A private IPv4 address block reserved for internal networks. Spans 172.16.0.0 to 172.31.255.255. Not globally routable.
This range is reserved by IANA — it is not allocated to an organization, ISP, or regional internet registry. Addresses here appear on every private/internal network that follows the standard, so lookups will not identify a specific owner. 172.16.1.4/30 is a sub-block of 172.16.0.0/12, the defining reserved range.
All 4 IP addresses in 172.16.1.4/30
BGP Routing
Live BGP anomalies →This block is announced in BGP, observed across our RIPE RIS collectors.
Frequently Asked Questions
What is 172.16.1.4/30?
172.16.1.4/30 falls inside 172.16.0.0/12 — a Private network range reserved by RFC 1918. A private IPv4 address block reserved for internal networks. Spans 172.16.0.0 to 172.31.255.255. Not globally routable.
Is 172.16.1.4/30 routable on the public internet?
No. 172.16.1.4/30 is part of IANA-reserved special-use space (172.16.0.0/12, RFC 1918). Packets with these addresses are either filtered by backbone routers or handled as local/special traffic — they never reach the public internet.
Who owns 172.16.1.4/30?
172.16.1.4/30 is not allocated to any organization or ISP. It is part of the Private network block reserved by IANA under RFC 1918 for every network to use privately.
