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ASN Lookup Tool
AS17229 ATT-CERFNET-BLOCK

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS17229
Organisation
AT&T Enhanced Network Services
Name
ATT-CERFNET-BLOCK
Total IPv4 Addresses
27904
Total IPv4 Prefixes
29
Total IPv6 Prefixes
0
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#5,482 out of 77,412
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
2000-08-09
Registration Last Change
2000-08-09
Receiving From

The list of active Autonomous Systems (ASs) which send traffic to that ASN.

ASN
Organisation
AS7018
US flagAT&T Services, Inc.
IPv4 Active Prefixes

This provides the list of IPv4 address space routes/prefixes currently announced on Border Gateway Protocol (BGP).

Prefix12.67.0.0/24
Range From12.67.0.0
Range To12.67.0.255
Prefix12.67.13.0/24
Range From12.67.13.0
Range To12.67.13.255
Prefix32.101.209.0/24
Range From32.101.209.0
Range To32.101.209.255
Prefix63.240.128.0/21
Range From63.240.128.0
Range To63.240.135.255
Prefix63.240.136.0/22
Range From63.240.136.0
Range To63.240.139.255
Showing 5 of 29
Autonomous System (AS) is a network (or collection of networks) that are all managed and supervised by a single entity or organisation. This tool provides a comprehensive ownership and connectivity report for any given AS number.