AS14921 CenturyLink Communications, LLC

CENTURYLINK-LEGACY-EMBARQ-HDRV - CenturyLink Communications, LLC · registered in the United States

IPv4 addresses61,44031 prefixes · 0.002% of announced IPv4

Rank in United States#1,389largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#3,619of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS14921 in ASN lookup Look up an IP in this network (63.165.119.1) All networks in United States

IPv4 prefixes

All 31 prefixes, in address order.

63.165.119.0/24
65.40.176.0/21
65.40.220.0/22
65.40.224.0/22
67.76.144.0/21
67.232.160.0/21
67.235.48.0/22
67.237.96.0/20
67.237.132.0/22
67.237.136.0/21
67.237.224.0/19
69.34.216.0/22
69.68.252.0/22
69.69.94.0/23
71.0.48.0/21
71.1.128.0/21
71.2.216.0/22
71.48.176.0/21
71.50.0.0/20
71.53.64.0/20
74.4.176.0/21
76.2.0.0/19
138.210.78.0/23
138.210.82.0/24
138.210.120.0/22
138.210.128.0/22
138.210.168.0/21
205.162.192.0/21
205.162.200.0/24
205.162.203.0/24
205.162.204.0/22

Other ASNs named CenturyLink Communications, LLC

27 other networks use the same organisation name; together with AS14921 they announce 24,368,896 IPv4 addresses.

ASNNameIPv4 addresses

AS209CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC US15,739,648

AS3561CENTURYLINK-LEGACY-SAVVIS - CenturyLink Communications, LLC US6,397,952

AS22561CENTURYLINK-LEGACY-LIGHTCORE - CenturyLink Communications, LLC US1,228,800

AS2379CENTURYLINK-LEGACY-EMBARQ-WNPK - CenturyLink Communications, LLC US547,840

AS11398CENTURYLINK-LEGACY-EMBARQ-LVGS - CenturyLink Communications, LLC US121,088

AS17402CENTURYLINK-LEGACY-EMBARQ-CHSK - CenturyLink Communications, LLC US68,864

AS6222CENTURYLINK-LEGACY-EMBARQ-CLTN - CenturyLink Communications, LLC US59,136

AS4911CENTURYLINK-LEGACY-QWEST-SPA-MARION - CenturyLink Communications, LLC US16,384

AS16941CENTURYLINK-LEGACY-FUSEPOINT-CTS-CANADA-POP - CenturyLink Communications, LLC US15,616

AS7359CENTURYLINK-SPA-ZUNI - CenturyLink Communications, LLC US14,592

AS4015CENTURYLINK-LEGACY-QWEST-SPA-OMAHA - CenturyLink Communications, LLC US14,336

AS3910CENTURYLINK-EUROPE-LEGACY-QWEST - CenturyLink Communications, LLC US13,824

AS22186CENTURYLINK-LEGACY-EMBARQ-KSGRNR - CenturyLink Communications, LLC US13,312

AS393789CENTURYLINK-CHIA-PROJECT - CenturyLink Communications, LLC US13,312

AS23126CENTURYLINK-CLEC-VARIOUS-SHARED-USE-AND-LOCATIONS - CenturyLink Communications, LLC US8,960

AS3909CENTURYLINK-LEGACY-QWEST-VDOC - CenturyLink Communications, LLC US6,912

AS4282CENTURYLINK-TSDS-FLFTMY - CenturyLink Communications, LLC US5,888

AS4283CENTURYLINK-TSDS-LSVG - CenturyLink Communications, LLC US4,864

AS4284CENTURYLINK-TSDS-FLTLHS - CenturyLink Communications, LLC US4,608

AS13787CENTURYLINK-LEGACY-EMBARQ-JCTY - CenturyLink Communications, LLC US3,328

AS6223CENTURYLINK-MTIPS1-STN - CenturyLink Communications, LLC US2,560

AS5778CENTURYLINK-LEGACY-EMBARQ-RCMT - CenturyLink Communications, LLC US1,792

AS7191CENTURYLINK-PRISM - CenturyLink Communications, LLC US1,536

AS4297CENTURYLINK-MTIPS4-HLR - CenturyLink Communications, LLC US1,024

AS7988CENTURYLINK-SPA-SINGAPORE - CenturyLink Communications, LLC US768

AS6224CENTURYLINK-MTIPS2-CHI - CenturyLink Communications, LLC US256

AS16835CENTURYLINK-LEGACY-MR-MEBLANE-AND-RCMT - CenturyLink Communications, LLC US256

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ASNNameIPv4 addresses

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AS22644#1387 TJUH - Thomas Jefferson University Hospitals, Inc.61,440

AS26462#1388 AS-GENESEO - The State University of New York College at Geneseo61,440

AS15119#1390 SOUTHERN-ILLINOIS-UNIVERSITY - Southern Illinois University Carbondale61,440

AS53257#1391 ASN1 - The Citadel61,440

AS55002#1392 DEFENSE-NET - F5, Inc.61,184

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources