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 1,934
IPv4 addresses 117,760
IPv6 addresses 79,228,162,514,264,337,593,543,950,336
ASN type ISP
Registry ripe
Allocated 23 years ago on Dec 17, 2002
Updated 4 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 1,934 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
85.13.80.72 ██████████ 44
195.146.100.73 ██████████ 43
81.19.42.107 ██████████ 42
195.146.111.115 ██████████ 41
81.19.42.113 ██████████ 40
89.203.160.25 ██████████ 39
212.11.104.13 ██████████ 36

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Peers

There are 53 peers for this ASN.

Peers Name
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.
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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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
82.117.157.254 AS25512 CD-Telematika a.s. 4.62ms from Prague, CZ
2001:1a48:1f::1 AS25512 CD-Telematika a.s. 2.28ms from Prague, CZ
82.202.100.1 AS25512 CD-Telematika a.s. 0.45ms from Prague, CZ
82.202.105.117 AS25512 CD-Telematika a.s. 0.27ms from Prague, CZ
2001:1a48:0:3::60 AS25512 CD-Telematika a.s. 0.29ms from Prague, CZ
195.146.117.55 AS25512 CD-Telematika a.s. 2.73ms from Prague, CZ
89.203.165.81 AS25512 CD-Telematika a.s. 3.87ms from Prague, CZ
89.203.172.1 AS25512 CD-Telematika a.s. 3.31ms from Prague, CZ
89.203.247.119 AS25512 CD-Telematika a.s. 5.54ms from Prague, CZ
85.13.71.1 AS25512 CD-Telematika a.s. 2.18ms from Prague, CZ
195.146.103.1 AS25512 CD-Telematika a.s. 0.34ms from Prague, CZ
212.11.115.13 AS25512 CD-Telematika a.s. 2.49ms from Prague, CZ
213.235.191.1 AS25512 CD-Telematika a.s. 3.31ms from Prague, CZ
82.202.88.161 AS25512 CD-Telematika a.s. 2.43ms from Prague, CZ
213.235.158.22 AS25512 CD-Telematika a.s. 6.86ms from Prague, CZ
195.146.101.239 AS25512 CD-Telematika a.s. 0.34ms from Prague, CZ
89.203.140.1 AS25512 CD-Telematika a.s. 3.30ms from Prague, CZ
2001:1a48:2b::d42f:177a AS25512 CD-Telematika a.s. 2.39ms from Prague, CZ
82.202.113.1 AS25512 CD-Telematika a.s. 4.39ms from Prague, CZ
82.202.71.39 AS25512 CD-Telematika a.s. 0.73ms from Prague, CZ
89.203.168.97 AS25512 CD-Telematika a.s. 4.27ms from Prague, CZ
212.11.110.1 AS25512 CD-Telematika a.s. 2.51ms from Prague, CZ
89.203.238.66 AS25512 CD-Telematika a.s. 0.25ms from Prague, CZ
89.203.250.65 AS25512 CD-Telematika a.s. 0.44ms from Prague, CZ
82.117.156.254 AS25512 CD-Telematika a.s. 3.67ms 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
72.196.159.200 AS22773 Cox Communications Inc. 19.78ms from Ashburn, US
3.31.125.248 AS8987 Amazon Data Services Ireland Ltd 0.36ms from Boardman, US
41.40.110.56 AS8452 TE-AS 6.87ms from Cairo, EG
187.147.165.88 AS8151 UNINET 12.30ms from Cancún, MX
174.99.7.72 AS11426 Charter Communications Inc 9.77ms from Charlotte, US
76.25.73.8 AS7922 Comcast Cable Communications, LLC 5.35ms from Denver, US
84.164.161.248 AS3320 Deutsche Telekom AG 4.68ms from Duesseldorf, DE
47.110.67.248 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 2.11ms from Hangzhou, CN
180.253.218.216 AS7713 PT Telekomunikasi Indonesia 1.80ms from Jakarta, ID
116.55.249.232 AS134765 CHINANET Yunnan province IDC1 network 0.62ms from Kunming, CN
80.22.142.88 AS3269 Telecom Italia S.p.A. 4.57ms from Milan, IT
179.251.173.24 AS26615 TIM S/A 19.29ms from Sao Paulo, BR
175.99.18.40 AS131628 Tai-Fu Cloud Co., Ltd. 0.86ms from Taipei, TW
52.188.115.72 AS8075 Microsoft Corporation 0.43ms from Ashburn, US
181.26.177.168 AS22927 Telefonica de Argentina 2.29ms from Buenos Aires, AR
181.22.146.248 AS22927 Telefonica de Argentina 4.33ms from Buenos Aires, AR
121.74.244.248 AS9500 One New Zealand Group Limited 1.61ms from Christchurch, NZ
221.126.168.232 AS9304 HGC Global Communications Limited 1.67ms from Hong Kong, HK
82.16.254.200 AS5089 Virgin Media Limited 9.09ms from London, GB
82.185.193.232 AS3269 Telecom Italia S.p.A. 4.91ms from Milan, IT
69.157.150.56 AS577 Bell Canada 2.11ms from Montreal, CA
130.41.1.200 AS394089 Google LLC 0.10ms from Mumbai, IN
200.132.6.24 AS2716 Universidade Federal do Rio Grande do Sul 12.48ms from Novo Hamburgo, BR
125.136.41.120 AS4766 Korea Telecom 5.81ms from Seoul, KR
179.82.38.168 AS26599 TELEFÔNICA BRASIL S.A 7.57ms from São Paulo, BR

Traceroute

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

$
traceroute -a -n -q1 -f3 -m10 212.11.120.212
traceroute to 212.11.120.212 (212.11.120.212): 10 hops max, 52 byte packets
3 [AS3257] 213.39.2.85 0.232 ms
4 *
5 [AS174] 154.54.38.210 11.939 ms
6 [AS174] 154.54.77.134 15.931 ms
7 [AS174] 154.54.77.102 15.324 ms
8 *
9 *
10 *
Measurement taken from IPinfo ProbeNet in Amsterdam, NL
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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