Autonomous System
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Overview
AS15557 is announced on the Internet: RIPE RIS route collectors currently see 147 IPv4 prefixes and 12 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 15,829,504 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 52 upstream neighbours (transit providers or peers) and 90 downstream neighbours (customers or networks it carries). Its most visible upstreams are Arelion Sweden AB (AS1299), TELECOM ITALIA SPARKLE S.p.A. (AS6762), and Cogent Communications, LLC (AS174). AS15557 was assigned by RIPE NCC, and its registration country is France.
Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 8:52 PM UTC. This page is refreshed at most every 12 hours.
Go further
The trace goes to 93.0.0.1, the first address of 93.0.0.0/11. An address picked inside a prefix may not answer (nothing listens there, or the network filters probes): the trace then shows the path up to the last network that replies.
Announced prefixes
IPv4 prefixes (147 prefixes)
| Prefix | Addresses |
|---|---|
| 37.64.0.0/13 | 524,288 |
| 46.35.0.0/19 | 8,192 |
| 46.218.0.0/16 | 65,536 |
| 62.8.0.0/19 | 8,192 |
| 62.39.0.0/16 | 65,536 |
| 62.62.128.0/17 | 32,768 |
| 62.106.128.0/17 | 32,768 |
| 62.129.160.0/19 | 8,192 |
| 62.241.64.0/18 | 16,384 |
| 77.104.0.0/18 | 16,384 |
| 77.128.0.0/13 | 524,288 |
| 77.134.204.0/24 | 256 |
| 77.136.0.0/16 | 65,536 |
| 77.137.196.0/22 | 1,024 |
| 77.137.200.0/21 | 2,048 |
| 77.137.208.0/20 | 4,096 |
| 77.140.0.0/15 | 131,072 |
| 77.142.0.0/16 | 65,536 |
| 77.144.0.0/12 | 1,048,576 |
| 77.192.0.0/12 | 1,048,576 |
| 78.112.0.0/12 | 1,048,576 |
| 78.155.128.0/19 | 8,192 |
| 79.80.0.0/12 | 1,048,576 |
| 79.174.192.0/18 | 16,384 |
| 80.70.32.0/20 | 4,096 |
| 80.118.0.0/15 | 131,072 |
| 80.124.0.0/15 | 131,072 |
| 80.236.0.0/17 | 32,768 |
| 81.1.0.0/18 | 16,384 |
| 81.64.0.0/14 | 262,144 |
| 81.185.0.0/16 | 65,536 |
| 81.220.0.0/16 | 65,536 |
| 82.101.0.0/18 | 16,384 |
| 82.216.0.0/16 | 65,536 |
| 83.141.128.0/17 | 32,768 |
| 83.145.64.0/18 | 16,384 |
| 84.4.0.0/14 | 262,144 |
| 84.55.128.0/18 | 16,384 |
| 84.96.0.0/13 | 524,288 |
| 84.205.128.0/19 | 8,192 |
| 85.68.0.0/15 | 131,072 |
| 85.168.0.0/14 | 262,144 |
| 85.203.7.0/24 | 256 |
| 86.64.0.0/12 | 1,048,576 |
| 87.231.0.0/16 | 65,536 |
| 88.136.0.0/14 | 262,144 |
| 88.140.0.0/15 | 131,072 |
| 88.142.0.0/16 | 65,536 |
| 88.143.251.0/24 | 256 |
| 88.143.252.0/24 | 256 |
| 88.143.253.0/24 | 256 |
| 88.143.254.0/24 | 256 |
| 88.143.255.0/24 | 256 |
| 88.219.0.0/16 | 65,536 |
| 89.2.0.0/15 | 131,072 |
| 89.156.0.0/14 | 262,144 |
| 89.224.0.0/14 | 262,144 |
| 91.68.0.0/14 | 262,144 |
| 91.151.112.0/20 | 4,096 |
| 91.189.104.0/21 | 2,048 |
| 91.240.78.0/24 | 256 |
| 91.240.79.0/24 | 256 |
| 92.88.0.0/13 | 524,288 |
| 92.102.0.0/15 | 131,072 |
| 93.0.0.0/11 | 2,097,152 |
| 93.191.80.0/21 | 2,048 |
| 95.157.192.0/18 | 16,384 |
| 109.0.0.0/11 | 2,097,152 |
| 141.170.216.0/21 | 2,048 |
| 143.196.0.0/24 | 256 |
| 143.196.1.0/24 | 256 |
| 143.196.16.0/24 | 256 |
| 143.196.17.0/24 | 256 |
| 143.196.18.0/24 | 256 |
| 143.196.20.0/24 | 256 |
| 143.196.21.0/24 | 256 |
| 143.196.124.0/24 | 256 |
| 143.196.125.0/24 | 256 |
| 143.196.126.0/24 | 256 |
| 143.196.127.0/24 | 256 |
| 143.196.130.0/24 | 256 |
| 143.196.143.0/24 | 256 |
| 143.196.144.0/24 | 256 |
| 143.196.157.0/24 | 256 |
| 143.196.158.0/24 | 256 |
| 143.196.159.0/24 | 256 |
| 143.196.160.0/24 | 256 |
| 143.196.161.0/24 | 256 |
| 143.196.162.0/24 | 256 |
| 143.196.163.0/24 | 256 |
| 143.196.164.0/24 | 256 |
| 143.196.165.0/24 | 256 |
| 143.196.166.0/24 | 256 |
| 143.196.167.0/24 | 256 |
| 143.196.250.0/24 | 256 |
| 143.196.252.0/24 | 256 |
| 143.196.253.0/24 | 256 |
| 148.169.22.0/24 | 256 |
| 185.9.152.0/22 | 1,024 |
| 185.43.35.0/24 | 256 |
Showing the first 100 of 147, in address order. Complete list on RIPEstat
IPv6 prefixes (12 prefixes)
| Prefix |
|---|
| 2a00:6200::/29 |
| 2a02:8400::/25 |
| 2a02:e000::/29 |
| 2a04:800::/30 |
| 2a04:807::/48 |
| 2a04:807:1::/48 |
| 2a04:807:2::/48 |
| 2a04:807:3::/48 |
| 2a13:7505:3::/48 |
| 2a13:7505:4::/48 |
| 2a13:7505:8004::/48 |
| 2a13:7506:9004::/48 |
Neighbours
Upstreams (transit or peers) (52)
| AS | Network | Visibility |
|---|---|---|
| AS1299 | Arelion Sweden AB | 3,950 |
| AS6762 | TELECOM ITALIA SPARKLE S.p.A. | 3,722 |
| AS174 | Cogent Communications, LLC | 3,106 |
| AS2914 | NTT America, Inc. | 2,385 |
| AS6939 | Hurricane Electric LLC | 1,445 |
| AS9002 | RETN Limited | 1,188 |
| AS1273 | IDDQD-AS | 876 |
| AS3320 | Deutsche Telekom AG | 626 |
| AS25091 | IP-Max SA | 540 |
| AS13030 | Init7 (Switzerland) Ltd. | 518 |
| AS6461 | Zayo Bandwidth | 488 |
| AS33891 | Core-Backbone GmbH | 316 |
| AS6830 | LibertyGlobal Liberty Global Europe Holding B.V. | 272 |
| AS2497 | Internet Initiative Japan Inc. | 202 |
| AS8218 | Zayo Infrastructure France SA | 196 |
| AS60068 | Datacamp Limited | 186 |
| AS39351 | 31173 Services AB | 184 |
| AS24961 | - | 180 |
| AS34019 | Hivane Association | 176 |
| AS34177 | Celeste SAS | 174 |
| AS1103 | SURF B.V. | 173 |
| AS41327 | - | 171 |
| AS4637 | Telstra Global | 162 |
| AS8455 | atom86 BV | 159 |
| AS35280 | F5 Networks SARL | 159 |
| AS5405 | Inter.link GmbH | 148 |
| AS3303 | Swisscom (Schweiz) AG | 141 |
| AS15412 | - | 118 |
| AS6758 | - | 115 |
| AS29075 | IELO-LIAZO SERVICES SAS | 105 |
The 30 most visible of 52.
Downstreams (customers) (90)
| AS | Network | Visibility |
|---|---|---|
| AS205461 | France Travail EPA | 685 |
| AS35632 | Societe Francaise Du Radiotelephone - SFR SA | 613 |
| AS205862 | FEDERAL SERVICE GIE | 602 |
| AS200245 | Syndicat Mixte Manche Numerique | 578 |
| AS12670 | Completel SAS | 536 |
| AS34235 | ITINSELL CLOUD SAS | 512 |
| AS3259 | Docapost BPO SAS | 457 |
| AS35238 | Alsace Connexia | 437 |
| AS60032 | Coriolis Telecom SAS | 424 |
| AS60697 | Association de moyens klesia | 384 |
| AS203984 | - | 378 |
| AS207589 | - | 366 |
| AS49540 | - | 365 |
| AS49902 | - | 361 |
| AS199233 | Mutuelle Assurance Instituteur France STE | 360 |
| AS49011 | - | 357 |
| AS42811 | - | 353 |
| AS39847 | - | 352 |
| AS41334 | - | 352 |
| AS204426 | - | 352 |
| AS43698 | - | 351 |
| AS43763 | - | 351 |
| AS48179 | - | 351 |
| AS49112 | - | 351 |
| AS49694 | - | 328 |
| AS13223 | - | 304 |
| AS20776 | - | 293 |
| AS52039 | - | 291 |
| AS60855 | - | 280 |
| AS212562 | - | 266 |
The 30 most visible of 90.
24 more neighbours appear on both sides of this network depending on the path, so they are counted in neither list.
Visibility is RIPEstat's count of how often the route collectors observed the link. It compares neighbours with each other; it is not a traffic volume.
How to read this page
An Autonomous System (AS) is a network run under one routing policy: an internet provider, a cloud, a content network, a university. Each one has a number, its ASN, assigned by a regional registry (ARIN, RIPE NCC, APNIC, LACNIC, AFRINIC), and uses BGP, the protocol networks use to tell each other where addresses are, to announce the blocks of addresses it delivers to.
A prefix such as 203.0.113.0/24 is a block of addresses: the number after the slash says how many bits are fixed, so a /24 holds 256 IPv4 addresses and a /16 holds 65,536. Networks often announce a large block and smaller pieces of it at the same time, which is why the address total counts each address once.
Neighbours come from the paths themselves. A network that appears just before this one in a path, on the collector's side, is an upstream: a transit provider or a peer. One that appears just after it is a downstream, usually a customer. Peering at an internet exchange also shows up as an upstream, so the upstream list is not a list of paid transit.
The data comes from RIPEstat, run by the RIPE NCC, which gathers the routing tables of hundreds of networks through its RIS route collectors. This page reads it when it is visited and keeps it for 12 hours at most; the BGP viewer reads it live.