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Autonomous System

AS21497 · PrJSC "VF UKRAINE"

Overview

AS21497 is announced on the Internet: RIPE RIS route collectors currently see 168 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 550,144 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 95 upstream neighbours (transit providers or peers) and 96 downstream neighbours (customers or networks it carries). Its most visible upstreams are NTT America, Inc. (AS2914), GTT Communications Inc. (AS3257), and IDDQD-AS (AS1273). AS21497 was assigned by RIPE NCC, and its registration country is Ukraine.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 3:52 AM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 31.144.0.1

The trace goes to 31.144.0.1, the first address of 31.144.0.0/16. 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 (168 prefixes)

PrefixAddresses
31.12.128.0/1732,768
31.12.128.0/1816,384
31.144.0.0/1665,536
31.144.0.0/1732,768
31.144.0.0/1816,384
31.144.0.0/198,192
31.144.32.0/198,192
31.144.64.0/1816,384
31.144.64.0/198,192
31.144.96.0/198,192
31.144.128.0/1732,768
31.144.128.0/1816,384
31.144.128.0/198,192
31.144.160.0/198,192
31.144.192.0/1816,384
31.144.192.0/198,192
31.144.224.0/198,192
46.133.0.0/1665,536
46.133.0.0/1732,768
46.133.0.0/1816,384
46.133.0.0/198,192
46.133.32.0/198,192
46.133.64.0/1816,384
46.133.64.0/198,192
46.133.96.0/198,192
46.133.128.0/1732,768
46.133.128.0/1816,384
46.133.128.0/198,192
46.133.160.0/198,192
46.133.192.0/1816,384
46.133.192.0/198,192
46.133.224.0/198,192
62.221.52.0/24256
77.52.0.0/1665,536
77.52.0.0/1732,768
77.52.0.0/1816,384
77.52.24.0/24256
77.52.64.0/1816,384
77.52.128.0/1732,768
77.52.128.0/1816,384
77.52.192.0/1816,384
77.239.160.0/212,048
78.111.220.0/23512
78.111.222.0/23512
80.255.64.0/204,096
80.255.64.0/212,048
80.255.72.0/212,048
81.95.176.0/212,048
81.95.184.0/23512
81.95.188.0/23512
81.95.190.0/23512
85.114.192.0/212,048
85.114.200.0/212,048
88.214.64.0/1816,384
88.214.64.0/198,192
88.214.96.0/198,192
89.105.224.0/212,048
89.105.236.0/221,024
89.105.240.0/23512
89.105.242.0/23512
89.105.244.0/23512
89.105.249.0/24256
89.105.250.0/23512
89.105.252.0/221,024
89.209.0.0/1665,536
89.209.0.0/1732,768
89.209.0.0/1816,384
89.209.0.0/198,192
89.209.32.0/198,192
89.209.64.0/1816,384
89.209.64.0/198,192
89.209.96.0/198,192
89.209.128.0/1732,768
89.209.128.0/1816,384
89.209.128.0/198,192
89.209.160.0/198,192
89.209.192.0/1816,384
89.209.192.0/198,192
89.209.224.0/198,192
93.127.1.0/24256
93.127.64.0/204,096
93.127.80.0/204,096
93.127.96.0/221,024
93.127.100.0/221,024
93.127.104.0/221,024
93.127.108.0/221,024
93.127.112.0/221,024
93.127.116.0/221,024
93.127.120.0/221,024
93.127.124.0/221,024
93.178.192.0/23512
93.178.194.0/23512
93.178.196.0/23512
93.178.198.0/23512
93.178.200.0/221,024
93.178.209.0/24256
93.178.212.0/221,024
93.178.224.0/23512
93.178.226.0/23512
93.178.228.0/23512

Showing the first 100 of 168, in address order. Complete list on RIPEstat

IPv6 prefixes (1 prefix)

Prefix
2a00:f50::/32

Neighbours

Upstreams (transit or peers) (95)

ASNetworkVisibility
AS2914NTT America, Inc.3,094
AS3257GTT Communications Inc.2,720
AS1273IDDQD-AS2,496
AS6939Hurricane Electric LLC583
AS34549meerfarbig GmbH & Co. KG318
AS5405Inter.link GmbH313
AS6461Zayo Bandwidth307
AS25091IP-Max SA274
AS34019Hivane Association248
AS4230CLARO S.A.234
AS35625Eurofiber France SAS233
AS34177Celeste SAS226
AS35280F5 Networks SARL222
AS34927iFog GmbH207
AS3935131173 Services AB199
AS20485Joint Stock Company TransTeleCom189
AS29691Nine Internet Solutions AG187
AS12779IT.Gate S.p.A.185
AS24961WIIT AG185
AS41327Fiber Telecom S.p.A.178
AS8298IPng Networks GmbH171
AS3303Swisscom (Schweiz) AG163
AS29075IELO-LIAZO SERVICES SAS159
AS48362Stadtwerke Feldkirch152
AS37497Network Platforms (PTY) LTD150
AS20764CJSC RASCOM148
AS14840BR.Digital Telecom142
AS8218Zayo Infrastructure France SA137
AS61049Exascale Ltd133
AS12637SEEWEB s.r.l.126

The 30 most visible of 95.

Downstreams (customers) (96)

ASNetworkVisibility
AS12883PRIVATE JOINT-STOCK COMPANY "FARLEP-INVEST"1,497
AS29491KIEVLINE LLC1,139
AS12593LLC "UKRCOM"1,089
AS31148PRIVATE JOINT-STOCK COMPANY "FARLEP-INVEST"982
AS6702Science Production Company "Trifle" Ltd.954
AS25372IT Consulting L.L.C.674
AS47359"Tvoi Net" Ltd.523
AS34265SilverTelecom Ltd.513
AS6703PRIVATE JOINT-STOCK COMPANY "FARLEP-INVEST"499
AS202443WINE AND FOOD PARTNERS LTD370
AS43309GIPERNET LLC369
AS57962-312
AS42799-281
AS208139-279
AS198429-278
AS34143-276
AS205722-270
AS42719-269
AS8813-267
AS25082-267
AS52151-267
AS31062-266
AS31504-266
AS31589-266
AS44616-266
AS47940-266
AS59602-266
AS210068-266
AS212233-266
AS34118-264

The 30 most visible of 96.

157 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.