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Autonomous System

AS12271 — TWC-12271-NYC - Charter Communications Inc(US)

Last fetched

AS12271 is an Autonomous System operated by TWC-12271-NYC - Charter Communications Inc and registered in US. As of Sun, 06 Sep 2026 12:47:37 GMT, it announces 119 routed IP prefixes and peers with 50 other Autonomous Systems in the WhisperGraph BGP dataset.

Nutrition Label

WHISPER CANON · AS12271Routing diversity10.0/10Peering density6.8/10MOAS conflict✓ noneThreat-feed listingsWHOIS transparencyResolver footprintcanon.whisper.security/asn/12271

Routing footprint

AS12271 announces 119 distinct routed prefixes. The 25-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.

Peering ecosystem

50 distinct peers via BGP. The first 50 are listed below.

Peer ASNOperatorCountry
AS13975NYCPM - NYCPMUS
AS14460HORIZON - Horizon Media, Inc.US
AS14465HITN-AS-1 - HITNUS
AS14478RECURSE-CENTER - Recurse CenterUS
AS16770ASTGEN - Astoria Generating Company, L.P.US
AS18564SJU149068 - St. John's University, New YorkUS
AS18694SDWARREN - Sappi Fine Paper North AmericaUS
AS19794CEMENTWORKS - The Cementworks LLCUS
AS19796SHUBERT - Shubert Organization, Inc.US
AS20252JSIWMC - Joan and Sanford I. Weill Medical College and Graduate School of Medical Sciences of Cornell UniversityUS
AS22252AS22252 - The City of New YorkUS
AS22303NEWPALTZEDU - State University of New York at New PaltzUS
AS23097COHEN-STEERS - COHEN & STEERS CAPITAL MGMT., INC.US
AS23325MCL-ASN - Magnitude Capital, LLCUS
AS25669TOWERPRODUCTS - MARKERTEK VIDEO SUPPLYUS
AS25816TOURO - Touro CollegeUS
AS25891SVA-ANS - School Of Visual Arts, Inc.US
AS26738DEERFIELD - Deerfield Partners, L.P.US
AS27185DHS-INTERNET - Danbury Hospital - ITGUS
AS30012ASN-UNIVERSAL-MUSIC-GROUP-INC - Universal Music Group, INC.US
AS30339DGLAW - Davis & Gilbert LLPUS
AS31869LL-BEAN - LL BeanUS
AS32730NAHQPU - LG CNS America Inc.US
AS33010INTERCHURCH - The Interchurch CenterUS
AS33428NHS-39AS - The New-York Historical SocietyUS
AS36100MTC-BROADBAND - MTC Broadband, Inc.US
AS393562MOB-ASN - Mobilitie, LLCUS
AS3935699-11-MEMORIAL - 9/11 MEMORIALUS
AS393753AS393753 - The Brooklyn Hospital CenterUS
AS395060MACMILLAN-PUBLISHERS - Macmillan Publishers IncUS
AS395095GARNET-HEALTH - Orange Regional Medical CenterUS
AS395359ITH-AS-1 - InTouch HealthUS
AS397352MEDISYS-36 - Medisys Health Network, Inc.US
AS397595MTAPD-LIC - MTAPDUS
AS400392EMPIRE-1 - Empire Resorts, Inc.US
AS400508JS-ASN-01 - The Juilliard SchoolUS
AS40170MTR0-01 - Intermetro Communications, Inc.US
AS401827UNITED NATIONS FEDERAL CREDIT UNION - UNFCUUS
AS402355VISENTRY-NET - VisentryUS
AS402494BARTLETTDAIRY-JFK-SDWAN - BartlettUS
AS40362CHAPIN-AS - Chapin SchoolUS
AS46765ASN1 - Liberum Capital Inc.US
AS5091STRIPE - Stripe, Inc.US
AS53693RAA-NYC-NET - Ralph Appelbaum Associates, Inc.US
AS54113FASTLY - Fastly, Inc.US
AS54226SUNY-OPTOMETRY - SUNY College of OptometryUS
AS5512337589 - Brilliant Jewelers/MJJ Inc.US
AS6292MTAPD-GB - MTAPDUS
AS6453AS6453 - TATA COMMUNICATIONS (AMERICA) INCUS
AS7843TWC-7843-BB - Charter Communications IncUS

Blast radius

Count of dependent hostnames if AS12271 disappeared from the routing table.

Blast radius: Computing — check back later. The precompute pipeline refreshes this panel within a few days.

MOAS / hijack watch

Prefixes routed by AS12271 that another Autonomous System also announces. A non-empty list is one of the strongest BGP-hijack signals available without active probes.

No active MOAS conflicts. Every prefix announced by AS12271 is unique to AS12271 in the current routing snapshot.

Threat posture

Related pages

Pivot deeper into the graph from AS12271.

Cypher and MCP

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

MATCH (a:ASN {name: "AS12271"})-[: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.