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CIDR
/21 · 2.0K IPs
ASN
Societe Francaise Du Radiotelephone - SFR SA
Reverse DNS
139.160.66.37.rev.sfr.net
Last scanned 8 hr ago
Blocklisted
Checking…
Scanning blocklists

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.

78/100
Moderate
How this score is built

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

Network Allocation for 37.66.160.139

CIDR range
37.66.160.0/21
IP range (int)
625,123,328 — 625,125,375
Prefix length
/21
Organization
Societe Francaise Du Radiotelephone - SFR SA
ASN
AS15557
ASN name
Societe Francaise Du Radiotelephone - SFR SA
Location
Roubaix, Hauts De France, France
Coordinates
50.697400, 3.178000
Accuracy radius
100 km
Postal code
59100
Regional Internet Registry
RIPE
Allocated
2012-01-17
Data source(s)
maxmind_city, maxmind_asn, maxmind_country, ipinfo_lite
Last updated
2026-09-02 05:20:49

Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.

Announced prefix
Origin AS
Announcement samples
7,489
Last seen
2026-09-02 16:00:25

Frequently Asked Questions

Who owns 37.66.160.139?

37.66.160.139 is allocated to Societe Francaise Du Radiotelephone - SFR SA (AS15557), registered in Roubaix, France.

Where is 37.66.160.139 located?

The geolocation for 37.66.160.139 maps to Roubaix, France based on MaxMind GeoLite2 data. Accuracy depends on the provider and may represent the ISP's regional hub rather than the exact endpoint.

What network is 37.66.160.139 on?

37.66.160.139 belongs to the 37.66.160.0/21 network block announced by AS15557. This range contains 2,048 addresses.

Does 37.66.160.139 have a reverse DNS record?

Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.

Neighbors

Other addresses in the same /24.

Related

Last updated: 2026-09-02 16:37:26 UTC
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