$ query “AS13979” --type=asn → 1 result(s)
AS13979 · ATT-IPFR
AT&T Enterprises LLC
AS13979 belongs to AT&T Enterprises LLC and is a residential access provider, established in the United States in 1999. The system announces a respectable 66 048 IPv4 addresses. The bulk of its IP address space is in the United States. No IPv6 support — it's 2026, just saying.
- Pioneer — Registered before the year 2000
Basic Information
- Country
- 🇺🇸 United States
- Category
- Internet Service Provider
- Network Role
- Access Provider
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- September 28, 1999
- Last Changed
- March 04, 2026
- Last Seen
- September 22, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 6 / 5
- IPv6 Prefixes (raw / aggregated)
- 0 / 0
- IPv4 Addresses
- 66 048
- Largest IPv4 Prefix
- /18 (16 384 addresses)
- Geolocated Countries
- 🇺🇸 United States (66 048 IPs)
- Prefix Changed
- August 01, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 3 upstreams providing transit
- Peers
- 3 networks exchanging traffic without transit
- Downstream Customers
- 5 downstreams buying transit
- Degree
- 11 unique BGP neighbors
- Reach
- 5 networks in customer cone
Upstream Providers (3)
Prefix Lists
IPv4 Prefixes (6 total)
- 15.0.64.0/18 (16 384 addresses (/18 prefix))
- 15.4.64.0/18 (16 384 addresses (/18 prefix))
- 15.8.64.0/18 (16 384 addresses (/18 prefix))
- 15.12.64.0/18 (16 384 addresses (/18 prefix))
- 204.10.158.0/23 (512 addresses (/23 prefix))