All ASNs

Autonomous System details for AS6431

AS6431
AT&T Enterprises, LLC

AS6431 — AT&T Enterprises, LLC

AS Name
ATT-RESEARCH
Country
United States (US)
Website
Number of IPv4
396,800
Number of IPv6
2.33 × 1026
ASN type
ISP
Status
Assigned
Registry
ARIN
Allocated
April 12, 1996
Last updated
March 18, 2025

IP Ranges

15 IPv4 prefixes, 6 IPv6 prefixes
Prefix Company Number of IPs
12.106.32.0/23 AT&T Enterprises, LLC 512
12.106.34.0/24 AT&T Enterprises, LLC 256
12.106.35.0/24 AT&T Enterprises, LLC 256
135.197.0.0/16 AT&T Services, Inc. 65,536
135.197.0.0/17 AT&T Services, Inc. 32,768
135.197.128.0/17 AT&T Services, Inc. 32,768
135.205.0.0/16 AT&T Services, Inc. 65,536
135.205.0.0/17 AT&T Services, Inc. 32,768
135.205.128.0/17 AT&T Services, Inc. 32,768
135.207.0.0/16 AT&T Services, Inc. 65,536
135.207.0.0/17 AT&T Services, Inc. 32,768
135.207.128.0/17 AT&T Services, Inc. 32,768
192.20.225.0/24 AT&T Enterprises, LLC 256
204.178.8.0/21 Verizon Business 2,048
207.76.218.0/24 Verizon Business 256
2620:0:f00::/41 AT&T Enterprises, LLC 1.55 × 1026
2620:0:f01::/48 AT&T Enterprises, LLC 1.21 × 1024
2620:0:f40::/44 AT&T Enterprises, LLC 1.93 × 1025
2620:0:f50::/44 AT&T Enterprises, LLC 1.93 × 1025
2620:0:f60::/44 AT&T Enterprises, LLC 1.93 × 1025
2620:0:f70::/44 AT&T Enterprises, LLC 1.93 × 1025

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Peers of AS6431

0 peers

AS6431 has no peers recorded.

Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.

Upstreams of AS6431

1 upstreams

AS6431 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS6431 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS6431

0 downstreams

AS6431 has no downstreams recorded.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.

Our IP address tools

Explore all tools

What is my IP?

Discover your public IP address and detailed information about your connection.

CIDR to IP Range Converter (IPv4 and IPv6)

Convert CIDR notation to IP address ranges and vice versa. Useful for network configuration and security.

IP to Hostname/rDNS Lookup

Perform a reverse DNS (rDNS) lookup to get the hostname for an IP address.

IPv6 Expander/Collapser

Expand or collapse IPv6 addresses to their full or shortened forms for better readability and usage.