NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

7 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 918
NEW CINGULAR WIRELESS PCS, LLC - IL 5
BOOST SUBSCRIBERCO L.L.C. 1
BANDWIDTH.COM CLEC, LLC - OK 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
2011-12-21 918-884-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2011-12-16 918-505-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 BROKENARRW OK
2011-12-16 918-884-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J TULSA OK
2011-12-16 918-884-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J TULSA OK
2011-12-08 918-312-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-12-08 918-312-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-12-08 918-312-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-12-08 918-312-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-12-08 918-312-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-12-08 918-312-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-12-08 918-312-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-12-08 918-312-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-12-08 918-312-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-12-08 918-710-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-12-08 918-927-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-12-08 918-927-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-12-07 918-675-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 COMMERCE OK
2011-12-07 918-888-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F CATOOSA OK
2011-12-07 918-888-8XXX 8000–8999Assigned ONVOY, LLC - OK 409F CATOOSA OK
2011-12-05 918-844-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DRUMRIGHT OK
2011-12-05 918-844-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DRUMRIGHT OK
2011-11-28 918-571-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 SALLISAW OK
2011-11-23 918-884-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2011-11-23 918-884-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2011-11-18 918-312-8XXX 8000–8999Assigned PINE TELEPHONE COMPANY DBA PINE CELL PHONES, INC. 235C TULSA OK
2011-11-18 918-506-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 TAHLEQUAH OK
2011-11-18 918-506-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 TAHLEQUAH OK
2011-11-18 918-506-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 TAHLEQUAH OK
2011-11-17 918-849-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-11-17 918-849-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-11-17 918-849-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-11-17 918-849-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-11-17 918-849-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-11-17 918-849-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-11-17 918-849-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-11-17 918-927-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-11-17 918-927-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-11-17 918-927-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2011-11-16 918-505-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BROKENARRW OK
2011-11-16 918-525-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 TAHLEQUAH OK
2011-11-15 918-927-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 TULSA OK
2011-11-15 918-927-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 TULSA OK
2011-11-15 918-927-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 TULSA OK
2011-11-10 918-212-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 OWASSO OK
2011-11-10 918-315-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 SALLISAW OK
2011-11-09 918-202-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 CATOOSA OK
2011-11-09 918-202-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 CATOOSA OK
2011-11-09 918-202-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 CATOOSA OK
2011-11-09 918-202-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 CATOOSA OK
2011-11-09 918-202-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 CATOOSA OK

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.