Autonomous system
AS13343 TWC-13343-CHARLOTTE
Unclassified ARIN
Summary
Charter Communications
isp telecom media
Four company brands are visible at once: one in the handle, one in the netnames, one in the registrant, one in DNS.
What it's used for
- A regional cable network in Charlotte. 17,408 addresses across twelve IPv4 prefixes, one observed BGP neighbour, and the IPv6 block
2001:1998:8d0::/44.
Notable
- Netnames include
ROAD-RUNNER-1,ROAD-RUNNER-5,RRMAandCC04. - Registrants alternate between
Charter Communications IncandCharter Communications LLCacross neighbouring blocks. - All eighteen sampled addresses resolve, to names like
syn-024-024-068-000.inf.spectrum.comwith every octet padded to three digits. - Only one BGP neighbour is observed for a network of this size.
Interesting
- Zero-padded octets make every hostname the same length, which sorts correctly in a plain text file and lines up in a terminal. It is a choice made by someone who expected to read these names in bulk.
- An older cable brand survives in the netnames, its parent's initials in the shorter ones, the current corporate name in the registrant, and the current consumer brand in DNS. Each field was updated at a different point in the same company's history.
IncandLLCon adjacent blocks are two registrations made under two legal forms of the same business, neither of which was reconciled afterwards.- One neighbour for seventeen thousand addresses is a regional network that reaches the rest of the internet entirely through its own parent.
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.
Transit providers
1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS7843 | Charter Communications Inc | 654 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-19, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 12 prefixes · 17.41K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 13 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS13343- Registry name
- TWC-13343-CHARLOTTE
- Registrant
- Charter Communications Inc
- Abuse contact
- abuse@charter.net
- Registered
- 2000-06-09
- Last changed
- 2018-11-27
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 11 valid, 0 with no ROA
- ROAs
- 12 authorising AS13343
- ASPA
- no ASPA record
- IRR
- 45% registered · 5 of 11 announcements
- Route objects
- 136 naming AS13343
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,778 prefixes, as published 2026-10-20. 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