AS21502
Societe Francaise Du Radiotelephone - SFR SA
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.
- Baseline (neutral) 65
- Multiple-origin (MOAS) routing anomaly −12
- Isp allocation +5
- Trust score 58 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
About SFR
SFR S.A. is a French telecommunications company.
⚠ 2 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS21502 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.
| Prefix | Origin ASNs | Last detected (UTC) |
|---|---|---|
| 89.157.88.0/21 | AS20776, AS21502 | 2026-07-19 02:37:49 |
| 89.157.96.0/19 | AS20776, AS21502 | 2026-07-19 02:37:49 |
AS21502 — global IP footprint
Cities where AS21502 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS21502 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 89.157.88.0/21 | 41,705 | 2026-07-20 13:02:58 |
| 89.157.96.0/19 | 39,222 | 2026-07-20 13:02:58 |
Frequently Asked Questions
What is AS21502?
AS21502 is an Autonomous System Number assigned to Societe Francaise Du Radiotelephone - SFR SA. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS21502 announce?
AS21502 announces 10.2K IPv4 addresses distributed across 14 routed CIDR prefixes. The network is registered in Guadeloupe.
Who operates AS21502?
AS21502 is operated by Societe Francaise Du Radiotelephone - SFR SA. The organization is based in Guadeloupe. You can view all IP ranges and related ASNs on the organization page.
What country is AS21502 registered in?
AS21502 is registered in Guadeloupe. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
