Autonomous System

AS209 — CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC(US)

Last fetched Sun, 30 Aug 2026 05:43:56 GMT

AS209 is an Autonomous System operated by CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC and registered in US. As of Sun, 30 Aug 2026 05:43:56 GMT, it announces 1,621 routed IP prefixes and peers with 247 other Autonomous Systems in the WhisperGraph BGP dataset.

Nutrition Label

Routing footprint

AS209 announces 1,621 distinct routed prefixes. The 25-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.

Peering ecosystem

247 distinct peers via BGP. The first 200 (alphabetical) are listed below.

Peer ASN	Operator	Country
AS10361	BLOOMBERG-NET - Bloomberg, LP	US
AS10370	NORTHWEST-AIRLINES - Northwest Airlines	US
AS10599	MCKESSON - McKesson Corp.	US
AS10695	WAL-MART - Wal-Mart Stores, Inc.	US
AS10780	PURE-STORAGE - Pure Storage, INC.	US
AS10966	ALASKA-AIR - Alaska Airlines, Inc.	US
AS11255	SBT-NET - Screamin' Banshee Technologies	US
AS11275	NBH-HOLDINGS-CORPORATION - National Bank Holdings Corporation	US
AS11651	AS-TKCHOLDINGS-LLC - Centric Group, LLC	US
AS11710	ABBATECH - ABBA TECHNOLOGIES	US
AS11842	REGAL-ENTERTAINMENT-AS - Regal Entertainment Group	US
AS11857	AEGONUSA - Money Services, Inc.	US
AS11985	ASN-SSA - Social Security Administration	US
AS12113	DAWN-FOOD-PRODUCTS - Dawn Food Products, Inc.	US
AS12156	AURORA-COLORADO - City of Aurora Colorado	US
AS12225	CONSUMERINFO1 - Consumerinfo.com, Inc.	US
AS12238	AECOM - AECOM	US
AS13325	STOMI - Michigan State Government	US
AS13485	GCU - Grand Canyon University	US
AS13516	CTCA1336 - Cancer Treatment Centers of America, Inc.	US
AS13548	CHARLESTON-AS - College of Charleston	US
AS13659	INTERTECH - INTERTECH CORPORATION	US
AS13684	ASN-MEDTRONIC-1 - Medtronic, Incorporated	US
AS13750	TNSI-AS - Transaction Network Services, Inc.	US
AS13813	BROADSOFT-INC-NORTH-AMERICA - BroadSoft, Inc.	US
AS13866	CCOUNTRY - Computer Country	US
AS13978	WHBE-OLYMPIA - Washington Health Benefit Exchange	US
AS1401	DBI-CMH1 - DSW Information Technology LLC.	US
AS14010	JACKHENRY - Jack Henry & Associates, Inc.	US
AS14203	JUNIPER-NETWORKS - Juniper Networks, Inc.	US
AS14242	AS-NETBLK-COC - City of Chandler	US
AS14438	USA-CHOICE-OIL-CITY - U S A CHOICE INTERNET SERVICES CO.	US
AS14459	ENTERTAINMENTPARTNERS-AS-A - Entertainment Partners	US
AS1446	TPC-1 - Tutor Perini Corporation	US
AS14622	AS-14622-CHI - GoFIBER	US
AS14848	DOOSAN-INFORMATION-COMMUNICATIONS-AMERICA - DOOSAN INFORMATION AND COMMUNICATIONS AMERICA, LLC	US
AS14899	MOBILEXUSA - MobilexUSA	US
AS14921	CENTURYLINK-LEGACY-EMBARQ-HDRV - CenturyLink Communications, LLC	US
AS15305	SYRINGANETWORKS - Syringa Networks, LLC	US
AS16388	AS-PTI - Protronics Technologies, Inc.	US
AS16417	IRONPORT-SYSTEMS-INC - Cisco Systems Ironport Division	US
AS16491	VIASAT - ViaSat, Inc.	US
AS16546	—	—
AS16741	CITY-OF-LAKELAND - City Of Lakeland	US
AS16756	ABCV16756 - ABC Virtual Communications, Inc.	US
AS16871	MCDONAGHBROTHERS - McDonagh Bros. Inc.	US
AS17094	MUTOMAHA-I - Mutual of Omaha Insurance Company	US
AS17150	AFCU - America First Credit Union	US
AS17242	UNIPAC - UNIPAC Service Corporation	US
AS17385	ORBITEL - Orbitel Communications, LLC	US
AS17402	CENTURYLINK-LEGACY-EMBARQ-CHSK - CenturyLink Communications, LLC	US
AS18500	PACCAR - PACCAR INFORMATION TECHNOLOGY DIVISION	US
AS18530	ISOMEDIA-1 - Isomedia, Inc.	US
AS18693	UCH-CENTRAL - University of Colorado Hospital	US
AS19013	—	—
AS19149	US-SIGNAL-IA01 - US Signal Company, L.L.C.	US
AS19390	JHC - JH Compunet	US
AS19571	ISB-45-19571 - IHC Specialty Benefits, Inc.	US
AS19709	HX-ISP-CHO - Helix Computer Systems, Inc.	US
AS19800	GCPUD-ORG - Grant County Public Utility District	US
AS19886	BOFABROKERDEALERSVCS - Bank of America, National Association	US
AS20145	FCS - FLORIDA CANCER SPECIALISTS, P.L.	US
AS20274	FVCC-AS - Flathead Valley Community College	US
AS20380	20380 - Apex Systems, LLC	US
AS210	WEST-NET-WEST - Utah Education Network	US
AS21660	BAXALTA - Baxalta Incorporated	US
AS21763	ROSSSTORES - Ross Stores Inc.	US
AS21803	CEDAR-NETWORKS - Cedar Networks	US
AS21904	POWER1COM - PowerOne	US
AS22097	KLGATES - K&L Gates, LLP	US
AS22104	GELB - Gelber Group, LLC	US
AS22134	PETSMART - PetSmart LLC	US
AS22230	NETDOCUMENTS-US - NetDocuments	US
AS22317	F5-NETWORKS - F5, Inc.	US
AS22522	ULALAUNCH - United Launch Alliance, LLC	US
AS22523	NMCOURTS-ASN - State of NM Administrative Office of the Courts	US
AS22525	ATALANTA-SOSNOFF - Atalanta Sosnoff Capital, LLC	US
AS22561	CENTURYLINK-LEGACY-LIGHTCORE - CenturyLink Communications, LLC	US
AS23099	SPR - DM Petroleum Operations Company	US
AS23172	PENTAGONFEDERALCU - Pentagon Federal Credit Union	US
AS23173	VOYA-FINANCIAL - CITISTREET	US
AS23255	PACIFICORP - Pacificorp	US
AS25621	ASN-GENESIS - Genesis Health System	US
AS25628	CDP - Collier County Clerk of the Circuit Court	US
AS25992	LVMPD - Las Vegas Metropolitan Police Department	US
AS26088	INLANDTELEPHONE - Inland Internet	US
AS26485	IHG-ASN - Six Continents Hotels, Inc.	US
AS26579	WALMART-DR - Wal-Mart Stores, Inc.	US
AS26791	BADC-CLOUD - Synopsys Inc.	US
AS26848	PFG-ASN-1 - Principal Financial Group, Inc.	US
AS26959	TRIZETTO-AS - Cognizant Trizetto Software Group, INC.	US
AS27011	XSR-ASN - XM Satellite Radio	US
AS27013	GOLDBERG-LINDSAY - Goldberg Lindsay	US
AS27202	CBK-AS - City of Bardstown, Kentucky	US
AS27554	VA - 1010Data, Inc.	US
AS27592	RPI-BGP - Reliable Parts Inc.	US
AS29207	SHIRE-UK-AS - Takeda Pharmaceuticals U.S.A., Inc.	US
AS297	AS297 - National Aeronautics and Space Administration	US
AS29842	ETSU-NET - East Tennessee State University	US
AS29943	UNITEDSOLUTIONS - United Solutions Company	US
AS29989	URM-AS1 - URM Stores Inc	US
AS30089	EASTMANCU-KPT - Eastman Credit Union	US
AS30221	T3COM - T3 Communications, Inc.	US
AS30309	IEXPOSURE-AS - Internet Exposure, Inc.	US
AS30667	WHEELERSLC - WHEELER MACHINERY CO.	US
AS31752	HEI-30-31752 - Heartland Express, Inc. of Iowa	US
AS31825	STARWOOD-VO - Starwood Vacation Ownership	US
AS31865	SWKAS - THE STANLEY WORKS	US
AS32013	CATHOLIC-HEALTH-CARE-WEST - Dignity Health	US
AS32083	OMNISPRING - Omnispring, LLC	US
AS32153	—	—
AS32175	RTD-DENVER - REGIONAL TRANSPORTATION DISTRICT	US
AS32186	FUJIFILM-HLUS - FUJIFILM Manufacturing USA, Inc	US
AS32312	TELECOMSYS-PUBLIC - Telecommunication Systems, Inc.	US
AS32904	KAJEET-ARTERRA-OTARRIS - Arterra Mobility	US
AS33222	AS33222 - Ashley Furniture Industries, Inc.	US
AS33255	HAMDEN-ASN - Hampden-Sydney College	US
AS33350	APS---ARIZONA-PUBLIC-SERVICE-CORPORATION - Arizona Public Service Company	US
AS3356	LEVEL3 - Level 3 Parent, LLC	US
AS3465	JBHUNT - J. B. Hunt Transport Inc.	US
AS3561	CENTURYLINK-LEGACY-SAVVIS - CenturyLink Communications, LLC	US
AS3573	ACCENTURE - Accenture LLP	US
AS36012	HUNTER-COMM - HUNTER COMMUNICATIONS	US
AS36093	PHILLONGDEALERSHIPSASN - Phil Long Dealerships	US
AS36163	HILLCO-LTD - HILLCO, LTD	US
AS36189	NEILMEDAS - Neil Medical Group	US
AS36464	RABO-NA-BGP01 - Rabo Support Services, Inc.	US
AS36467	MAINLINE-INFORMATION-SYSTEMS - Mainline Information Systems Inc.	US
AS36537	BRMIC-MURRAY-01 - Bear River Mutual Insurance Company	US
AS36566	WBAL-TV - Hearst-Argyle Television, Inc.	US
AS36739	COLLIER-COUNTY-GOVERNMENT-BCC - Collier County Government	US
AS36769	WGAL-TV - Hearst-Argyle Television, Inc.	US
AS36811	WIZTECH-INTERNET - Wiztech Internet	US
AS3743	ARCEL-2 - Cleveland Cliffs Steel LLC	US
AS3909	CENTURYLINK-LEGACY-QWEST-VDOC - CenturyLink Communications, LLC	US
AS393355	SISA - SAMSUNG RESEARCH AMERICA, INC.	US
AS393738	CAMEO-GLOBAL - Cameo Solutions	US
AS393856	WGELD-ASN - City of Westfield (Gas & Electric Light Department)	US
AS393860	AVISYSTEMS - AVI SYSTEMS INC	US
AS393863	DMA-IND-DC - DMA	US
AS393917	CVE - Cache Valley Electric Company	US
AS394046	JWKFO - JELD WEN	US
AS394316	ALTRA - Altra Federal Credit Union	US
AS394329	UT-COURTS - STATE OF UTAH COURTS	US
AS394515	MKT-CH2-NOC - Market Track LLC	US
AS394575	AFS-IEP - Accenture Federal Services LLC	US
AS394709	HE-AS1 - HealthEdge Software, Inc.	US
AS395030	TLC - The Lamar Company, LLC	US
AS395036	CITYOFSANIBEL - City of Sanibel	US
AS395051	POWDR-CORP - POWDR CORP	US
AS395133	MEDQUEST - MedQuest Associates, Inc.	US
AS395143	FMG-AS-1 - Fire Mountain Gems and Beads Inc.	US
AS395296	MSFA - MSFA	US
AS395617	PLYMOUTH - Plymouth Poultry Company	US
AS395736	CARY-STREET-PARTNERS-LLC - Cary Street Partners	US
AS395857	MIHS - Maricopa Integrated Health System	US
AS395918	SIL-MAIN-AS - Sandestin Investments LLC	US
AS396135	AS-WOODMENLIFE-1 - Woodmen of the World Life Insurance Society	US
AS396175	PSC - PEGASUS SOLUTIONS COMPANIES	US
AS396312	FHC - Richmond Memorial Hospital	US
AS396314	—	—
AS396402	MULTICARE-HEALTH-SYSTEM - MultiCare Health System	US
AS396908	LAURENS-TECHNOLOGIES-INTERNET-SERVICES - Laurens Technologies Internet Services	US
AS396951	TC-EQ-DA3 - TransCanada Pipelines Limited	US
AS396954	ZSS - The Root Group, Inc.	US
AS396960	TC-EQ-CH2 - TransCanada Pipelines Limited	US
AS397041	SEVERANCE-CO-LIGHTGIG - Lightgig Communications LLC	US
AS397045	DBMGMT-AS1 - D. Brown Management	US
AS397167	PHS-NM - Presbyterian Healthcare Services	US
AS397174	APPLIED-PREDICTIVE-TECHNOLOGIES - Applied Predictive Technologies, Inc.	US
AS397261	ENDELL-ST - H CLUB LOS ANGELES	US
AS397329	CSCI-3662 - Central Security Communications, Inc.	US
AS397393	REHNAS01 - A W Rehn & Associates Inc.	US
AS397524	NRM-NORTHRIVERMIDSTREAMINC-01 - Northriver Midstream Inc.	CA
AS397691	CGMUS - CompuGroup Medical Inc.	US
AS398164	WHITEFISHCU-CO - WHITEFISH CREDIT UNION ASSOCIATION	US
AS398241	CELLNETIX - CELLNETIX LABS LLC	US
AS398243	HE-US-01 - Holmes Electric Inc.	US
AS398331	1FBUSA-PROD - 1st Financial Bank USA	US
AS398459	ROGUECU-ORG-01 - Rogue Credit Union	US
AS398806	VIS-2020-01 - Valli Information Systems, Inc	US
AS399012	DART-ASN - Des Moines Regional Transit Authority (DART)	US
AS399184	COLVILLE-ASN-01 - Confederated Tribes of the Colville Reservation	US
AS399210	TSAUSWPDCPHX - The Salvation Army	US
AS399965	UTAH-JAZZ - Jazz Basketball Investors LLC	US
AS400008	ZOOT - Zoot Enterprises, Inc.	US
AS400068	LION-TECHNOLOGY-570 - LION TECHNOLOGY INC	US
AS400134	BON-ASN-01 - Balance of Nature	US
AS400383	HUMBLE-BRIDGER-1 - Denson Technologies	US
AS400988	SLCO-ASN-01 - Salt Lake County	US
AS4015	CENTURYLINK-LEGACY-QWEST-SPA-OMAHA - CenturyLink Communications, LLC	US
AS401668	ROGERSNETWORKS - IPM Computers LLC	US
AS401915	GSDRE2ASN - Garfield School District No. RE-2	US
AS402260	DR-ASN01 - University of Colorado Medicine	US
AS40408	KOUNT-INC - Kount, Inc.	US
AS40451	ASN-BOP - Board of Pensions of the Evangelical Lutheran Church in America	US
AS40766	EQUINOX-PAYMENTS - Equinox Payments	US
AS40879	LOS-ALAMOS-COUNTY - Incorporated County of Los Alamos	US
AS4211	ASN-MARICOPA1 - Maricopa County Government	US
AS4296	CENTURYLINK-MTIPS3-BUR - CenturyLink Communications, LLC	US

Blast radius

Count of dependent hostnames if AS209 disappeared from the routing table.

≥518,075 hostnames depend on this network.Verified lower bound — counted across 50 of 1,622 announced prefixes. The true total is at least this many. Snapshot Tue, 25 Aug 2026 07:00:52 GMT.

MOAS / hijack watch

Prefixes routed by AS209 that another Autonomous System also announces. A non-empty list is one of the strongest BGP-hijack signals available without active probes.

Prefix	Conflicting ASN	Operator
198.204.120.0/24	AS54081	GJCITY-01 - City of Grand Junction
198.204.121.0/24	AS54081	GJCITY-01 - City of Grand Junction
198.204.122.0/24	AS54081	GJCITY-01 - City of Grand Junction

Threat posture

Pivot deeper into the graph from AS209.

Cypher and MCP

Reproduce the headline metric directly against graph.whisper.security:

MATCH (a:ASN {name: "AS209"})-[:HAS_NAME]->(n:ASN_NAME)
OPTIONAL MATCH (a)-[:HAS_COUNTRY]->(c:COUNTRY)
RETURN a.name AS asn, n.name AS operator, c.name AS country

Or query Whisper from your own LLM workflow via the Whisper MCP server.