Autonomous System details

AS25512

CD-Telematika a.s.  ·  cdt.cz

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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 7 months ago on Jul 29, 2025
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


                                                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.

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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Useful for Cybersecurity

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.
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
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
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.

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
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.

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.

Pingable IPs

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

IP Address ASN Details
195.146.101.239 AS25512 CD-Telematika a.s. 0.35ms from Prague, CZ
212.11.106.206 AS25512 CD-Telematika a.s. 1.99ms from Prague, CZ
82.202.69.1 AS25512 CD-Telematika a.s. 0.66ms from Prague, CZ
85.13.77.1 AS25512 CD-Telematika a.s. 0.46ms from Prague, CZ
212.11.104.129 AS25512 CD-Telematika a.s. 3.29ms from Prague, CZ
89.203.237.66 AS25512 CD-Telematika a.s. 0.29ms from Prague, CZ
82.202.87.89 AS25512 CD-Telematika a.s. 2.46ms from Prague, CZ
81.19.39.9 AS25512 CD-Telematika a.s. 0.32ms from Prague, CZ
89.203.130.6 AS25512 CD-Telematika a.s. 3.91ms from Prague, CZ
82.202.72.1 AS25512 CD-Telematika a.s. 0.32ms from Prague, CZ
82.117.137.17 AS25512 CD-Telematika a.s. 0.33ms from Prague, CZ
89.203.227.1 AS25512 CD-Telematika a.s. 4.65ms from Prague, CZ
89.203.173.1 AS25512 CD-Telematika a.s. 3.23ms from Prague, CZ
213.235.182.1 AS25512 CD-Telematika a.s. 7.15ms from Prague, CZ
89.203.165.129 AS25512 CD-Telematika a.s. 4.04ms from Prague, CZ
82.202.70.81 AS25512 CD-Telematika a.s. 0.65ms from Prague, CZ
82.117.151.97 AS25512 CD-Telematika a.s. 0.79ms from Prague, CZ
82.202.116.129 AS25512 CD-Telematika a.s. 1.69ms from Prague, CZ
81.19.35.49 AS25512 CD-Telematika a.s. 0.28ms from Prague, CZ
89.203.187.1 AS25512 CD-Telematika a.s. 3.13ms from Prague, CZ
89.203.216.1 AS25512 CD-Telematika a.s. 3.17ms from Prague, CZ
82.202.79.225 AS25512 CD-Telematika a.s. 2.45ms from Prague, CZ
2001:1a48:a100::1 AS25512 CD-Telematika a.s. 0.95ms from Prague, CZ
213.235.157.8 AS25512 CD-Telematika a.s. 2.10ms from Prague, CZ
82.117.130.249 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
71.232.190.184 AS7922 Comcast Cable Communications, LLC 7.59ms from Boston, US
145.132.72.8 AS8075 Microsoft Corporation 0.82ms from Boydton, US
152.66.247.72 AS2547 Budapest University of Technology and Economics 1.02ms from Budapest, HU
91.134.183.184 AS16276 OVH SAS 0.08ms from Gravelines, FR
40.27.28.232 AS2856 British Telecommunications PLC 7.58ms from London, GB
15.160.84.8 AS16509 Amazon.com, Inc. 0.12ms from Milan, IT
149.61.49.88 AS23171 Manhattan College 0.78ms from New York City, US
40.183.171.8 AS9009 M247 Europe SRL 0.24ms from New York City, US
212.68.153.104 AS12400 Partner Communications Ltd. 6.89ms from Rosh Ha‘Ayin, IL
153.206.238.120 AS4713 NTT DOCOMO BUSINESS,Inc. 3.69ms from Tokyo, JP
129.97.108.8 AS12093 University of Waterloo 2.23ms from Toronto, CA
173.230.132.72 AS63949 Akamai Connected Cloud 0.36ms from Atlanta, US
109.131.53.184 AS5432 Proximus NV 1.96ms from Brussels, BE
91.40.185.56 AS3320 Deutsche Telekom AG 3.52ms from Frankfurt am Main, DE
129.204.20.184 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.94ms from Guangzhou, CN
73.77.48.184 AS7922 Comcast Cable Communications, LLC 5.92ms from Houston, US
67.4.233.248 AS209 CenturyLink Communications, LLC 1.07ms from Minneapolis, US
223.65.64.120 AS56046 China Mobile communications corporation 1.75ms from Nanjing, CN
201.71.86.24 AS27652 Claro S/A 1.67ms from Rio de Janeiro, BR
59.23.87.168 AS4766 Korea Telecom 6.74ms from Seoul, KR
118.84.113.72 AS4134 CHINANET-BACKBONE 3.24ms from Shanghai, CN
126.127.246.248 AS17676 SoftBank Corp. 6.19ms from Tokyo, JP
49.224.163.136 AS9500 One New Zealand Group Limited 17.90ms from Auckland, NZ
78.54.131.184 AS6805 Telefonica Germany GmbH & Co.OHG 4.08ms from Berlin, DE
23.41.244.104 AS20940 Akamai International B.V. 0.50ms from Denver, US

Traceroute

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

$
traceroute -a -n -q1 -f3 -m18 89.203.232.141
traceroute to 89.203.232.141 (89.203.232.141): 18 hops max, 52 byte packets
3 [AS749] 11.202.17.1 1.853 ms
4 *
5 [AS4788] 1.9.253.57 1.871 ms
6 *
7 *
8 *
9 [AS6939] 184.104.195.190 163.603 ms
10 [AS6939] 72.52.92.206 163.73 ms
11 *
12 [AS25512] 81.19.33.113 169.824 ms
13 [AS25512] 89.203.221.2 171.426 ms
14 [AS25512] 89.203.221.1 179.078 ms
15 [AS25512] 89.203.221.2 173.235 ms
16 *
17 *
18 *
Measurement taken from IPinfo ProbeNet in Kuala Lumpur, MY
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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