HomeASN LookupAS11351

AS11351 TWC-11351-NORTHEAST - Charter Communications Inc

🇺🇸
ARINassigned
Announced Prefixes (BGP)
154total
141 IPv413 IPv6
IPv4 Addresses
Allocated (RIR)988,672
Announced (BGP)4.5M
IPv6 Addresses
Allocated (RIR)7.9×10²⁸
Announced (BGP)1.5×10³⁰
Prefix Limit (IPv4)
1,000
Prefix Limit (IPv6)
50
Country
🇺🇸 US
RIR
ARIN
Status
assigned
Allocated
1998-07-14

Routing hygiene

Score 27/100 · Medium risk
RPKI ROA coverage
84.4%
7 prefixes RPKI invalid
IRR route objects
90.3%
9 prefixes registered for another origin
Hijack signals
1
1 announced against others' ROAs, 0 own announced by others
Upstreams
1
diversity 0/100
  • Only one upstream seen in the AS paths of its routes
  • 16% of announced prefixes (24 of 154) have no valid ROA, 7 of them RPKI invalid
  • Announces 1 prefix that RPKI assigns to another network (possible hijack or misconfiguration)

Based on 154 announced prefixes, updated daily (2026-10-26). How the score works · RPKI explained

Announced Prefixes

(BGP)154
|
Prefix
RPKI
IRR
Last Seen
24.24.0.0/18
 Valid
Other IRR
2026-10-26
24.25.128.0/18
 Valid
Other IRR
2026-10-26
24.29.32.0/19
 Valid
Other IRR
2026-10-26
24.29.64.0/19
 Valid
Other IRR
2026-10-26
24.30.240.0/20
 Valid
Other IRR
2026-10-26
24.31.80.0/21
 Invalid-2026-10-26
24.31.128.0/19
 Valid
Other IRR
2026-10-26
24.39.0.0/18
 Valid
Other IRR
2026-10-26
24.39.64.0/19
 Valid
Other IRR
2026-10-26
24.39.96.0/21
 Valid
Other IRR
2026-10-26
1-10 of 154
1 / 16

Allocated Prefixes

(RIR)19
Prefix
Country
RIR
Status
24.58.0.0/15🇺🇸 USARINallocated
24.97.0.0/16🇺🇸 USARINallocated
24.198.0.0/16🇺🇸 USARINallocated
45.46.0.0/15🇺🇸 USARINallocated
64.30.240.0/20🇺🇸 USARINallocated
66.24.0.0/16🇺🇸 USARINallocated
66.66.0.0/15🇺🇸 USARINallocated
72.45.128.0/17🇺🇸 USARINallocated
104.228.0.0/15🇺🇸 USARINallocated
150.154.0.0/16🇺🇸 USARINallocated
1-10 of 19
1 / 2

All 154 announced prefixes of AS11351 →

Downstream Customers(4)

ASNName
AS11185🇺🇸DREAMHACK - DreamHack Inc
AS23224🇺🇸ELH-AS01 - ELLIS MEDICINE
AS32117🇺🇸BERKSHIRE-HEALTH-SYSTEMS - Berkshire Health Systems
AS402327🇺🇸ANTERIS-SOLUTIONS-INC - Anteris

BGP Neighbours

(seen in AS paths)

Upstreams (1)

Networks AS11351 hands its own prefixes to: transit providers, or peers at an exchange.

  • AS7843Charter Communications154

Downstreams (71)

Networks whose own prefixes AS11351 passes on: usually its customers.

  • AS395015SUNY College At Fredonia91
  • AS7828Northland Communications52
  • AS46158OCM BOCES31
  • AS33004SUNY Empire State University18
  • AS11847GoNetSpeed16
  • AS13602I Evolve Technology Services12
  • AS22970Maine Technical College System11
  • AS40229MaineHealth Maine Medical Center11
  • AS29968Dunkirk & Fredonia Telephone Company7
  • AS31869LL Bean6
  • AS92Clarkson University5
  • AS20337SUNY Institute Of Technology5
  • AS40625Jefferson Community College5
  • AS400397Herkimer County Community College5
  • AS55032The Jackson Laboratory4
  • AS19368Thrive Operations3
  • AS26836Marchese Computer Products3
  • AS53519Central Maine Medical Family3
  • AS400931Rock Oak3
  • AS7321LocalNet Corporation2
  • AS10250INet Solutions2
  • AS11440Netsville2
  • AS12120Amphenol2
  • AS14458World Kitchen2
  • AS17382-2
  • AS22417New York Central Mutual Fire Insurance Company2
  • AS25915WASHINGTON SARATOGA WARREN HAMILTON & ESSEX BOCES2
  • AS40069ASSURED INFORMATION SECURITY2
  • AS393838Liberty Pumps2
  • AS396271S. J. Rollins Technologies2
  • AS397932New York State Assembly2
  • AS402327Anteris2
  • AS2003Electric Power Research Institute1
  • AS2903Madison Oneida BOCES1
  • AS11076COMMUNITY COMPUTER SERVICE1
  • AS14423NOVA CASUALTY COMPANY1
  • AS14433State University Of New York Oswego1
  • AS14437C&S WHOLESALE GROCERS1
  • AS19345Bard College At Simon'S Rock1
  • AS20359Preferred Mutual Insurance Company1
  • AS22270Bangor Savings Bank1
  • AS22455ESL Federal Credit Union1
  • AS23086Pound Bang Incorporated1
  • AS23224ELLIS MEDICINE1
  • AS23525Canandaigua National Corporation1
  • AS26450CTDI1
  • AS29701Cutco Corporation1
  • AS30668Madison County New York1
  • AS31747BlackRock Financial Management1
  • AS31981BlueTower Hosting1
  • AS32117Berkshire Health Systems1
  • AS33434Hamilton College1
  • AS39956Community Care Physicians, P.C1
  • AS40944Mass College Of Liberal Arts1
  • AS46236Guthrie Healthcare System1
  • AS46391Bassett Medical Center1
  • AS53426Delaware North Companies1
  • AS53657-1
  • AS53943Paylocity Corporation1
  • AS54471Androscoggin Valley Hospital1
  • AS55282State University Of New York College Of Technology At Canton1
  • AS394212Weeks Medical Center1
  • AS394372Apogee Telecom1
  • AS394690ESL Federal Credit Union1
  • AS395054CDPHP1
  • AS395908-1
  • AS396343Blurb1
  • AS400000PCB Piezotronics1
  • AS400057Upstate Niagara Cooperatives1
  • AS400411Sisters Of Charity Hospital1
  • AS401895The Gleason Works1

Transfer History

Registry transfers of AS11351 between organisations.

1
ASPA
No ASPA0 upstreams, 4 downstreams
Listed as Upstream Provider by
4 ASNs
View full ASPA details →
External Links
ARIN WhoisRIPEstat

Learn more

API
Open
GEThttps://api.ipctl.io/v1/asn/11351

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/11351" | jq