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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

125.86.16.0

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Result

125.86.16.0/20

Prefix:

125.86.16.0/20 (4.096 IP's - view in CIDR to IP tool)

Description:

CHINANET Chongqing province network

Country:

China

Announced by:

China Telecom

AS141739, 2 peers, 27 announced prefixes

See all details on AS141739 - China Telecom »

Matching prefixes

Country

ASN

Announced prefix

Description

Size

China

AS4134

125.80.0.0/13

CHINANET Chongqing province network

524.288

China

AS141739

125.86.16.0/20

CHINANET Chongqing province network

4.096

Log

000	+000	Parse input (Prefix)
000	+000	Search database for '125.86.16.0/20'
008	+008	2 prefixes found
008	+000	Done

ASN database

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Result

125.86.16.0/20

Matching prefixes

Log

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