AS21508
AS21508
ARIN
ISP
Data retrieved at
This AS-only summary is estimated from a sample IP within a prefix announced by this AS, not from a specific query. Search a real IP for exact details.
Network
AS Number
AS21508
Company
Comcast Cable Communications, LLC
AS Domain
comcast.com
Using host.io for pre-visualize domains.
Type
ISP
IPv4 Addresses
70,144
IPv6 Addresses
7.37×10²⁵
Registry (RIR)
ARIN
141.104.0.0/16
Abuse Contacts
Announced Prefixes (77)
Netblock
Num. of IPs
RPKI
RPKI Origin Validation
RPKI verifies that an IP prefix is legitimately announced by the authorized Autonomous System (ASN) using Route Origin Authorizations (ROAs).
Unknown
No valid ROA was found for this prefix.
UNKNOWN
Validated Prefix
141.104.0.0/16
Authorized ASN
AS21508
IP Geolocation
Country
United States
Continent
North America
European Union
No
Phone prefix
+1
Currency
US Dollar (USD $)
Approximate location (country-level)
Open in Maps