ResearchRouting table, RPKI, IRR & looking glass

AS33588 Charter Communications LLC

AS33588 (BRESNAN-33588) is registered to Charter Communications LLC in US, through ARIN. It originates 52 prefixes in the global routing table.

39
IPv4 prefixes
13
IPv6 prefixes
841,984
IPv4 addresses
100%
RPKI valid

Who holds AS33588

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number
AS33588
Handle
BRESNAN-33588
Organization
Charter Communications LLC
Country
US
Registry
ARIN
ASPA
None published
WHOIS recordARIN
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       33588
ASName:         BRESNAN-33588
ASHandle:       AS33588
RegDate:        2005-01-27
Updated:        2018-11-20
Ref:            https://rdap.arin.net/registry/autnum/33588



OrgName:        Charter Communications LLC
OrgId:          CC04
Address:        6175 S. Willow Dr
City:           Greenwood Village
StateProv:      CO
PostalCode:     80111
Country:        US
RegDate:        
Updated:        2025-02-10
Ref:            https://rdap.arin.net/registry/entity/CC04


OrgAbuseHandle: ABUSE19-ARIN
OrgAbuseName:   Abuse
OrgAbusePhone:  +1-877-777-2263 
OrgAbuseEmail:  abuse@charter.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE19-ARIN

OrgTechHandle: IPADD1-ARIN
OrgTechName:   IPAddressing
OrgTechPhone:  +1-866-248-7662 
OrgTechEmail:  PublicIPAddressing@charter.com
OrgTechRef:    https://rdap.arin.net/registry/entity/IPADD1-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

What AS33588 announces

Prefixes originated by AS33588 in the routing table our collectors hold (kept current as routes change), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
39
IPv6 prefixes
13
IPv4 addresses
841,984 (3,289 /24s)
RPKI valid
52 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS33588
69
With an IRR route object
40 76%

Who AS33588 buys transit from

Inferred from the AS paths in the RouteViews tables and our own collectors’ feeds, refreshed every 4 hours, most-seen first. 2 upstreams.

Provider authorization

AS33588 publishes no ASPA of its own. 1 AS name it as a provider in theirs. Check a path.

The 1 ASes that name AS33588 as a provider

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.

Sourceas-nameMaintained by
ARINCharter-Communications-BRESNAN-33588MNT-CC04
LEVEL3ASN-BresnanBRS-MNT

Route objects with origin AS33588: LEVEL3 310 · RADB 32 · ARIN 22

as-sets that list AS33588 (20)