Autonomous system
AS20001 TWC-20001-PACWEST
Residential DROP-listed space ARIN
Summary
Charter (legacy Time Warner Cable)
isp residential eyeball cable
AS20001 is a Charter Communications network carrying legacy Time Warner Cable / Road Runner residential broadband, now marketed as Spectrum.
What it's used for
- Cable (DOCSIS) and fibre home internet for US households in former Time Warner Cable footprint markets.
Notable
- A large consumer "eyeball" network: addresses here are home connections, commonly behind carrier-grade NAT, not servers.
- Charter runs several ASNs that all roll up to the Spectrum network; this one originated in the Time Warner Cable / Road Runner side of the 2016 merger.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 635 prefixes · 7.22M addresses IPv6 159 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 794 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS20001- Registry name
- TWC-20001-PACWEST
- Registrant
- Charter Communications Inc
- Abuse contact
- abuse@charter.net
- Registered
- 2001-03-13
- Last changed
- 2018-11-27
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 88% valid · 548 valid, 73 with no ROA
- ROAs
- 817 authorising AS20001
- ASPA
- no ASPA record
- IRR
- 90% registered · 561 of 621 announcements 46 other origin
- Route objects
- 1,714 naming AS20001
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
1 DROP match Announced space overlapping the DROP prefix list.
| Announced | DROP entry | Record |
|---|---|---|
| 199.253.226.0/24 | 199.253.224.0/20 | SBL180442 |
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,773 prefixes, as published 2026-10-13. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere