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 79,228,162,514,264,338,000,000,000,000
ASN type Business
Registry ripe
Allocated 23 years ago on Dec 17, 2002
Updated 9 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 1,957 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 ██████████ 84
82.202.105.206 ██████████ 76
89.203.160.25 ██████████ 59
195.146.100.73 ██████████ 44
212.11.104.13 ██████████ 41
195.146.111.115 ██████████ 40
81.19.42.113 ██████████ 39
89.203.197.145 ██████████ 37
89.203.160.24 ███████ 37
81.19.42.107 ██████████ 36

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Peers

There are 56 peers for this ASN.

Peers Name
AS1239 Cogent Communications, LLC
AS1299 Arelion Sweden AB
AS13335 Cloudflare, Inc.
AS14840 BR.Digital Telecom
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
AS24940 Hetzner Online GmbH
AS29504 Freenet Liberec, z.s.
AS3161 IT PROFI s.r.o.
AS32590 Valve Corporation
AS32787 Akamai Technologies, Inc.
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.
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
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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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.
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
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

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

IP Address ASN Details
85.13.117.100 AS25512 CD-Telematika a.s. 0.30ms from Prague, CZ
89.203.160.23 AS25512 CD-Telematika a.s. 2.93ms from Prague, CZ
212.11.106.206 AS25512 CD-Telematika a.s. 2.01ms from Prague, CZ
212.11.110.1 AS25512 CD-Telematika a.s. 3.04ms from Prague, CZ
89.203.223.21 AS25512 CD-Telematika a.s. 2.04ms from Prague, CZ
85.13.75.33 AS25512 CD-Telematika a.s. 3.68ms from Prague, CZ
82.202.118.242 AS25512 CD-Telematika a.s. 0.89ms from Prague, CZ
212.11.105.246 AS25512 CD-Telematika a.s. 2.27ms from Prague, CZ
82.117.159.134 AS25512 CD-Telematika a.s. 0.35ms from Prague, CZ
213.235.159.14 AS25512 CD-Telematika a.s. 7.04ms from Prague, CZ
89.203.216.1 AS25512 CD-Telematika a.s. 3.20ms from Prague, CZ
82.202.66.166 AS25512 CD-Telematika a.s. 0.47ms from Prague, CZ
82.117.137.17 AS25512 CD-Telematika a.s. 0.32ms from Prague, CZ
82.202.75.225 AS25512 CD-Telematika a.s. 2.99ms from Prague, CZ
82.202.103.1 AS25512 CD-Telematika a.s. 1.35ms from Prague, CZ
85.13.80.31 AS25512 CD-Telematika a.s. 0.31ms from Prague, CZ
85.13.79.81 AS25512 CD-Telematika a.s. 0.46ms from Prague, CZ
81.19.39.9 AS25512 CD-Telematika a.s. 0.30ms from Prague, CZ
81.19.33.209 AS25512 CD-Telematika a.s. 0.24ms from Prague, CZ
85.13.76.145 AS25512 CD-Telematika a.s. 5.23ms from Prague, CZ
213.235.182.1 AS25512 CD-Telematika a.s. 7.15ms from Prague, CZ
82.202.88.209 AS25512 CD-Telematika a.s. 3.00ms from Prague, CZ
212.11.112.241 AS25512 CD-Telematika a.s. 3.00ms from Prague, CZ
2001:1a48:2::2 AS25512 CD-Telematika a.s. 5.95ms from Prague, CZ
85.13.100.3 AS25512 CD-Telematika a.s. 0.60ms 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
45.129.143.40 AS216024 ALEKSEI FEDOROV PR KRUSEVAC 1.09ms from Amsterdam, NL
3.253.90.216 AS16509 Amazon.com, Inc. 0.15ms from Dublin, IE
84.164.161.248 AS3320 Deutsche Telekom AG 4.10ms from Duesseldorf, DE
3.69.124.136 AS16509 Amazon.com, Inc. 0.20ms from Frankfurt am Main, DE
52.57.252.216 AS16509 Amazon.com, Inc. 0.14ms from Frankfurt am Main, DE
3.11.50.168 AS16509 Amazon.com, Inc. 0.22ms from London, GB
140.91.201.40 AS31898 Oracle Corporation 0.46ms from London, GB
175.174.232.56 AS4837 CHINA UNICOM China169 Backbone 7.76ms from Tieling, CN
20.8.66.8 AS8075 Microsoft Corporation 0.23ms from Amsterdam, NL
152.44.58.248 AS12208 TruVista Communications 4.60ms from Atlanta, US
71.233.169.24 AS7922 Comcast Cable Communications, LLC 7.31ms from Boston, US
145.132.72.8 AS8075 Microsoft Corporation 0.83ms from Boydton, US
172.11.130.184 AS7018 AT&T Enterprises, LLC 1.65ms from Dallas, US
213.168.72.24 AS8422 NetCologne Gesellschaft fur Telekommunikation mbH 2.27ms from Duesseldorf, DE
81.110.125.56 AS5089 Virgin Media Limited 10.29ms from London, GB
187.138.125.152 AS8151 UNINET 1.73ms from Monterrey, MX
54.144.151.8 AS14618 Amazon.com, Inc. 0.50ms from Reston, US
3.95.187.72 AS14618 Amazon.com, Inc. 0.41ms from Reston, US
119.203.167.248 AS4766 Korea Telecom 3.11ms from Seoul, KR
149.174.66.168 AS272096 PACKETHUB S.A. 0.32ms from Singapore, SG
129.97.108.8 AS12093 University of Waterloo 2.49ms from Toronto, CA
217.164.202.24 AS5384 Emirates Internet 6.05ms from Al Fujairah City, AE
79.255.170.248 AS3320 Deutsche Telekom AG 4.57ms from Berlin, DE
184.31.180.72 AS16625 Akamai Technologies, Inc. 0.30ms from Bogotá, CO
70.119.123.120 AS11427 Charter Communications Inc 5.29ms from Dallas, US

Traceroute

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

$
traceroute -a -n -q1 -f7 82.117.155.245
traceroute to 82.117.155.245 (82.117.155.245): 64 hops max, 52 byte packets
7 [] 185.1.226.179 35.003 ms
8 *
9 *
10 *
11 *
Measurement taken from IPinfo ProbeNet in Istanbul, TR
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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