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CIDR Range

5.57.100.40/30

Addresses
4
4
Sub-ranges
0+
within this block
PTR Density
0.0%
0 of 4 IPs have PTR ~

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

73/100
Moderate
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Geolocation

All 4 IP addresses in 5.57.100.40/30

Not announced as an exact prefix — covered by the announced supernet 5.57.96.0/19.

Announced prefix
Origin AS
Announcement samples
121,349
Last seen
2026-07-23 18:29:27

Frequently Asked Questions

What is 5.57.100.40/30?

5.57.100.40/30 is a CIDR network block containing 4 IPv4 addresses (from 5.57.100.40 to 5.57.100.43). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 5.57.100.40/30 network?

The 5.57.100.40/30 range is allocated to Societe Reunionnaise Du Radiotelephone Scs and announced via AS49902 from Mayotte.

How many IP addresses are in 5.57.100.40/30?

5.57.100.40/30 contains exactly 4 usable IPv4 addresses. A /30 prefix length means 4 addresses are covered by this single routing entry.

Last updated: 2026-07-23 18:25:31 UTC
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