AT&T IP Ranges
AT&T is one of the largest telecommunications and internet providers in the United States, operating fiber, DSL, and mobile networks under AS7018 across the country.
- Provider
- AT&T
- Primary ASN
- AS7018
- Category
- ISP
- Headquarters
- Dallas, TX, USA
- Announced IPv4 prefixes
- 626
Known IP ranges
The blocks below are the major address allocations associated with AT&T. A network of this size deaggregates heavily, so an individual route in the global routing table is usually more specific than the block shown. Prefix sets change over time — use WHOIS Lookup for the authoritative current record for any specific IP.
12.0.0.0/8
99.0.0.0/13
45.16.0.0/12
Where the current list lives
We found no published IP list or geofeed in the AT&T ARIN registry records we sampled on 21 Oct 2026. Registry record checked
The current view of what the network announces is in the routing table: AS7018 on RIPEstat.
What does an AT&T IP mean in a privacy test?
An AT&T IP (AS7018) as your visible address means you are connecting through an AT&T internet or mobile line with no VPN active. If you expected a VPN exit, seeing AT&T means your traffic is not going through the tunnel.
Related tools
Frequently asked questions
What IP ranges does AT&T use?
AT&T announces the legacy 12.0.0.0/8 block plus ranges such as 99.0.0.0/13 and 45.16.0.0/12 under AS7018. Many smaller routes inside 12.0.0.0/8 are announced by other ASNs, including AT&T Mobility (AS20057) and customers' own networks. RIPEstat lists what AS7018 announces today.
Why does my IP show AT&T?
If your visible IP returns AS7018 (AT&T), your traffic exits through an AT&T line. This is expected with no VPN active. A working VPN changes your visible ASN to the VPN provider.
Does AT&T offer static IP addresses?
AT&T business fiber plans offer static IP options, while residential connections typically use dynamic addresses. Both fall within AT&T AS7018 ranges.
How do I look up an AT&T IP address?
Use MyIPScan IP Geolocation Lookup. AT&T IPs usually return AS7018 (AT&T Enterprises, LLC) with the service area city; some AT&T mobile IPs return AS20057 (AT&T Mobility) instead.
What ASN does AT&T use?
AT&T uses AS7018 for its primary US internet backbone. Use ASN Lookup to see what AS7018 announces today.