NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, all time — NPA 717
VERIZON PENNSYLVANIA, INC. 121
BRIGHTSPEED OF PENNSYLVANIA, LLC 80
NEW CINGULAR WIRELESS PCS, LLC - DC 77
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 72
LEVEL 3 COMMUNICATIONS, LLC - PA 65
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 NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2024-04-25 717-223 2XXX3XXX7XXX8XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J STEWARTSTN PA
2021-11-24 717-280 0–9 XXXall 10 · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J HARISBGZN1 PA
2021-03-25 717-750 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H DELTA PA
2020-01-21 717-981 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HARISBGZN1 PA
2018-06-28 717-973 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F MIFFLINTN PA
2017-12-28 717-908 0–9 XXXall 10 · 6 holders which blocks → AIRUS, INC. - PA 438H HARISBGZN1 PA
2017-08-30 717-998 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D HARISBGZN1 PA
2017-07-27 717-996 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 478J HARISBGZN1 PA
2017-07-26 717-995 0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → METROPCS, INC. 5562 HERSHEY PA
2017-07-07 717-990 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANDISVL PA
2017-06-15 717-936 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J NEWHOLLAND PA
2017-06-05 717-934 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H HARISBGZN1 PA
2017-05-18 717-912 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F LOGANVILLE PA
2017-05-09 717-210 0–9 XXXall 10 · 6 holders which blocks → COMMIO, LLC 939H HARISBGZN1 PA
2017-05-05 717-890 0XXX1XXX2XXX8XXX9XXX · 4 holders which blocks → TELNYX LLC 073H MIDDLETOWN PA
2017-04-13 717-670 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J GRATZ PA
2017-04-13 717-680 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW OXFORD PA
2017-04-13 717-956 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E HARISBGZN1 PA
2017-03-16 717-864 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - PA 547E WRIGHTSVL PA
2017-03-16 717-931 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E DOVER PA
2017-01-31 717-710 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2017-01-04 717-621 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 LANCASTER PA
2016-11-16 717-550 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 MECHANCSBG PA
2016-11-16 717-607 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEWISTOWN PA
2016-10-25 717-251 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J CHAMBERSBG PA
2016-10-10 717-551 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J HARISBGZN1 PA
2016-10-06 717-415 0–9 XXXall 10 · 4 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 COLUMBIA PA
2016-08-10 717-804 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RED LION PA
2016-07-28 717-663 0–9 XXXall 10 · 4 holders which blocks → CTSI, INC. - PA 7513 LANCASTER PA
2016-07-25 717-807 0XXX2XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → WINDSTREAM D&E, INC. 0165 LITITZ PA
2016-07-22 717-906 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J CARLISLE PA
2016-07-08 717-941 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2016-06-02 717-803 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANCASTER PA
2016-05-26 717-740 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LANCASTER PA
2016-05-10 717-356 0–9 XXXall 10 · 5 holders which blocks → VERIZON NORTH, INC. - PA 0169 YORK PA
2016-05-09 717-714 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 YORK PA
2016-03-24 717-716 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 MOUNTVILLE PA
2016-03-16 717-470 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E JONESTOWN PA
2016-03-16 717-970 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - PA 547E MYERSTOWN PA
2016-03-03 717-276 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E ANNVILLE PA
2016-03-03 717-297 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - PA 547E MT GRETNA PA
2016-02-09 717-696 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - PA 547E LANCASTER PA
2016-01-08 717-797 0–9 XXXall 10 · 4 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 HANOVER PA
2016-01-06 717-678 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2015-12-18 717-837 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 QUARRYVL PA
2015-12-16 717-894 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E YORK PA
2015-12-11 717-727 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E HARISBGZN1 PA
2015-11-12 717-857 0–9 XXXall 10 · 8 holders which blocks → COMCAST IP PHONE, LLC 318J HARISBGZN1 PA
2015-11-02 717-954 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEBANON PA
2015-09-15 717-640 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 NEW OXFORD PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.