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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GeoIP location

207.21.0.0

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Result

207.21.0.0/17

Prefix:

207.21.0.0/17 (32.768 IP's - view in CIDR to IP tool)

Description:

NTT America, Inc.

Country:

United States

Announced by:

NTT America, Inc.
https://www.gin.ntt.net/

AS2914, 1.539 peers, 343 announced prefixes

See all details on AS2914 - NTT America, Inc. »

Matching prefixes

Country

ASN

Announced prefix

Description

Size

United States

AS2914

207.21.0.0/17

NTT America, Inc.

32.768

United States

AS22973

207.21.121.0/24

Norwest Venture Partners

256

Log

000	+000	Parse input (Prefix)
000	+000	Search database for '207.21.0.0/17'
021	+021	2 prefixes found
021	+000	Done

ASN database

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Result

207.21.0.0/17

Matching prefixes

Log

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