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 1,937
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 5 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

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 1,937 domain names hosted across 533 IP addresses on this ASN.

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IP Address Domain Domains on this IP
81.19.42.5 ██████████ 96
82.202.105.206 ██████████ 94
89.203.160.25 ██████████ 45
89.203.197.145 ██████████ 44
195.146.100.73 ██████████ 43
85.13.80.72 ████████ 43
81.19.42.107 ██████████ 42
195.146.111.115 ██████████ 41
81.19.42.113 ██████████ 40
212.11.104.13 ██████████ 36

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Peers

There are 53 peers for this ASN.

Peers Name
AS1299 Arelion Sweden AB
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.
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.
AS43733 Viva Armenia CJSC
AS44306 OMONIA d.o.o.
AS4455 IX Reach Ltd
AS47131 PH, spol. s r. o.
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
AS53062 ALT | GRUPO BRASIL TECPAR
AS54113 Fastly, Inc.
AS56450 Alberon Letohrad s.r.o
AS56717 OG Soft s.r.o.
AS56827 mirnet s.r.o.
AS57463 NetIX Communications JSC
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
AS9498 BHARTI Airtel Ltd.
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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 26 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.
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.
AS6461 Zayo Bandwidth
AS6881 NIX.CZ z.s.p.o.
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ASN API & Database

Pingable IPs

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

IP Address ASN Details
82.202.117.225 AS25512 CD-Telematika a.s. 7.45ms from Prague, CZ
89.203.227.1 AS25512 CD-Telematika a.s. 4.50ms from Prague, CZ
89.203.198.2 AS25512 CD-Telematika a.s. 0.49ms from Prague, CZ
85.13.127.129 AS25512 CD-Telematika a.s. 0.26ms from Prague, CZ
82.117.157.1 AS25512 CD-Telematika a.s. 4.65ms from Prague, CZ
89.203.240.1 AS25512 CD-Telematika a.s. 5.50ms from Prague, CZ
85.13.69.1 AS25512 CD-Telematika a.s. 3.63ms from Prague, CZ
195.146.111.98 AS25512 CD-Telematika a.s. 1.39ms from Prague, CZ
213.235.159.14 AS25512 CD-Telematika a.s. 7.00ms from Prague, CZ
82.202.90.1 AS25512 CD-Telematika a.s. 0.42ms from Prague, CZ
89.203.168.97 AS25512 CD-Telematika a.s. 4.29ms from Prague, CZ
82.202.118.242 AS25512 CD-Telematika a.s. 0.90ms from Prague, CZ
89.203.250.12 AS25512 CD-Telematika a.s. 0.45ms from Prague, CZ
195.146.117.55 AS25512 CD-Telematika a.s. 2.72ms from Prague, CZ
82.117.136.129 AS25512 CD-Telematika a.s. 0.28ms from Prague, CZ
85.13.85.249 AS25512 CD-Telematika a.s. 2.57ms from Prague, CZ
85.13.91.141 AS25512 CD-Telematika a.s. 3.27ms from Prague, CZ
82.117.134.254 AS25512 CD-Telematika a.s. 2.85ms from Prague, CZ
85.13.73.1 AS25512 CD-Telematika a.s. 3.66ms from Prague, CZ
89.203.159.1 AS25512 CD-Telematika a.s. 3.41ms from Prague, CZ
82.202.116.129 AS25512 CD-Telematika a.s. 1.64ms from Prague, CZ
81.19.39.68 AS25512 CD-Telematika a.s. 0.32ms from Prague, CZ
2001:1a48:2a:ffff::1 AS25512 CD-Telematika a.s. 1.70ms from Prague, CZ
89.203.195.1 AS25512 CD-Telematika a.s. 3.15ms from Prague, CZ
81.19.32.161 AS25512 CD-Telematika a.s. 0.31ms 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
108.32.74.88 AS701 Verizon Business 6.28ms from Ashburn, US
94.67.141.200 AS6799 Ote SA (Hellenic Telecommunications Organisation) 11.11ms from Athens, GR
129.92.59.232 AS668 United States Department of Defense (DoD) 4.20ms from Chicago, US
178.74.239.216 AS49223 EVEREST TV AND RADIO COMPANY LLC 3.00ms from Kyiv, UA
154.87.49.72 AS35916 MULTACOM CORPORATION 0.42ms from Los Angeles, US
79.43.67.248 AS3269 Telecom Italia S.p.A. 5.56ms from Milan, IT
176.96.15.200 AS48515 Praktika Ltd. 5.67ms from Moscow, RU
46.218.143.120 AS15557 Societe Francaise Du Radiotelephone - SFR SA 1.85ms from Paris, FR
172.69.48.88 AS13335 Cloudflare, Inc. 0.12ms from Pittsburgh, US
211.114.7.40 AS4766 Korea Telecom 6.32ms from Seoul, KR
1.40.104.232 AS4804 Microplex PTY LTD 1.59ms from Sydney, AU
102.24.143.8 AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom) 11.90ms from Tunis, TN
5.206.35.56 AS8369 Intersvyaz-2 JSC 3.52ms from Yekaterinburg, RU
125.45.95.72 AS4837 CHINA UNICOM China169 Backbone 3.54ms from Zhengzhou, CN
72.22.133.120 AS14813 Columbus Telecommunications (Barbados) Limited 2.40ms from Bridgetown, BB
78.180.180.104 AS9121 Turk Telekomunikasyon Anonim Sirketi 10.33ms from Bursa, TR
95.82.62.168 AS134729 JOINT POWER TECHNOLOGY LIMITED 1.10ms from Hong Kong, HK
191.204.226.56 AS26599 TELEFÔNICA BRASIL S.A 1.55ms from Osasco, BR
186.179.87.120 AS15311 TELEFONICA EMPRESAS CHILE SA 1.35ms from Santiago, CL
188.123.148.88 AS35805 JSC "Silknet" 3.17ms from Tbilisi, GE
129.97.108.8 AS12093 University of Waterloo 2.23ms from Toronto, CA
96.4.2.120 AS11686 Zayo Bandwidth 5.68ms from Atlanta, US
181.101.118.72 AS7303 Telecom Argentina S.A. 11.26ms from Buenos Aires, AR
116.75.247.24 AS17488 Hathway IP Over Cable Internet 1.81ms from Delhi, IN
18.200.228.56 AS16509 Amazon.com, Inc. 0.31ms from Dublin, IE

Traceroute

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

$
traceroute -a -n -q1 -m5 213.235.161.20
traceroute to 213.235.161.20 (213.235.161.20): 5 hops max, 52 byte packets
1 [AS202422] 37.9.35.3 1.766 ms
3 *
4 *
5 *
Measurement taken from IPinfo ProbeNet in Chicago, US
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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