IP address 123.31.31.128
123.31.31.128 is a public IPv4 address announced by AS135905 (VNPT-AS-VN VIETNAM POSTS AND TELECOMMUNI), registered in Vietnam. See its threat-intelligence verdict, network block, reverse DNS name and reputation links in one place, free.
Free tier: 5 live checks per day, per IP.
Need volume or the API? See API access.
See the addresses we currently flag.
Address profile
Public
123.31.31.128
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
AS135905 · VNPT-AS-VN VIETNAM POSTS AND TELECOMMUNI
Network registered in
🇻🇳 Vietnam
- Decimal
- 2065637248
- Hexadecimal
- 0x7B1F1F80
- Binary
- 01111011.00011111.00011111.10000000
- Reverse DNS name
- 128.31.31.123.in-addr.arpa
- As IPv6
- ::ffff:123.31.31.128
The networks around it
The /24 around it
123.31.31.0/24
123.31.31.0 to 123.31.31.255
256 addresses
The /16
123.31.0.0/16
123.31.0.0 to 123.31.255.255
65,536 addresses
The /8
123.0.0.0/8
123.0.0.0 to 123.255.255.255
16,777,216 addresses
Checking 123.31.31.128 against our threat intelligence and the public registries…
Want the full picture and an API?
Our Threat Intelligence service returns real-time verdicts, fleet sightings and JSON for automation.