ASN database

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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

104.121.66.0

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Result

104.121.66.0/23

Prefix:

104.121.66.0/23 (512 IP's - view in CIDR to IP tool)

Description:

RETN Limited

Country:

Ukraine

Announced by:

RETN Limited
https://www.retn.net/

AS9002, 3.280 peers, 32 announced prefixes

See all details on AS9002 - RETN Limited »

Matching prefixes

Country

ASN

Announced prefix

Description

Size

United States

AS20940

104.64.0.0/10

Akamai International B.V.

+4M

Ukraine

AS9002

104.121.66.0/23

RETN Limited

512

Log

000	+000	Parse input (Prefix)
000	+000	Search database for '104.121.66.0/23'
014	+014	2 prefixes found
014	+000	Done

ASN database

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Result

104.121.66.0/23

Matching prefixes

Log

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