NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 815
CENTURYLINK COMMUNICATIONS, LLC 132
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
2016-09-07 815-554-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J E DUBUQUE IL
2016-07-05 815-379-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WALNUT IL
2016-07-05 815-628-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J W BROOKLYN IL
2016-07-05 815-699-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WYANET IL
2016-07-01 815-437-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PUTNAM IL
2016-07-01 815-454-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHEFFIELD IL
2016-07-01 815-646-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TISKILWA IL
2016-06-30 815-340-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LA MOILLE IL
2016-06-30 815-376-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OHIO IL
2016-06-30 815-615-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MENDOTA IL
2016-06-30 815-799-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MANLIUS IL
2016-06-29 815-643-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DOVER IL
2016-06-29 815-894-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LADD IL
2016-06-29 815-925-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HENNEPIN IL
2016-06-28 815-497-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J COMPTON IL
2016-06-28 815-760-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BUREAU IL
2016-01-21 815-270-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROSCOE IL
2016-01-21 815-335-0XXX 0000–0999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WINNEBAGO IL
2016-01-21 815-367-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WINSLOW IL
2016-01-21 815-800-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J POPLAR GRV IL
2016-01-21 815-845-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SCALESMOND IL
2016-01-21 815-947-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J STOCKTON IL
2016-01-19 815-247-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SEWARD IL
2016-01-19 815-789-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ORANGEVL IL
2016-01-19 815-957-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROCKTON IL
2016-01-14 815-248-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DURAND IL
2016-01-14 815-362-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GERMAN VLY IL
2016-01-14 815-369-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LENA IL
2016-01-14 815-597-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GARDENPRRI IL
2016-01-14 815-618-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FREEPORT IL
2016-01-14 815-858-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ELIZABETH IL
2016-01-14 815-865-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DAVIS IL
2016-01-14 815-938-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FORRESTON IL
2015-12-22 815-580-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CHERRY VLY IL
2015-12-22 815-594-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J APPLERIVER IL
2015-11-25 815-239-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PECATONICA IL
2015-05-26 815-201-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHERIDAN IL
2015-05-26 815-269-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DANFORTH IL
2015-05-26 815-339-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRANVILLE IL
2015-05-26 815-428-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MARTINTON IL
2015-05-26 815-429-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHELDON IL
2015-05-26 815-435-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BEAVERVL IL
2015-05-26 815-457-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CISSNAPARK IL
2015-05-26 815-473-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WOODLAND IL
2015-05-26 815-486-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DONOVAN IL
2015-05-26 815-627-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PAW PAW IL
2015-05-26 815-648-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HEBRON IL
2015-05-26 815-682-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J STOCKLAND IL
2015-05-26 815-694-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CLIFTON IL
2015-05-26 815-697-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CHEBANSE IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.