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Autonomous System

AS4213 · Krypt Technologies

Overview

AS4213 is announced on the Internet: RIPE RIS route collectors currently see 106 IPv4 prefixes and 18 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 60,928 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 16 upstream neighbours (transit providers or peers) and 34 downstream neighbours (customers or networks it carries). Its most visible upstreams are Arelion Sweden AB (AS1299), Cogent Communications, LLC (AS174), and GTT Communications Inc. (AS3257). AS4213 was assigned by ARIN, and its registration country is United States.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 4:11 AM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 66.172.0.1

The trace goes to 66.172.0.1, the first address of 66.172.0.0/18. 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 (106 prefixes)

PrefixAddresses
64.113.24.0/23512
64.113.26.0/23512
64.239.224.0/24256
64.239.226.0/24256
66.172.0.0/1816,384
66.172.2.0/24256
66.172.4.0/24256
66.172.7.0/24256
66.172.8.0/24256
66.172.9.0/24256
66.172.10.0/23512
66.172.16.0/24256
66.172.17.0/24256
66.172.26.0/24256
66.172.28.0/23512
66.172.30.0/24256
66.172.31.0/24256
66.172.35.0/24256
66.172.36.0/23512
66.172.42.0/23512
66.172.44.0/23512
66.172.48.0/24256
66.172.49.0/24256
66.172.50.0/23512
66.172.52.0/23512
66.172.54.0/23512
66.172.56.0/23512
66.172.57.0/24256
66.172.58.0/23512
66.172.63.0/24256
66.180.192.0/204,096
66.186.32.0/212,048
66.186.33.0/24256
66.186.34.0/24256
66.186.40.0/24256
66.186.46.0/23512
66.186.50.0/24256
66.186.51.0/24256
66.186.52.0/24256
66.186.53.0/24256
66.186.62.0/23512
66.201.40.0/23512
66.201.40.0/24256
66.211.96.0/204,096
66.211.97.0/24256
66.211.98.0/24256
66.211.99.0/24256
66.211.100.0/24256
66.211.101.0/24256
66.211.106.0/24256
66.211.108.0/24256
66.211.109.0/24256
67.43.151.0/24256
67.198.213.0/24256
67.198.230.0/23512
67.198.230.0/24256
67.229.241.0/24256
67.229.254.0/23512
67.229.254.0/24256
67.229.255.0/24256
69.194.0.0/221,024
69.194.0.0/23512
69.194.2.0/24256
69.194.3.0/24256
74.112.254.0/24256
74.222.131.0/24256
74.222.140.0/24256
74.222.142.0/24256
74.222.147.0/24256
74.222.168.0/23512
74.222.169.0/24256
76.8.16.0/204,096
76.8.18.0/24256
76.8.28.0/24256
76.8.30.0/24256
97.64.96.0/24256
97.64.98.0/24256
97.64.99.0/24256
98.126.101.0/24256
98.126.102.0/24256
98.126.103.0/24256
98.126.153.0/24256
98.126.201.0/24256
107.6.233.0/24256
107.6.247.0/24256
107.6.248.0/23512
130.51.48.0/23512
130.51.50.0/23512
162.0.152.0/24256
162.0.154.0/24256
170.76.216.0/24256
174.139.40.0/24256
184.164.196.0/24256
184.164.197.0/24256
205.186.78.0/24256
209.11.249.0/24256
209.131.72.0/212,048
209.131.72.0/221,024
209.151.224.0/198,192
209.151.237.0/24256

Showing the first 100 of 106, in address order. Complete list on RIPEstat

IPv6 prefixes (18 prefixes)

Prefix
2602:2f3::/40
2602:f983:4::/48
2602:f983:6::/48
2605:bb00:2000::/35
2605:bb00:6000::/35
2605:bb00:c000::/40
2605:bb00:c100::/40
2605:bb00:c200::/40
2605:bb00:c300::/40
2605:bb00:c400::/40
2605:bb00:c500::/40
2605:bb00:c600::/40
2605:bb00:c614::/48
2607:dc80::/32
2607:f820::/32
2607:f820::/35
2607:f820:2000::/35
2620:129:9002::/48

Neighbours

Upstreams (transit or peers) (16)

ASNetworkVisibility
AS1299Arelion Sweden AB3,201
AS174Cogent Communications, LLC2,501
AS3257GTT Communications Inc.1,643
AS6939Hurricane Electric LLC1,148
AS6461Zayo Bandwidth397
AS3223Voxility LLP258
AS6057Administracion Nacional de Telecomunicaciones42
AS286GTT Communications Inc.31
AS137409GSL Networks Pty LTD19
AS7575Australian Academic and Research Network (AARNet)18
AS7195EDGEUNO S.A.S17
AS9002RETN Limited12
AS37468-11
AS394256-4
AS9498BHARTI Airtel Ltd.2
AS20326-1

Downstreams (customers) (34)

ASNetworkVisibility
AS17252Colocation America Corporation541
AS40475Applied Operations, LLC480
AS64267Sprious LLC389
AS398223Pomona Consulting LLC373
AS35908Krypt Technologies365
AS395506KODIAK NETWORKS, INC.353
AS6623CBS Interactive Inc.349
AS401197kCore Cloud LLC341
AS36007Kamatera, Inc.320
AS397630Blazing SEO, LLC283
AS46378-271
AS397804-261
AS54252-258
AS393553-258
AS394471-258
AS400064-257
AS19909-256
AS397259-256
AS401092-256
AS40891-254
AS18898-252
AS32544-250
AS48631-250
AS397169-244
AS7342VeriSign Infrastructure & Operations105
AS20264-98
AS64260-94
AS11374-93
AS36504-63
AS30714-51

The 30 most visible of 34.

11 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.