Skip to content

Autonomous System

AS1257 · Tele2 Sverige AB

Overview

AS1257 is announced on the Internet: RIPE RIS route collectors currently see 386 IPv4 prefixes and 38 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 6,460,416 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 39 upstream neighbours (transit providers or peers) and 342 downstream neighbours (customers or networks it carries). Its most visible upstreams are Arelion Sweden AB (AS1299), Hurricane Electric LLC (AS6939), and Cogent Communications, LLC (AS174). AS1257 was assigned by ARIN, and its registration country is European Union.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 10:57 PM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 83.176.0.1

The trace goes to 83.176.0.1, the first address of 83.176.0.0/12. 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 (386 prefixes)

PrefixAddresses
5.240.0.0/14262,144
5.240.0.0/15131,072
5.242.0.0/15131,072
31.15.32.0/198,192
37.0.128.0/1732,768
37.2.0.0/15131,072
37.196.0.0/14262,144
37.233.64.0/204,096
46.17.184.0/212,048
62.65.0.0/198,192
62.95.0.0/1732,768
62.181.64.0/1816,384
64.139.62.0/23512
77.95.104.0/212,048
77.218.0.0/15131,072
77.233.64.0/198,192
77.233.95.0/24256
78.28.64.0/1816,384
80.73.176.0/204,096
80.170.0.0/1665,536
80.216.0.0/15131,072
81.21.240.0/204,096
81.216.0.0/1665,536
82.26.89.0/24256
82.26.109.0/24256
82.26.114.0/24256
82.26.134.0/24256
82.26.165.0/24256
82.26.167.0/24256
82.26.172.0/24256
82.27.16.0/24256
82.27.19.0/24256
82.29.136.0/24256
82.29.137.0/24256
83.176.0.0/121,048,576
83.176.0.0/198,192
83.176.160.0/198,192
83.176.192.0/1816,384
83.177.128.0/198,192
83.178.128.0/204,096
83.178.160.0/204,096
83.178.208.0/204,096
83.179.0.0/1732,768
83.179.128.0/198,192
83.180.0.0/198,192
83.181.56.0/212,048
83.181.64.0/1816,384
83.181.160.0/204,096
83.187.96.0/198,192
83.187.208.0/204,096
83.188.64.0/1816,384
83.189.104.0/212,048
83.189.192.0/1816,384
83.190.224.0/198,192
83.248.0.0/13524,288
85.194.0.0/1816,384
87.227.0.0/1732,768
88.84.224.0/204,096
88.84.240.0/212,048
88.84.248.0/221,024
88.84.252.0/23512
88.84.254.0/24256
88.84.255.0/24256
88.131.0.0/1665,536
90.128.0.0/121,048,576
90.128.0.0/1816,384
90.130.74.0/24256
90.130.96.0/198,192
90.130.160.0/198,192
90.131.128.0/198,192
90.133.0.0/1732,768
90.133.192.0/198,192
90.133.224.0/204,096
90.134.0.0/198,192
90.135.0.0/1665,536
90.137.0.0/1732,768
90.138.0.0/1665,536
90.139.0.0/1816,384
90.139.64.0/198,192
90.139.128.0/1732,768
90.140.0.0/1665,536
90.141.72.0/221,024
90.142.144.0/212,048
90.142.160.0/198,192
90.142.192.0/1816,384
90.143.64.0/1816,384
90.144.0.0/1665,536
91.95.0.0/1665,536
91.128.0.0/14262,144
91.129.64.0/198,192
91.131.0.0/1732,768
91.195.212.0/23512
91.195.223.0/24256
91.198.164.0/24256
91.198.193.0/24256
91.229.141.0/24256
92.43.32.0/212,048
93.94.208.0/212,048
94.186.0.0/1732,768
95.153.0.0/1816,384

Showing the first 100 of 386, in address order. Complete list on RIPEstat

IPv6 prefixes (38 prefixes)

Prefix
2001:678:54c::/48
2001:678:d5c::/48
2001:678:edc::/48
2001:67c:448::/48
2001:67c:488::/48
2001:67c:c20::/48
2001:67c:10c8::/48
2001:67c:10cc::/48
2001:67c:1118::/48
2001:67c:13f4::/48
2001:67c:1488::/48
2001:67c:15c8::/48
2001:67c:17bc::/48
2001:67c:17dc::/48
2001:67c:17f4::/48
2001:67c:189c::/48
2001:67c:1920::/48
2001:67c:22c8::/48
2001:67c:2650::/48
2001:67c:28c4::/48
2001:67c:2b24::/48
2001:67c:2bd4::/48
2001:67c:2c4c::/48
2001:6f0::/29
2a00:800::/25
2a00:800:233::/48
2a00:800:428::/48
2a00:800:440::/48
2a00:807::/32
2a00:808::/32
2a00:809::/32
2a00:cc8::/32
2a01:1b8::/32
2a01:280:390::/48
2a04:ae00::/26
2a07:4040::/29
2a0a:3740::/29
2a11:cd40:1000::/48

Neighbours

Upstreams (transit or peers) (39)

ASNetworkVisibility
AS1299Arelion Sweden AB62,474
AS6939Hurricane Electric LLC30,834
AS174Cogent Communications, LLC22,923
AS6453TATA COMMUNICATIONS (AMERICA) INC17,853
AS12956TELEFONICA GLOBAL SOLUTIONS SL9,288
AS6762TELECOM ITALIA SPARKLE S.p.A.9,013
AS9002RETN Limited8,368
AS6461Zayo Bandwidth7,074
AS2914NTT America, Inc.6,932
AS3320Deutsche Telekom AG2,015
AS4637Telstra Global1,909
AS6830LibertyGlobal Liberty Global Europe Holding B.V.1,544
AS13030Init7 (Switzerland) Ltd.1,544
AS1273IDDQD-AS1,539
AS8220COLT Technology Services Group Limited1,420
AS33891Core-Backbone GmbH1,407
AS3303Swisscom (Schweiz) AG1,268
AS3491PCCW Global (HK) Ltd.1,146
AS5405Inter.link GmbH1,062
AS2497Internet Initiative Japan Inc.893
AS24961WIIT AG635
AS60068Datacamp Limited549
AS15412Flag Telecom UK Limited532
AS6204INTERKVM HOST SRL502
AS60171AFR-IX TELECOM S.A.411
AS8283Netwerkvereniging Coloclue399
AS3935131173 Services AB375
AS12552GlobalConnect AB268
AS42708Glesys AB261
AS28917Fiord Networks, UAB241

The 30 most visible of 39.

Downstreams (customers) (342)

ASNetworkVisibility
AS1299Arelion Sweden AB11,026
AS174Cogent Communications, LLC6,090
AS6453TATA COMMUNICATIONS (AMERICA) INC4,925
AS6461Zayo Bandwidth4,635
AS12956TELEFONICA GLOBAL SOLUTIONS SL2,915
AS12597Gotalandsnatet AB1,727
AS2914NTT America, Inc.1,631
AS4637Telstra Global1,050
AS50572Nordlo Improve AB972
AS32787Akamai Technologies, Inc.716
AS8240-682
AS201601-629
AS29468-625
AS57084-599
AS42318-593
AS57208-564
AS20943-517
AS3166-512
AS39871-512
AS39840-511
AS41401-501
AS4134No.31,Jin-rong Street492
AS59807Swedbank AB469
AS197603-426
AS34941-419
AS206804-409
AS201906-399
AS207448-388
AS34686-381
AS28854-376

The 30 most visible of 342.

363 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.

Frequently asked questions

How do I find the ASN of an IP address?
Type the address in the BGP viewer: it shows the prefix that covers it, the AS that originates that prefix and the paths seen towards it. A traceroute also names the network of each hop, so you can see every AS a connection crosses.
Why does one company have several ASNs?
Large operators split their network by region, by activity or by history: a cloud may use one number for its backbone and another for a region, and every acquisition brings its own numbers. Each number has its own page, with its own prefixes and neighbours.
Why do prefix counts differ from one site to another?
Each source sees the routing table from different collectors, at a different time, and counts differently: some include prefixes withdrawn in recent weeks, some merge a block and its pieces. This page counts the prefixes RIPE RIS collectors see originated by the network at the end of the latest two-week window, and counts each IPv4 address once.
Is this the list of IP ranges of a cloud provider?
It is what its networks announce, which is what the Internet routes to them. Many providers also publish an official list of ranges per service and region; that list is the reference for firewall rules, because a range can be announced before it is used, or announced by another of their AS numbers.