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 1,947
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 6 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 1,947 domain names hosted across 534 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
85.13.80.72 ██████████ 43
195.146.100.73 ██████████ 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 56 peers for this ASN.

Peers Name
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
AS197019 WEDOS Internet, a.s.
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
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
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 27 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.
AS60275 RVTech s.r.o.
AS6461 Zayo Bandwidth
AS6881 NIX.CZ z.s.p.o.
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ASN API & Database

Pingable IPs

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

IP Address ASN Details
89.203.240.1 AS25512 CD-Telematika a.s. 5.54ms from Prague, CZ
2001:1a48:1a48::a AS25512 CD-Telematika a.s. 0.36ms from Prague, CZ
85.13.88.180 AS25512 CD-Telematika a.s. 5.86ms from Prague, CZ
82.202.114.17 AS25512 CD-Telematika a.s. 7.13ms from Prague, CZ
85.13.92.253 AS25512 CD-Telematika a.s. 2.61ms from Prague, CZ
85.13.82.1 AS25512 CD-Telematika a.s. 2.60ms from Prague, CZ
89.203.168.97 AS25512 CD-Telematika a.s. 4.29ms from Prague, CZ
2001:1a48:8:f000::11 AS25512 CD-Telematika a.s. 2.17ms from Prague, CZ
82.117.143.1 AS25512 CD-Telematika a.s. 2.86ms from Prague, CZ
2001:1a48:0:3::11 AS25512 CD-Telematika a.s. 0.29ms from Prague, CZ
195.146.105.90 AS25512 CD-Telematika a.s. 0.31ms from Prague, CZ
2001:1a48:c:ffff::3 AS25512 CD-Telematika a.s. 5.67ms from Prague, CZ
82.202.64.56 AS25512 CD-Telematika a.s. 0.46ms from Prague, CZ
195.146.96.1 AS25512 CD-Telematika a.s. 0.25ms from Prague, CZ
81.19.35.49 AS25512 CD-Telematika a.s. 0.26ms from Prague, CZ
81.19.44.37 AS25512 CD-Telematika a.s. 0.75ms from Prague, CZ
82.117.158.1 AS25512 CD-Telematika a.s. 5.61ms from Prague, CZ
89.203.218.1 AS25512 CD-Telematika a.s. 3.21ms from Prague, CZ
85.13.78.43 AS25512 CD-Telematika a.s. 0.32ms from Prague, CZ
89.203.191.1 AS25512 CD-Telematika a.s. 3.33ms from Prague, CZ
85.13.119.98 AS25512 CD-Telematika a.s. 0.32ms from Prague, CZ
82.117.140.2 AS25512 CD-Telematika a.s. 0.62ms from Prague, CZ
85.13.77.1 AS25512 CD-Telematika a.s. 0.47ms from Prague, CZ
195.146.101.239 AS25512 CD-Telematika a.s. 0.34ms from Prague, CZ
89.203.169.254 AS25512 CD-Telematika a.s. 3.69ms 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
54.203.7.248 AS16509 Amazon.com, Inc. 0.21ms from Boardman, US
72.107.248.120 AS6167 Verizon Business 17.82ms from Dallas, US
213.95.49.40 AS12337 noris network AG 3.00ms from Frankfurt am Main, DE
62.91.173.56 AS20686 Bisping & Bisping GmbH & Co KG 3.70ms from Frankfurt am Main, DE
91.2.30.104 AS3320 Deutsche Telekom AG 6.85ms from Frankfurt am Main, DE
182.152.198.40 AS17924 SmarTone Mobile Communications Ltd 9.54ms from Hong Kong, HK
183.91.82.216 AS4800 PT Aplikanusa Lintasarta 1.32ms from Jakarta, ID
86.146.65.40 AS2856 British Telecommunications PLC 4.07ms from London, GB
67.249.53.8 AS11351 Charter Communications Inc 16.37ms from New York City, US
118.153.105.136 AS2516 KDDI CORPORATION 8.14ms from Osaka, JP
84.246.224.168 AS34177 CELESTE SAS 6.23ms from Paris, FR
82.55.231.184 AS3269 Telecom Italia S.p.A. 2.60ms from Rome, IT
78.90.251.168 AS20911 Net-Surf.net Ltd. 2.98ms from Sofia, BG
35.165.232.120 AS16509 Amazon.com, Inc. 0.19ms from Boardman, US
34.38.116.104 AS396982 Google LLC 0.15ms from Brussels, BE
95.100.24.248 AS16625 Akamai Technologies, Inc. 1.12ms from Cape Town, ZA
175.153.217.152 AS4837 CHINA UNICOM China169 Backbone 6.26ms from Chengdu, CN
45.144.53.40 AS215730 H2NEXUS LTD 0.26ms from Helsinki, FI
90.39.195.248 AS3215 Orange S.A. 5.26ms from Lyon, FR
46.24.41.216 AS12430 VODAFONE ESPANA S.A.U. 0.84ms from Madrid, ES
89.130.131.72 AS12479 Orange Espagne SA 7.85ms from Madrid, ES
36.34.29.88 AS4837 CHINA UNICOM China169 Backbone 6.71ms from Nanjing, CN
85.29.84.104 AS13170 Kaisanet Oy 0.84ms from Oulu, FI
143.54.135.120 AS19200 Universidade Federal do Rio Grande do Sul 0.75ms from Porto Alegre, BR
126.150.62.24 AS17676 SoftBank Corp. 3.31ms from Tokyo, JP

Traceroute

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

$
traceroute -a -n -q1 -f2 -m6 85.13.126.8
traceroute to 85.13.126.8 (85.13.126.8): 6 hops max, 52 byte packets
2 [AS47447] 212.83.33.9 0.376 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Frankfurt am Main, DE
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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