
2021-05-10 216-366 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H MONTRSE OH
2021-02-05 216-770 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H CLEVELAND OH
2020-12-21 216-899 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H INDEPNDNCE OH
2020-12-21 216-946 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CLEVELAND OH
2020-12-21 216-966 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H TERRACE OH
2020-11-20 216-998 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CLEVELAND OH
2020-10-06 216-353 0–9 XXXall 10 · 4 holders which blocks → IP HORIZON LLC 515J CLEVELAND OH
2020-09-04 216-343 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F MONTRSE OH
2020-07-02 216-340 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 478J CLEVELAND OH
2020-07-02 216-758 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H INDEPNDNCE OH
2020-06-18 216-677 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H CLEVELAND OH
2020-06-15 216-699 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H TERRACE OH
2020-05-28 216-616 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OH 464C TERRACE OH
2020-05-20 216-329 0–9 XXXall 10 · 2 holders which blocks → CSC WIRELESS, LLC 425J CLEVELAND OH
2020-05-11 216-859 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CLEVELAND OH
2020-04-09 216-327 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2019-12-19 216-306 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F CLEVELAND OH
2019-12-18 216-304 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2019-09-17 216-294 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2019-09-17 216-710 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H CLEVELAND OH
2019-07-30 216-279 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C TERRACE OH
2019-07-30 216-284 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C INDEPNDNCE OH
2019-07-30 216-293 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C CLEVELAND OH
2019-03-19 216-877 0–9 XXXall 10 · 3 holders which blocks → TERRA NOVA TELECOM INC. 145J CLEVELAND OH
2019-02-13 216-270 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F INDEPNDNCE OH
2018-11-13 216-260 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D TERRACE OH
2018-10-23 216-345 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 TERRACE OH
2018-08-10 216-250 0–9 XXXall 10 · 4 holders which blocks → AIRESPRING, INC. 996H CLEVELAND OH
2018-07-30 216-243 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F CLEVELAND OH
2018-02-27 216-238 0–9 XXXall 10 · 3 holders which blocks → EXIANT COMMUNICATIONS LLC 114J CLEVELAND OH
2017-12-04 216-237 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CLEVELAND OH
2017-11-17 216-232 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J INDEPNDNCE OH
2017-08-08 216-290 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C CLEVELAND OH
2017-03-01 216-608 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CLEVELAND OH
2016-12-19 216-414 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 CLEVELAND OH
2016-08-04 216-762 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2016-07-13 216-760 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2016-05-23 216-954 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CLEVELAND OH
2016-03-23 216-716 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CLEVELAND OH
2015-11-19 216-208 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C CLEVELAND OH
2015-10-08 216-727 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2015-08-17 216-666 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OH 464C CLEVELAND OH
2015-08-14 216-540 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 TERRACE OH
2015-06-01 216-356 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J CLEVELAND OH
2015-05-22 216-713 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2015-05-06 216-350 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C CLEVELAND OH
2015-04-21 216-508 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F TERRACE OH
2015-03-24 216-815 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F CLEVELAND OH
2015-03-23 216-465 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OH 464C CLEVELAND OH

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.