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
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
2001:1a48:2a:ffff::1 AS25512 CD-Telematika a.s. 1.70ms from Prague, CZ
89.203.130.6 AS25512 CD-Telematika a.s. 3.91ms from Prague, CZ
89.203.215.1 AS25512 CD-Telematika a.s. 3.20ms from Prague, CZ
213.235.188.1 AS25512 CD-Telematika a.s. 3.19ms from Prague, CZ
213.235.133.76 AS25512 CD-Telematika a.s. 0.31ms from Prague, CZ
85.13.71.1 AS25512 CD-Telematika a.s. 2.18ms from Prague, CZ
85.13.127.129 AS25512 CD-Telematika a.s. 0.26ms from Prague, CZ
82.202.116.129 AS25512 CD-Telematika a.s. 1.64ms from Prague, CZ
82.202.114.65 AS25512 CD-Telematika a.s. 7.09ms from Prague, CZ
212.11.108.33 AS25512 CD-Telematika a.s. 2.46ms from Prague, CZ
195.146.106.1 AS25512 CD-Telematika a.s. 0.36ms from Prague, CZ
89.203.217.45 AS25512 CD-Telematika a.s. 3.52ms from Prague, CZ
82.117.130.241 AS25512 CD-Telematika a.s. 0.31ms from Prague, CZ
82.202.66.166 AS25512 CD-Telematika a.s. 0.51ms from Prague, CZ
2001:1a48:1112:9::2 AS25512 CD-Telematika a.s. 0.37ms from Prague, CZ
213.235.134.6 AS25512 CD-Telematika a.s. 7.09ms from Prague, CZ
82.117.151.97 AS25512 CD-Telematika a.s. 0.76ms from Prague, CZ
89.203.190.1 AS25512 CD-Telematika a.s. 3.37ms from Prague, CZ
213.235.132.5 AS25512 CD-Telematika a.s. 6.60ms from Prague, CZ
82.202.71.39 AS25512 CD-Telematika a.s. 0.74ms from Prague, CZ
2001:1a48:d:1:e68d:8cff:fe02:fa8 AS25512 CD-Telematika a.s. 3.97ms from Prague, CZ
82.117.131.205 AS25512 CD-Telematika a.s. 0.33ms from Prague, CZ
212.11.112.241 AS25512 CD-Telematika a.s. 2.49ms from Prague, CZ
82.202.74.101 AS25512 CD-Telematika a.s. 2.35ms from Prague, CZ
2001:1a48:0:3::d2 AS25512 CD-Telematika a.s. 0.29ms 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
117.242.201.72 AS9829 National Internet Backbone 14.02ms from Bengaluru, IN
86.170.132.24 AS2856 British Telecommunications PLC 2.14ms from London, GB
185.145.69.168 AS29119 AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONAL 9.07ms from Madrid, ES
5.48.209.200 AS5410 Bouygues Telecom SA 7.68ms from Marseille, FR
216.27.224.40 AS22343 Vonage Business Inc. 0.90ms from Phoenix, US
37.105.28.72 AS25019 Saudi Telecom Company JSC 1.66ms from Riyadh, SA
222.97.181.232 AS4766 Korea Telecom 6.58ms from Seoul, KR
4.172.251.200 AS8075 Microsoft Corporation 0.38ms from Toronto, CA
68.100.161.8 AS22773 Cox Communications Inc. 5.17ms from Ashburn, US
164.191.252.200 AS668 United States Department of Defense (DoD) 0.52ms from Atlanta, US
42.159.8.168 AS58593 Shanghai Blue Cloud Technology Co.,Ltd 4.67ms from Beijing, CN
79.118.242.248 AS8708 DIGI ROMANIA S.A. 2.86ms from Bucharest, RO
78.180.180.104 AS9121 Turk Telekomunikasyon Anonim Sirketi 10.33ms from Bursa, TR
192.150.115.200 AS600 OARnet 7.51ms from Columbus, US
91.245.244.72 AS201000 Js Whizzy Internet Limited 4.31ms from Dublin, IE
77.7.121.152 AS6805 Telefonica Germany GmbH & Co.OHG 9.24ms from Frankfurt am Main, DE
15.160.84.8 AS16509 Amazon.com, Inc. 0.13ms from Milan, IT
82.185.193.232 AS3269 Telecom Italia S.p.A. 4.95ms from Milan, IT
74.78.233.72 AS11351 Charter Communications Inc 17.86ms from New York City, US
71.183.0.88 AS701 Verizon Business 10.59ms from New York City, US
177.97.122.56 AS18881 TELEFÔNICA BRASIL S.A 15.97ms from Osasco, BR
173.33.251.200 AS812 Rogers Communications Canada Inc. 1.49ms from Ottawa, CA
163.114.32.8 AS3215 Orange S.A. 1.86ms from Paris, FR
79.36.141.56 AS3269 Telecom Italia S.p.A. 16.56ms from Rome, IT
220.126.236.40 AS4766 Korea Telecom 1.70ms from Seoul, KR

Traceroute

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

$
traceroute -a -n -q1 -m5 213.235.136.148
traceroute to 213.235.136.148 (213.235.136.148): 5 hops max, 52 byte packets
1 [AS43289] 45.153.124.1 5.397 ms
3 *
4 *
5 *
Measurement taken from IPinfo ProbeNet in Chisinau, MD
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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