AS6223 CenturyLink Communications, LLC

CENTURYLINK-MTIPS1-STN - CenturyLink Communications, LLC · registered in the United States

IPv4 addresses2,5603 prefixes · <0.001% of announced IPv4

Rank in United States#5,584largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#19,854of 79,396 networks with IPv4

IPv617 x /482 prefixes

CountryUnited States18,679 ASNs registered there

Open AS6223 in ASN lookup Look up an IP in this network (65.144.124.1) All networks in United States

IPv4 prefixes

All 3 prefixes, in address order.

65.144.124.0/24
199.248.197.0/24
208.68.144.0/21

IPv6 prefixes

All 2 prefixes.

2602:814:9000::/44
2620:0:960::/48

Other ASNs named CenturyLink Communications, LLC

27 other networks use the same organisation name; together with AS6223 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

AS14921CENTURYLINK-LEGACY-EMBARQ-HDRV - CenturyLink Communications, LLC US61,440

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

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

Similar-sized networks in United States

ASNNameIPv4 addresses

AS40138#5581 MDNET - Mach Dilemma, LLC2,560

AS54201#5582 WEWORK-MANAGEMENT-LLC - We Link Networks LLC2,560

AS19050#5583 TIC-DHHS-INTERIOR - U.S. Department of Health & Human Services2,560

AS395403#5585 NS1-INFRA - NSONE Inc2,560

AS402167#5586 AS-NEBIUS-CENTRAL - Nebius Inc.2,560

AS396922#5587 TGRID-AS - Cisco Systems, Inc.2,560

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