NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 618
NEW CINGULAR WIRELESS PCS, LLC - IL 2
EXIANT COMMUNICATIONS LLC 2
AHOI LLC 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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2019-06-29 618-787-5XXX 5000–5999Assigned ONVOY, LLC 224C DUBOIS IL
2019-06-29 618-881-2XXX 2000–2999Assigned ONVOY, LLC 224C ALTAMONT IL
2019-06-29 618-881-3XXX 3000–3999Assigned ONVOY, LLC 224C ALTAMONT IL
2019-06-29 618-892-5XXX 5000–5999Assigned ONVOY, LLC 224C FARINA IL
2019-06-29 618-892-6XXX 6000–6999Assigned ONVOY, LLC 224C FARINA IL
2019-06-17 618-861-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHESTER IL
2019-06-10 618-539-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E FREEBURG IL
2019-06-10 618-666-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E COLLINSVL IL
2019-05-23 618-308-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 MCLEANSBO IL
2019-05-23 618-745-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 MOUNDS IL
2019-05-22 618-467-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E ALTON IL
2019-05-15 618-320-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 OLNEY IL
2019-04-29 618-577-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E BREESE IL
2019-04-24 618-368-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E HARDIN IL
2019-04-23 618-515-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E E ST LOUIS IL
2019-04-11 618-668-0XXX 0000–0999Assigned ONVOY, LLC 224C GOLCONDA IL
2019-04-11 618-800-5XXX 5000–5999Assigned ONVOY, LLC 224C EDWARDSVL IL
2019-04-05 618-619-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ALTON IL
2019-04-04 618-422-2XXX 2000–2999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F MARION IL
2019-03-15 618-539-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 FREEBURG IL
2019-03-04 618-414-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 TROY IL
2019-03-04 618-701-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 HIGHLAND IL
2019-02-26 618-422-8XXX 8000–8999Assigned ONVOY, LLC 224C MARION IL
2019-02-26 618-422-9XXX 9000–9999Assigned ONVOY, LLC 224C MARION IL
2019-02-26 618-479-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 SALEM IL
2019-02-26 618-545-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 CENTRALIA IL
2019-02-26 618-715-1XXX 1000–1999Assigned ONVOY, LLC 224C HARRISBURG IL
2019-02-26 618-715-7XXX 7000–7999Assigned ONVOY, LLC 224C HARRISBURG IL
2019-02-22 618-432-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 PATOKA IL
2019-02-22 618-472-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 MT VERNON IL
2019-02-14 618-403-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 FLORA IL
2019-02-11 618-417-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MT VERNON IL
2019-01-29 618-312-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E SALEM IL
2019-01-29 618-582-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E NEW ATHENS IL
2019-01-22 618-699-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 VANDALIA IL
2019-01-08 618-440-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MARION IL
2019-01-03 618-607-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E O FALLON IL
2019-01-03 618-954-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2019-01-03 618-971-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2018-12-27 618-239-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E BELLEVILLE IL
2018-12-27 618-701-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E HIGHLAND IL
2018-12-27 618-825-1XXX 1000–1999Assigned METROPCS, INC. 5562 BELLEVILLE IL
2018-12-27 618-825-8XXX 8000–8999Assigned METROPCS, INC. 5562 BELLEVILLE IL
2018-12-20 618-272-0XXX 0000–0999Assigned SHAWNEELEC, INC. 458H RIDGWAY IL
2018-12-19 618-414-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E TROY IL
2018-12-18 618-961-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 GLENCARBON IL
2018-12-06 618-217-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WOOD RIVER IL
2018-12-05 618-626-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 DU QUOIN IL
2018-12-03 618-421-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROBINSON IL
2018-12-03 618-995-7XXX 7000–7999Assigned SHAWNEELEC, INC. 458H GOREVILLE IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.