CIDR Range

37.71.85.160/28

16 IPs /28 Societe Francaise Du Radiotelephone - SFR SA AS15557 France RIPE

Addresses

IP Range

37.71.85.160

→ 37.71.85.175

Sub-ranges

within this block

PTR Density

100.0%

16 of 16 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

Baseline (neutral) 65
Has a reverse-DNS (PTR) record +5
Established allocation (14y) +3
Trust score 73 / 100

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Geolocation

All 16 IP addresses in 37.71.85.160/28

37.71.85.160 37.71.85.161 37.71.85.162 37.71.85.163 37.71.85.164 37.71.85.165 37.71.85.166 37.71.85.167 37.71.85.168 37.71.85.169 37.71.85.170 37.71.85.171 37.71.85.172 37.71.85.173 37.71.85.174 37.71.85.175

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 37.64.0.0/13.

Announced prefix

37.64.0.0/13

Origin AS

AS15557

Announcement samples

4,551

Last seen

2026-07-23 22:48:01

Frequently Asked Questions

What is 37.71.85.160/28?

37.71.85.160/28 is a CIDR network block containing 16 IPv4 addresses (from 37.71.85.160 to 37.71.85.175). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 37.71.85.160/28 network?

The 37.71.85.160/28 range is allocated to Societe Francaise Du Radiotelephone - SFR SA and announced via AS15557 from France.

How many IP addresses are in 37.71.85.160/28?

37.71.85.160/28 contains exactly 16 usable IPv4 addresses. A /28 prefix length means 16 addresses are covered by this single routing entry.

Last updated: 2026-07-23 23:10:33 UTC