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 1,936
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
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 1,936 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
89.203.197.145 ██████████ 44
195.146.100.73 ██████████ 43
85.13.80.72 ████████ 43
89.203.160.25 ██████████ 42
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.
AS51185 MainStreaming SpA
AS51331 SychrovNET s.r.o
AS51449 Kabelova televize Usti nad Orlici, spol. s r. o.
AS51524 Ales Tesacek
AS53062 ALT | GRUPO BRASIL TECPAR
AS5405 Inter.link GmbH
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
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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
89.203.145.125 AS25512 CD-Telematika a.s. 6.20ms from Prague, CZ
81.19.39.66 AS25512 CD-Telematika a.s. 0.31ms from Prague, CZ
89.203.168.81 AS25512 CD-Telematika a.s. 4.29ms from Prague, CZ
89.203.150.1 AS25512 CD-Telematika a.s. 4.48ms from Prague, CZ
89.203.216.1 AS25512 CD-Telematika a.s. 3.31ms from Prague, CZ
89.203.139.129 AS25512 CD-Telematika a.s. 3.14ms from Prague, CZ
89.203.137.45 AS25512 CD-Telematika a.s. 0.60ms from Prague, CZ
81.19.33.101 AS25512 CD-Telematika a.s. 0.24ms from Prague, CZ
89.203.206.1 AS25512 CD-Telematika a.s. 3.10ms from Prague, CZ
212.11.127.89 AS25512 CD-Telematika a.s. 0.92ms from Prague, CZ
82.202.94.250 AS25512 CD-Telematika a.s. 4.21ms from Prague, CZ
82.202.92.5 AS25512 CD-Telematika a.s. 0.37ms from Prague, CZ
85.13.92.253 AS25512 CD-Telematika a.s. 2.61ms from Prague, CZ
85.13.67.1 AS25512 CD-Telematika a.s. 2.07ms from Prague, CZ
131.117.199.1 AS25512 CD-Telematika a.s. 0.38ms from Prague, CZ
85.13.64.9 AS25512 CD-Telematika a.s. 4.53ms from Prague, CZ
82.202.118.178 AS25512 CD-Telematika a.s. 0.88ms from Prague, CZ
212.11.116.33 AS25512 CD-Telematika a.s. 2.56ms from Prague, CZ
81.19.35.49 AS25512 CD-Telematika a.s. 0.27ms from Prague, CZ
82.117.134.254 AS25512 CD-Telematika a.s. 2.87ms from Prague, CZ
81.19.38.161 AS25512 CD-Telematika a.s. 0.28ms from Prague, CZ
89.203.142.205 AS25512 CD-Telematika a.s. 0.59ms from Prague, CZ
85.13.96.61 AS25512 CD-Telematika a.s. 0.27ms from Prague, CZ
82.202.71.42 AS25512 CD-Telematika a.s. 0.74ms from Prague, CZ
82.202.116.129 AS25512 CD-Telematika a.s. 1.71ms 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
82.170.88.152 AS1136 KPN B.V. 2.39ms from Amsterdam, NL
84.37.173.248 AS3257 GTT Communications Inc. 1.29ms from Amsterdam, NL
198.46.86.72 AS54641 InMotion Hosting, Inc. 0.33ms from Ashburn, US
77.183.182.200 AS6805 Telefonica Germany GmbH & Co.OHG 3.14ms from Berlin, DE
20.230.109.8 AS8075 Microsoft Corporation 0.25ms from Boydton, US
82.76.51.8 AS8708 DIGI ROMANIA S.A. 2.05ms from Bucharest, RO
181.93.17.216 AS7303 Telecom Argentina S.A. 1.18ms from Buenos Aires, AR
108.210.14.40 AS7018 AT&T Enterprises, LLC 9.44ms from Chicago, US
34.27.80.216 AS396982 Google LLC 0.11ms from Council Bluffs, US
132.164.215.56 AS8075 Microsoft Corporation 0.18ms from Dublin, IE
2.204.45.216 AS3209 Vodafone GmbH 7.57ms from Frankfurt am Main, DE
120.220.201.216 AS9808 China Mobile Communications Group Co., Ltd. 0.38ms from Jinan, CN
46.173.140.8 AS34743 NASHNET LTD 0.50ms from Kyiv, UA
116.3.241.152 AS4837 CHINA UNICOM China169 Backbone 8.21ms from Liaoyang, CN
23.121.37.216 AS7018 AT&T Enterprises, LLC 10.60ms from Miami, US
82.185.193.232 AS3269 Telecom Italia S.p.A. 4.98ms from Milan, IT
130.41.1.200 AS394089 Google LLC 0.10ms from Mumbai, IN
115.148.102.232 AS4134 CHINANET-BACKBONE 8.77ms from Nanchang, CN
71.183.0.88 AS701 Verizon Business 10.82ms from New York City, US
211.217.45.104 AS4766 Korea Telecom 3.26ms from Seoul, KR
222.113.109.88 AS4766 Korea Telecom 5.42ms from Seoul, KR
5.77.207.168 AS44395 Ucom CJSC 0.14ms from Yerevan, AM
24.62.35.136 AS7922 Comcast Cable Communications, LLC 7.23ms from Boston, US
142.251.161.88 AS15169 Google LLC 1.20ms from Council Bluffs, US
168.194.75.40 AS264764 Innova Outsourcing S.A 0.30ms from Guatemala City, GT

Traceroute

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

$
traceroute -a -n -q1 -m8 89.203.228.12
traceroute to 89.203.228.12 (89.203.228.12): 8 hops max, 52 byte packets
2 *
3 *
4 *
6 *
7 *
8 *
Measurement taken from IPinfo ProbeNet in Des Moines, 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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