Autonomous System details

AS25512

CD-Telematika a.s.  ·  cdt.cz

Czechia

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AS25512 – CD-Telematika a.s.

Field Value
Country Czechia
Website cdt.cz
Hosted domains 1,957
IPv4 addresses 117,760
IPv6 addresses 79,228,162,514,264,337,593,543,950,336
ASN type Hosting
Registry ripe
Allocated 23 years ago on Dec 17, 2002
Updated 8 months ago on Jul 29, 2025

IP Ranges

Netblock Company Num of IPs
89.203.128.0/17 CD-Telematika a.s. 32,768
82.202.64.0/18 CD-Telematika a.s. 16,384
85.13.64.0/18 CD-Telematika a.s. 16,384
213.235.128.0/18 CD-Telematika a.s. 16,384
82.117.128.0/19 CD-Telematika a.s. 8,192
195.146.96.0/19 CD-Telematika a.s. 8,192
212.11.96.0/19 CD-Telematika a.s. 8,192
81.19.32.0/20 CD-Telematika a.s. 4,096
85.184.16.0/20 CD-Telematika a.s. 4,096
131.117.192.0/21 CD-Telematika a.s. 2,048
185.134.0.0/22 CD-Telematika a.s. 1,024
85.209.124.0/23 FIBER CONNECTIONS s.r.o. 512
91.234.162.0/23 Jiri Pondelicek 512

Netblock Company
2001:1a48::/32 CD-Telematika a.s.
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WHOIS Details

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                                                ASHandle:       AS25512
                                                OrgID:          AS25512
                                                ASName:         AS25512
                                                ASNumber:       AS25512
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 1,957 domain names hosted across 544 IP addresses on this ASN.

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IP Address Domain Domains on this IP
81.19.42.5 ██████████ 95
82.202.105.206 ██████████ 94
89.203.160.25 █████████ 45
89.203.197.145 ██████████ 45
195.146.100.73 ██████████ 43
85.13.80.72 ██████████ 42
81.19.42.107 ██████████ 42
195.146.111.115 ██████████ 41
212.11.104.13 ██████████ 40
81.19.42.113 ██████████ 40

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Peers

There are 55 peers for this ASN.

Peers Name
AS1239 Cogent Communications, LLC
AS1299 Arelion Sweden AB
AS13335 Cloudflare, Inc.
AS14840 BR.Digital Telecom
AS16509 Amazon.com, Inc.
AS174 Cogent Communications, LLC
AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS197550 Internet4you.cz, spol. s r.o.
AS198150 SIACOM JSC
AS200355 CadcaNet plus s. r. o.
AS200678 Komplet NET s.r.o.
AS200828 TERMS a.s.
AS20609 KAZA.cz s.r.o.
AS206159 Fresh Data s.r.o.
AS20708 SKODA AUTO a.s.
AS21215 UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd
AS212483 LEVEL EIGHTY-SIX COMMUNICATIONS LTD
AS213387 TeSuNet s.r.o.
AS216450 Letiste Praha, a. s.
AS22356 Durand do Brasil Ltda
AS24482 SG.GS
AS29504 Freenet Liberec, z.s.
AS3161 IT PROFI s.r.o.
AS32590 Valve Corporation
AS33891 Core-Backbone GmbH
AS35046 OMEGA plus Chrudim s.r.o.
AS36236 NetActuate, Inc
AS39120 Convergenze S.p.A.
AS40994 Hohl IT e.U.
AS43507 RETE internet, s.r.o.
AS43614 Economia a.s.
AS44306 OMONIA d.o.o.
AS4455 IX Reach Ltd
AS47131 PH, spol. s r. o.
AS47232 ISP Alliance a.s.
AS47868 AS SUPRO-NET
AS48417 ITS akciova spolecnost
AS49544 i3D.net B.V
AS50975 KYOCERA AVX Components s.r.o.
AS51184 Fonira Telekom GmbH
AS51331 SychrovNET s.r.o
AS51449 Kabelova televize Usti nad Orlici, spol. s r. o.
AS51524 Ales Tesacek
AS54113 Fastly, Inc.
AS56450 Alberon Letohrad s.r.o
AS56717 OG Soft s.r.o.
AS56827 mirnet s.r.o.
AS57463 NetIX Communications JSC
AS60275 RVTech s.r.o.
AS6204 INTERKVM HOST SRL
AS6461 Zayo Bandwidth
AS6663 Euroweb Romania S.R.L.
AS6881 NIX.CZ z.s.p.o.
AS6939 Hurricane Electric LLC
AS8218 Zayo Infrastructure France SA
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ASN API & Database

Upstreams

There are 4 upstreams for this ASN.

upstreams Name
AS1299 Arelion Sweden AB
AS174 Cogent Communications, LLC
AS6461 Zayo Bandwidth
AS6939 Hurricane Electric LLC
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ASN API & Database

Downstreams

There are 28 downstreams for this ASN.

Downstreams Name
AS1299 Arelion Sweden AB
AS174 Cogent Communications, LLC
AS197550 Internet4you.cz, spol. s r.o.
AS200355 CadcaNet plus s. r. o.
AS200678 Komplet NET s.r.o.
AS200828 TERMS a.s.
AS20609 KAZA.cz s.r.o.
AS206159 Fresh Data s.r.o.
AS20708 SKODA AUTO a.s.
AS213387 TeSuNet s.r.o.
AS216450 Letiste Praha, a. s.
AS3161 IT PROFI s.r.o.
AS35046 OMEGA plus Chrudim s.r.o.
AS43507 RETE internet, s.r.o.
AS43614 Economia a.s.
AS47131 PH, spol. s r. o.
AS47868 AS SUPRO-NET
AS48417 ITS akciova spolecnost
AS50975 KYOCERA AVX Components s.r.o.
AS51331 SychrovNET s.r.o
AS51449 Kabelova televize Usti nad Orlici, spol. s r. o.
AS51524 Ales Tesacek
AS56450 Alberon Letohrad s.r.o
AS56717 OG Soft s.r.o.
AS56827 mirnet s.r.o.
AS60275 RVTech s.r.o.
AS6461 Zayo Bandwidth
AS6881 NIX.CZ z.s.p.o.
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Pingable IPs

272 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
89.203.130.6 AS25512 CD-Telematika a.s. 3.92ms from Prague, CZ
213.235.158.22 AS25512 CD-Telematika a.s. 6.87ms from Prague, CZ
2001:1a48:2a:ffff::1 AS25512 CD-Telematika a.s. 1.69ms from Prague, CZ
89.203.179.129 AS25512 CD-Telematika a.s. 5.88ms from Prague, CZ
89.203.206.1 AS25512 CD-Telematika a.s. 3.11ms from Prague, CZ
81.19.34.9 AS25512 CD-Telematika a.s. 0.29ms from Prague, CZ
85.13.107.252 AS25512 CD-Telematika a.s. 0.46ms from Prague, CZ
89.203.240.2 AS25512 CD-Telematika a.s. 5.53ms from Prague, CZ
89.203.205.161 AS25512 CD-Telematika a.s. 8.72ms from Prague, CZ
213.235.183.93 AS25512 CD-Telematika a.s. 0.68ms from Prague, CZ
82.202.123.5 AS25512 CD-Telematika a.s. 4.31ms from Prague, CZ
82.202.114.1 AS25512 CD-Telematika a.s. 7.16ms from Prague, CZ
89.203.165.85 AS25512 CD-Telematika a.s. 3.98ms from Prague, CZ
82.117.155.254 AS25512 CD-Telematika a.s. 3.83ms from Prague, CZ
2001:1a48:24:101::4 AS25512 CD-Telematika a.s. 0.35ms from Prague, CZ
195.146.105.153 AS25512 CD-Telematika a.s. 0.32ms from Prague, CZ
89.203.249.241 AS25512 CD-Telematika a.s. 0.45ms from Prague, CZ
212.11.110.1 AS25512 CD-Telematika a.s. 2.52ms from Prague, CZ
2001:1a48:ffff::2e2 AS25512 CD-Telematika a.s. 0.25ms from Ceske Budejovice, CZ
89.203.158.1 AS25512 CD-Telematika a.s. 3.35ms from Prague, CZ
85.13.116.94 AS25512 CD-Telematika a.s. 0.29ms from Prague, CZ
2001:1a48:1111:2::3 AS25512 CD-Telematika a.s. 0.37ms from Prague, CZ
213.235.191.1 AS25512 CD-Telematika a.s. 3.25ms from Prague, CZ
2001:1a48:a100::1 AS25512 CD-Telematika a.s. 1.04ms from Prague, CZ
81.19.38.161 AS25512 CD-Telematika a.s. 0.29ms from Prague, CZ

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
54.85.59.184 AS14618 Amazon.com, Inc. 0.49ms from Ashburn, US
44.232.53.88 AS16509 Amazon.com, Inc. 0.17ms from Boardman, US
124.148.83.152 AS7545 TPG Telecom Limited 1.47ms from Brisbane, AU
66.68.167.56 AS11427 Charter Communications Inc 5.20ms from Dallas, US
106.195.121.120 AS45609 Bharti Airtel Ltd. AS for GPRS Service 5.79ms from Delhi, IN
14.161.168.184 AS45899 VNPT Corp 2.32ms from Ho Chi Minh City, VN
89.130.131.72 AS12479 Orange Espagne SA 8.06ms from Madrid, ES
190.33.85.24 AS11556 Cable & Wireless Panama 1.33ms from Panama, PA
213.100.175.104 AS1257 Tele2 Sverige AB 12.08ms from Riga, LV
54.183.49.216 AS16509 Amazon.com, Inc. 0.14ms from San Jose, US
38.50.95.184 AS14979 Aeronet Wireless 1.10ms from San Juan, PR
191.23.77.216 AS26599 TELEFÔNICA BRASIL S.A 2.94ms from São Paulo, BR
174.91.24.8 AS577 Bell Canada 3.15ms from Toronto, CA
41.182.203.136 AS36996 Telecom Namibia 13.12ms from Windhoek, NA
66.188.33.40 AS20115 Charter Communications LLC 10.92ms from Chicago, US
175.210.195.232 AS4766 Korea Telecom 0.72ms from Incheon, KR
170.31.106.40 AS17094 Mutual of Omaha Insurance Company 5.64ms from Kansas City, US
165.201.8.88 AS3446 State of Kansas 6.78ms from Kansas City, US
168.187.148.104 AS6412 Gulfnet International KEMS LLC 1.59ms from Kuwait City, KW
85.175.247.120 AS12389 PJSC Rostelecom 17.92ms from Moscow, RU
112.155.231.104 AS17858 LG POWERCOMM 1.86ms from Seoul, KR
64.33.238.72 AS20014 West River Cooperative Telephone Company 12.46ms from Sioux Falls, US
175.173.58.136 AS4837 CHINA UNICOM China169 Backbone 8.90ms from Tieling, CN
118.20.247.72 AS4713 NTT DOCOMO BUSINESS,Inc. 11.78ms from Tokyo, JP
197.6.237.72 AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom) 15.47ms from Tunis, TN

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

$
traceroute -a -n -q1 -f3 195.146.107.191
traceroute to 195.146.107.191 (195.146.107.191): 64 hops max, 52 byte packets
4 *
5 *
Measurement taken from IPinfo ProbeNet in Prague, CZ
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS25512 at robtex.

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