ASN database

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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.

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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.

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

GeoIP location

157.71.208.0

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Result

157.71.208.0/23

Prefix:

157.71.208.0/23 (512 IP's - view in CIDR to IP tool)

Description:

KDDI

Country:

Japan

Announced by:

KDDI
https://www.kddi.com/english/index.html

AS2516, 302 peers, 400 announced prefixes

See all details on AS2516 - KDDI »

Matching prefixes

Country

ASN

Announced prefix

Description

Size

Japan

AS131932

157.71.128.0/17

JR East Information Systems Company

32.768

Japan

AS2516

157.71.208.0/23

KDDI

512

Log

000	+000	Parse input (Prefix)
000	+000	Search database for '157.71.208.0/23'
009	+008	2 prefixes found
009	+000	Done

ASN database

Related tools

Result

157.71.208.0/23

Matching prefixes

Log

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