AS4015 CenturyLink Communications, LLC

CENTURYLINK-LEGACY-QWEST-SPA-OMAHA - CenturyLink Communications, LLC · registered in the United States

IPv4 addresses14,3364 prefixes · <0.001% of announced IPv4

Rank in United States#2,515largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#7,548of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountryUnited States18,679 ASNs registered there

Open AS4015 in ASN lookup Look up an IP in this network (148.156.208.1) All networks in United States

IPv4 prefixes

All 4 prefixes, in address order.

148.156.208.0/21
155.70.16.0/20
155.70.48.0/20
155.70.64.0/20

IPv6 prefixes

All 1 prefix.

2001:428:b21::/48

Other ASNs named CenturyLink Communications, LLC

27 other networks use the same organisation name; together with AS4015 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

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

Similar-sized networks in United States

ASNNameIPv4 addresses

AS26793#2512 ICS-LLC - ICS Advanced Technologies14,336

AS21699#2513 IO - IO INC14,336

AS395337#2514 MACST-VEGAS - MacStadium, Inc.14,336

AS1208#2516 DNIC-AS-01208 - United States Department of Defense (DoD)14,336

AS1423#2517 RAINBOW-RTCA - Rainbow Communications, L.L.C.14,336

AS4211#2518 ASN-MARICOPA1 - Maricopa County Government14,336

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