Autonomous System
AS12637 · SEEWEB s.r.l.
Overview
AS12637 is announced on the Internet: RIPE RIS route collectors currently see 35 IPv4 prefixes and 10 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 79,872 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 63 upstream neighbours (transit providers or peers) and 205 downstream neighbours (customers or networks it carries). Its most visible upstreams are NTT America, Inc. (AS2914), Hurricane Electric LLC (AS6939), and Arelion Sweden AB (AS1299). AS12637 was assigned by RIPE NCC, and its registration country is Italy.
Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 8:02 PM UTC. This page is refreshed at most every 12 hours.
Go further
The trace goes to 85.94.192.1, the first address of 85.94.192.0/19. 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 (35 prefixes)
| Prefix | Addresses |
|---|---|
| 5.144.160.0/20 | 4,096 |
| 37.9.224.0/20 | 4,096 |
| 37.9.239.0/24 | 256 |
| 45.143.157.0/24 | 256 |
| 46.16.168.0/21 | 2,048 |
| 77.83.64.0/24 | 256 |
| 77.83.65.0/24 | 256 |
| 80.241.140.0/22 | 1,024 |
| 80.241.142.0/24 | 256 |
| 85.94.192.0/19 | 8,192 |
| 85.94.208.0/20 | 4,096 |
| 93.157.185.0/24 | 256 |
| 95.174.0.0/19 | 8,192 |
| 185.24.104.0/22 | 1,024 |
| 185.47.108.0/22 | 1,024 |
| 185.146.252.0/22 | 1,024 |
| 185.220.244.0/22 | 1,024 |
| 185.220.244.0/23 | 512 |
| 185.220.246.0/24 | 256 |
| 185.222.68.0/23 | 512 |
| 185.222.70.0/23 | 512 |
| 185.228.250.0/24 | 256 |
| 185.255.138.0/24 | 256 |
| 193.17.32.0/24 | 256 |
| 193.200.3.0/24 | 256 |
| 212.25.160.0/19 | 8,192 |
| 212.35.192.0/19 | 8,192 |
| 212.66.224.0/19 | 8,192 |
| 213.171.160.0/19 | 8,192 |
| 217.64.192.0/20 | 4,096 |
| 217.64.195.0/24 | 256 |
| 217.168.224.0/20 | 4,096 |
| 217.168.224.0/23 | 512 |
| 217.168.226.0/23 | 512 |
| 217.194.0.0/20 | 4,096 |
IPv6 prefixes (10 prefixes)
| Prefix |
|---|
| 2001:4b78::/29 |
| 2001:4b78::/32 |
| 2a02:e9::/32 |
| 2a02:ea::/32 |
| 2a04:2700::/29 |
| 2a05:b6c0::/32 |
| 2a05:b6c1::/32 |
| 2a05:be80::/29 |
| 2a0b:fd40::/29 |
| 2a0d:b000::/29 |
Neighbours
Upstreams (transit or peers) (63)
| AS | Network | Visibility |
|---|---|---|
| AS2914 | NTT America, Inc. | 47,365 |
| AS6939 | Hurricane Electric LLC | 38,350 |
| AS1299 | Arelion Sweden AB | 37,263 |
| AS174 | Cogent Communications, LLC | 8,861 |
| AS7195 | EDGEUNO S.A.S | 2,336 |
| AS3303 | Swisscom (Schweiz) AG | 1,740 |
| AS8220 | COLT Technology Services Group Limited | 1,369 |
| AS137409 | GSL Networks Pty LTD | 1,312 |
| AS5405 | Inter.link GmbH | 1,216 |
| AS9002 | RETN Limited | 854 |
| AS31133 | PJSC MegaFon | 605 |
| AS30844 | Liquid Telecommunications Ltd | 472 |
| AS37100 | SEACOM Limited | 419 |
| AS50673 | Serverius Holding B.V. | 373 |
| AS13030 | Init7 (Switzerland) Ltd. | 285 |
| AS24961 | WIIT AG | 267 |
| AS43727 | JSC KVANT-TELEKOM | 258 |
| AS8218 | Zayo Infrastructure France SA | 245 |
| AS24482 | SG.GS | 223 |
| AS20764 | CJSC RASCOM | 219 |
| AS39686 | - | 167 |
| AS60171 | AFR-IX TELECOM S.A. | 165 |
| AS34927 | iFog GmbH | 150 |
| AS25091 | IP-Max SA | 110 |
| AS4455 | IX Reach Ltd | 108 |
| AS6204 | INTERKVM HOST SRL | 87 |
| AS47147 | Anexia Cloud Solutions GmbH | 86 |
| AS9009 | M247 Europe SRL | 70 |
| AS28716 | - | 66 |
| AS34019 | Hivane Association | 62 |
The 30 most visible of 63.
Downstreams (customers) (205)
| AS | Network | Visibility |
|---|---|---|
| AS3303 | Swisscom (Schweiz) AG | 1,530 |
| AS6939 | Hurricane Electric LLC | 1,288 |
| AS174 | Cogent Communications, LLC | 967 |
| AS202448 | mvps MVPS LTD | 436 |
| AS2914 | NTT America, Inc. | 407 |
| AS60087 | Netsons s.r.l. | 355 |
| AS50627 | Frosinone Wireless S.R.L. | 265 |
| AS206539 | hellotel HelloTel Telecomunicazioni srl | 263 |
| AS212768 | iss Infosystem Security s.r.l. | 263 |
| AS214360 | SIA Network Operations Center | 262 |
| AS6831 | - | 259 |
| AS15605 | - | 221 |
| AS199699 | - | 209 |
| AS1299 | Arelion Sweden AB | 192 |
| AS29119 | - | 185 |
| AS7195 | EDGEUNO S.A.S | 143 |
| AS8220 | COLT Technology Services Group Limited | 141 |
| AS200424 | Alessandro Coratelli trading as CODEMA | 140 |
| AS20473 | The Constant Company, LLC | 69 |
| AS57463 | NetIX NetIX Communications JSC | 64 |
| AS137409 | GSL Networks Pty LTD | 53 |
| AS9002 | RETN Limited | 51 |
| AS21100 | ROUTE 95 LLC | 39 |
| AS32787 | Akamai Technologies, Inc. | 39 |
| AS3269 | Telecom Italia S.p.A. | 31 |
| AS5405 | - | 31 |
| AS9009 | M247 Europe SRL | 31 |
| AS30844 | Liquid Telecommunications Ltd | 31 |
| AS57304 | JSC "RetnNet" | 30 |
| AS8781 | - | 25 |
The 30 most visible of 205.
979 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.