NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

26 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 636
ONVOY, LLC - MO 24
EXIANT COMMUNICATIONS LLC 1
BANDWIDTH.COM CLEC, LLC - MO 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
2008-03-18 636-534-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 CHESTERFLD MO
2008-03-03 636-284-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARVESTER MO
2008-02-27 636-748-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CEDAR HILL MO
2008-02-19 636-221-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 WASHINGTON MO
2008-02-19 636-222-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 CEDAR HILL MO
2008-01-25 636-856-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WENTZVILLE MO
2008-01-15 636-487-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST CHARLES MO
2008-01-15 636-487-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST CHARLES MO
2008-01-08 636-579-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHESTERFLD MO
2008-01-04 636-229-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J HARVESTER MO
2007-12-31 636-614-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OFALLON MO
2007-12-17 636-875-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST PETERS MO
2007-11-23 636-717-3XXX 3000–3999Assigned SOUTHWESTERN BELL 9533 FENTON MO
2007-11-20 636-698-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 WENTZVILLE MO
2007-11-16 636-209-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FSSCRSTLCY MO
2007-11-16 636-209-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FSSCRSTLCY MO
2007-11-16 636-290-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TROY MO
2007-11-16 636-375-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HIGH RIDGE MO
2007-11-16 636-375-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HIGH RIDGE MO
2007-11-16 636-744-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 UNION MO
2007-11-16 636-744-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 UNION MO
2007-11-16 636-744-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 UNION MO
2007-11-13 636-755-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J DARDENNE MO
2007-11-02 636-290-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TROY MO
2007-10-25 636-614-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OFALLON MO
2007-10-18 636-387-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST PETERS MO
2007-10-18 636-614-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 OFALLON MO
2007-10-18 636-755-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 DARDENNE MO
2007-10-16 636-284-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARVESTER MO
2007-09-21 636-366-3XXX 3000–3999Assigned BRIGHTSPEED OF MISSOURI, LLC 9787 MOSCOW ML MO
2007-09-21 636-695-5XXX 5000–5999Assigned BRIGHTSPEED OF MISSOURI, LLC 9787 DARDENNE MO
2007-09-21 636-798-5XXX 5000–5999Assigned BRIGHTSPEED OF MISSOURI, LLC 9787 DEFIANCE MO
2007-09-21 636-887-9XXX 9000–9999Assigned BRIGHTSPEED OF MISSOURI, LLC 9787 WENTZVILLE MO
2007-09-17 636-221-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WASHINGTON MO
2007-09-14 636-388-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 UNION MO
2007-09-14 636-388-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 UNION MO
2007-09-14 636-542-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OFALLON MO
2007-09-14 636-542-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OFALLON MO
2007-09-13 636-680-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J FENTON MO
2007-09-07 636-221-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 WASHINGTON MO
2007-09-05 636-235-3XXX 3000–3999Assigned BRIGHTSPEED OF MISSOURI, LLC 9787 WARRENTON MO
2007-08-23 636-221-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 WASHINGTON MO
2007-08-07 636-698-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 WENTZVILLE MO
2007-07-31 636-534-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J CHESTERFLD MO
2007-07-26 636-697-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ST PETERS MO
2007-07-25 636-887-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J WENTZVILLE MO
2007-07-17 636-395-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ST CHARLES MO
2007-07-17 636-395-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ST CHARLES MO
2007-07-11 636-322-8XXX 8000–8999Assigned METROPCS, INC. 5562 ST CLAIR MO
2007-07-11 636-461-3XXX 3000–3999Assigned SOUTHWESTERN BELL 9533 IMPERIAL MO

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.