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ASN Lookup Tool
AS637 DNIC-ASBLK-00616-00665

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS637
Organisation
DoD Network Information Center
Name
DNIC-ASBLK-00616-00665
Total IPv4 Addresses
919,296
Total IPv4 Prefixes
491
Total IPv6 Prefixes
0
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#380 out of 77,686
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
1990-04-19
Registration Last Change
2009-06-18
Receiving From

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

ASN
Organisation
AS367
US flagDoD Network Information Center
AS27064
US flagDoD Network Information Center
AS27065
US flagDoD Network Information Center
AS27066
US flagDoD Network Information Center
AS1733
US flagDoD Network Information Center
IPv4 Active Prefixes

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

Prefix137.233.195.0/24
Range From137.233.195.0
Range To137.233.195.255
Prefix137.234.0.0/22
Range From137.234.0.0
Range To137.234.3.255
Prefix137.234.64.0/22
Range From137.234.64.0
Range To137.234.67.255
Prefix137.234.68.0/22
Range From137.234.68.0
Range To137.234.71.255
Prefix137.234.72.0/22
Range From137.234.72.0
Range To137.234.75.255
Showing 5 of 491
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.