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Free tools · IP address lookup

IP address 172.203.220.57

172.203.220.57 is a public IPv4 address announced by AS8075 (MICROSOFT-CORP-MSN-AS-BLOCK), registered in United States. See its threat-intelligence verdict, network block, reverse DNS name and reputation links in one place, free.

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Any IPv4 or IPv6 address. Private and reserved ranges are explained, but never sent to outside sources.

Address profile

172.203.220.57

IPv4 · Public address
Public

Ordinary routable internet space, allocated by a regional internet registry to a network operator. The reputation of an address like this is worth checking: it can belong to a hosting provider, a company, a home connection or a mobile network, and its history travels with it.

Announced by AS8075 · MICROSOFT-CORP-MSN-AS-BLOCK
Network registered in 🇺🇸 United States
Decimal
2899041337
Hexadecimal
0xACCBDC39
Binary
10101100.11001011.11011100.00111001
Reverse DNS name
57.220.203.172.in-addr.arpa
As IPv6
::ffff:172.203.220.57

The networks around it

The /24 around it 172.203.220.0/24 172.203.220.0 to 172.203.220.255 256 addresses
The /16 172.203.0.0/16 172.203.0.0 to 172.203.255.255 65,536 addresses
The /8 172.0.0.0/8 172.0.0.0 to 172.255.255.255 16,777,216 addresses

Checking 172.203.220.57 against our threat intelligence and the public registries…

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