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
2012-03-14 918-904-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2012-03-14 918-904-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2012-03-14 918-904-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2012-03-14 918-934-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 TULSA OK
2012-03-14 918-982-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 TULSA OK
2012-03-09 918-822-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TAHLEQUAH OK
2012-03-08 918-889-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2012-03-08 918-889-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2012-03-08 918-889-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2012-03-08 918-889-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2012-03-08 918-889-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2012-03-08 918-889-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2012-03-08 918-889-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2012-03-08 918-889-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2012-03-08 918-889-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2012-03-05 918-856-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2012-03-05 918-884-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2012-03-05 918-884-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2012-03-05 918-936-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2012-03-02 918-936-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J TULSA OK
2012-02-28 918-327-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2012-02-27 918-936-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 TULSA OK
2012-02-27 918-936-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 TULSA OK
2012-02-22 918-320-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MIAMI OK
2012-02-22 918-944-4XXX 4000–4999Assigned METROPCS, INC. 5562 VINITA OK
2012-02-17 918-718-8XXX 8000–8999Assigned BTC BROADBAND, INC. 669B TAHLEQUAH OK
2012-02-16 918-505-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 BROKENARRW OK
2012-02-16 918-926-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 CHECOTAH OK
2012-02-14 918-480-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 SPERRY OK
2012-02-08 918-229-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 SPERRY OK
2012-02-08 918-229-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 SPERRY OK
2012-02-08 918-288-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 SPERRY OK
2012-02-06 918-390-2XXX 2000–2999Assigned NORTHEAST RURAL SERVICES, INC. - OK 945H SALINA OK
2012-01-27 918-235-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 SALLISAW OK
2012-01-24 918-212-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F OWASSO OK
2012-01-13 918-817-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 SALLISAW OK
2012-01-12 918-977-2XXX 2000–2999Assigned SOUTHWESTERN BELL 9533 BARTLESVL OK
2012-01-12 918-977-4XXX 4000–4999Assigned SOUTHWESTERN BELL 9533 BARTLESVL OK
2012-01-12 918-977-5XXX 5000–5999Assigned SOUTHWESTERN BELL 9533 BARTLESVL OK
2012-01-12 918-977-6XXX 6000–6999Assigned SOUTHWESTERN BELL 9533 BARTLESVL OK
2012-01-12 918-977-7XXX 7000–7999Assigned SOUTHWESTERN BELL 9533 BARTLESVL OK
2012-01-12 918-977-8XXX 8000–8999Assigned SOUTHWESTERN BELL 9533 BARTLESVL OK
2012-01-12 918-977-9XXX 9000–9999Assigned SOUTHWESTERN BELL 9533 BARTLESVL OK
2012-01-04 918-283-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C CLAREMORE OK
2012-01-04 918-544-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 MIAMI OK
2012-01-04 918-544-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 MIAMI OK
2012-01-03 918-216-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SAPULPA OK
2012-01-03 918-310-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MUSKOGEE OK
2011-12-28 918-327-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2011-12-21 918-884-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA 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.