Multicast (224.0.0.0/4) — used to send packets to groups of hosts simultaneously; common in video streaming, IPTV, and network discovery protocols. These addresses are not routable on the public Internet and are excluded from search-engine indexing.
Network Allocation for 224.129.0.37
- CIDR range
- 224.0.0.0/4
- IP range (int)
- 3,758,096,384 — 4,026,531,839
- Prefix length
- /4
- Regional Internet Registry
- IANA
- Data source(s)
- iana_special
- Last updated
- 2026-04-16 09:08:02
Frequently Asked Questions
Why is 224.129.0.37 reserved?
224.129.0.37 is part of a reserved address block: Multicast (224.0.0.0/4) — used to send packets to groups of hosts simultaneously; common in video streaming, IPTV, and network discovery protocols. Reserved addresses are not routable on the public internet and are typically used for private networks, loopback testing, or documentation purposes.
Can I use 224.129.0.37 on my network?
If 224.129.0.37 falls within a private-use range (like 10.0.0.0/8, 172.16.0.0/12, or 192.168.0.0/16), you can use it freely on your local network. It will not be reachable from the public internet.
Neighbors
Other addresses in the same /24.
