ASN database

You may find these sub-pages interesting as well:

Related tools

DNS lookup / nslookup / DIG of DNS records. An online tool for DNS lookups. By default recursive lookups querying the authoritative name servers. Lookups on specific DNS resolvers are also possible. Additionally, it will look up secondary records and output a full log of what was done on a technical level.

WHOIS / RDAP lookup

Perform WHOIS and/or RDAP lookups on domains, IP addresses, and ASNs. Will output all available technical info, contact info, etc.

Reverse DNS

Perform reverse DNS (rDNS/PTR) lookups of any IP.

CIDR calculator

beta

IP to CIDR calculation tool with subnet info. The reverse, CIDR ranges to IP addresses, is also possible. Last but not least, it includes a tool for refactoring groups of IPs, domain names, and/or other CIDR ranges.

What is my IPv4 and IPv6?

Check your own IP - both IPv4 and IPv6. Works as a connectivity test as well.

GeoIP location

Online tool GeoIP location of any IP and/or domain.

World map, day/night + local time

beta

Beautiful day/night map of the world, with markup of all major cities including local date and time.

Result

AS2576, U. S. Department of Transportation

Last update of data:
27-04-2024 13:04 UTC

ASN:

AS2576 (DOT-AS)

Country:

US - United States (North America)

Org.:

U. S. Department of Transportation

Stats:

Peers

IX'es

Prefixes

IPv4

+268K

IPv6

3,4E+25

Contact:

U. S. Department of Transportation
1200 New Jersey Ave. S.E.
E51-304
20590
Washington
US

+1-202-366-7677

US Department of Transportation
imc@dot.gov
+1-202-366-5605

Peers

Country

Relationship

ASN

Organization

Peers

Prefix'es

United States

Upstream

AS13979

AT&T Services, Inc.

Announced (uniq) prefixes

Country

ASN

Announced prefix

Description

Size

United States

AS2576

152.119.0.0/16