Autonomous System

AS7018 AT&T Enterprises, LLC

ISPActiveUnited StatesARIN

AS7018 (ATT-INTERNET4) is an ISP network operated by AT&T Enterprises, LLC in United States, registered with ARIN. It has 625 IPv4 prefixes with 117,261,568 addresses and 15 IPv6 prefixes, which makes it the 3rd largest of 82,334 active autonomous systems by IPv4 space.

IPv4 addresses117,261,568in 625 prefixes
IPv6 prefixes15≈ 4.3 × 10³¹ addresses
Size rank#3of 82,334 active ASNs
Abuser scoreVery Low0.01% of its addresses flagged · method

Details

OrganizationAT&T Enterprises, LLC
AS nameATT-INTERNET4
Websiteatt.com
Country United States (US)
Network typeISP
RegistryARIN
Abuse contactabuse@att.net
Registered1996-07-30
Last updated2025-03-18

IPv4 prefixes

625 prefixes · 117,261,568 addresses
NetworkAddressesFirst – last address
12.0.0.0/816,777,21612.0.0.0 – 12.255.255.255
12.0.0.0/98,388,60812.0.0.0 – 12.127.255.255
12.128.0.0/98,388,60812.128.0.0 – 12.255.255.255
32.0.0.0/98,388,60832.0.0.0 – 32.127.255.255
107.64.0.0/104,194,304107.64.0.0 – 107.127.255.255
108.192.0.0/104,194,304108.192.0.0 – 108.255.255.255
108.64.0.0/112,097,152108.64.0.0 – 108.95.255.255
12.80.0.0/121,048,57612.80.0.0 – 12.95.255.255
12.112.0.0/121,048,57612.112.0.0 – 12.127.255.255
12.240.0.0/121,048,57612.240.0.0 – 12.255.255.255
23.112.0.0/121,048,57623.112.0.0 – 23.127.255.255
32.128.0.0/121,048,57632.128.0.0 – 32.143.255.255
45.16.0.0/121,048,57645.16.0.0 – 45.31.255.255
63.192.0.0/121,048,57663.192.0.0 – 63.207.255.255
64.160.0.0/121,048,57664.160.0.0 – 64.175.255.255
67.112.0.0/121,048,57667.112.0.0 – 67.127.255.255
75.48.0.0/121,048,57675.48.0.0 – 75.63.255.255
99.16.0.0/121,048,57699.16.0.0 – 99.31.255.255
99.32.0.0/121,048,57699.32.0.0 – 99.47.255.255
99.112.0.0/121,048,57699.112.0.0 – 99.127.255.255
104.0.0.0/121,048,576104.0.0.0 – 104.15.255.255
104.48.0.0/121,048,576104.48.0.0 – 104.63.255.255
104.176.0.0/121,048,576104.176.0.0 – 104.191.255.255
107.128.0.0/121,048,576107.128.0.0 – 107.143.255.255
107.192.0.0/121,048,576107.192.0.0 – 107.207.255.255
The 25 largest of 625. The API and the database have all of them.

IPv6 prefixes

15 prefixes
  • 2600:300::/24
  • 2602:300::/24
  • 2600:1700::/28
  • 2001:1890::/29
  • 2606:ae00::/32
  • 2607:9080:6::/48
  • 2620:0:f40::/48
  • 2620:27:f::/48
  • 2620:59:a000::/48
  • 2620:98:6000::/48
  • 2620:a5:2000::/48
  • 2620:b1:8000::/48
  • 2620:ca:e000::/48
  • 2620:129:100f::/48
  • 2a02:13e0:1::/48

Query AS7018 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS7018&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS7018, with or without a key:

curl "https://api.ipapi.is/?q=12.0.0.1"

Other networks of AT&T Enterprises, LLC

6 of 15
AS20057 AT&T Enterprises, LLC6,499,584 IPv4 addressesAS6389 AT&T Enterprises, LLC4,523,776 IPv4 addressesAS14654 AT&T Enterprises, LLC1,694,208 IPv4 addressesAS2686 AT&T Enterprises, LLC1,411,072 IPv4 addressesAS2687 AT&T Enterprises, LLC759,040 IPv4 addressesAS2688 AT&T Enterprises, LLC486,656 IPv4 addresses

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