Comcast / Xfinity IP Lookup

Comcast / Xfinity operates the following Autonomous System Numbers (ASNs): AS7922, AS33651, AS33650. Comcast (Xfinity) is the largest US cable ISP by subscriber count, operating AS7922 — one of ARIN's most widely-announced ASNs — serving ~32 million broadband customers across 39 states. Use our IP lookup tool to identify which specific ASN a Comcast / Xfinity IP belongs to.

Comcast / Xfinity holds multiple IP address blocks allocated by its regional internet registry. These blocks are announced via BGP under AS7922 and AS33651 and AS33650. You can identify Comcast / Xfinity IP addresses using our IP lookup tool — enter any IP and check if the ISP/ASN fields show Comcast / Xfinity.

Enter the IP address in our IP Lookup tool. The ISP and ASN fields will show whether the IP is registered to Comcast / Xfinity (look for AS7922 or AS33651 or AS33650). You can also use our WHOIS Lookup to query the IP's network registration directly from the RIR database.

Comcast / Xfinity provides internet services in: United States. IP geolocation for Comcast / Xfinity addresses shows the registered location of the IP block, which may differ from the user's actual city.

Comcast / Xfinity is a mixed (residential + mobile + enterprise) — its customer IPs are generally classified as residential or mobile, not VPN/proxy. However, customers may run VPN servers on Comcast / Xfinity IP addresses, which can cause individual IPs to be flagged.