NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 618
CENTURYLINK COMMUNICATIONS, LLC 78
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
2016-12-15 618-507-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WOODLAWN IL
2016-01-25 618-538-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WESTVIEW IL
2016-01-13 618-706-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BATCHTOWN IL
2016-01-12 618-238-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J EDGEWOOD IL
2016-01-12 618-347-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SEFTON IL
2016-01-12 618-349-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ST PETER IL
2016-01-12 618-424-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ADDIEVILLE IL
2016-01-12 618-487-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BEECHER CY IL
2016-01-12 618-787-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DUBOIS IL
2015-12-21 618-226-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHATTUC IL
2015-12-21 618-247-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SANDOVAL IL
2015-12-21 618-390-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WOODLAWN IL
2015-12-21 618-461-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ST ELMO IL
2015-12-21 618-762-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WALTONVL IL
2015-12-21 618-836-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHIPMAN IL
2015-12-21 618-934-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SUMMERFLD IL
2015-12-18 618-249-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J IRVINGTON IL
2015-12-18 618-326-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MULBRY GRV IL
2015-12-18 618-370-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MEDORA IL
2015-12-18 618-400-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MILLSTADT IL
2015-12-18 618-425-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PITTSBURG IL
2015-12-18 618-432-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PATOKA IL
2015-12-18 618-493-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HOYLETON IL
2015-12-18 618-494-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J JERSEYVL IL
2015-12-18 618-495-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HOFFMAN IL
2015-12-18 618-588-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEW BADEN IL
2015-12-18 618-653-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KAMPSVILLE IL
2015-12-18 618-669-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J POCAHONTAS IL
2015-12-18 618-701-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HIGHLAND IL
2015-12-18 618-749-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KEYESPORT IL
2015-12-18 618-778-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HETTICK IL
2015-12-17 618-232-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HAMBURG IL
2015-12-17 618-245-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FARINA IL
2015-12-17 618-248-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ALBERS IL
2015-12-17 618-328-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DOW IL
2015-12-17 618-356-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BUNKERHILL IL
2015-12-17 618-362-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DORCHESTER IL
2015-12-17 618-368-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HARDIN IL
2015-12-17 618-376-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FIELDON IL
2015-12-17 618-389-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ASHLEY IL
2015-12-17 618-427-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BROWNSTOWN IL
2015-12-17 618-753-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CHESTERBDG IL
2015-12-17 618-765-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BARTELSO IL
2015-12-17 618-881-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ALTAMONT IL
2015-12-17 618-883-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BRUSSELS IL
2014-06-27 618-481-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BRIGHTON IL
2014-06-24 618-414-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TROY IL
2014-06-19 618-366-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KASKASKIA IL
2014-06-19 618-661-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MCCLURE IL
2014-06-18 618-690-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GREENVILLE 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.