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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

209.152.138.0

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Result

209.152.138.0/23

Prefix:

209.152.138.0/23 (512 IP's - view in CIDR to IP tool)

Description:

Bluebird Network

Country:

United States

Announced by:

Bluebird Network
https://www.bluebirdnetwork.com

AS62943, 91 peers, 114 announced prefixes

See all details on AS62943 - Bluebird Network »

Matching prefixes

Country

ASN

Announced prefix

Description

Size

United States

AS62943

209.152.138.0/23

Bluebird Network

512

United States

AS399880

209.152.139.0/24

BITCO Corporation

256

Log

000	+000	Parse input (Prefix)
000	+000	Search database for '209.152.138.0/23'
008	+008	2 prefixes found
008	+000	Done

ASN database

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Result

209.152.138.0/23

Matching prefixes

Log

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