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 79,228,162,514,264,337,593,543,950,336
ASN type Hosting
Registry ripe
Allocated 23 years ago on Dec 17, 2002
Updated 8 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 ██████████ 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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Hosted Domains API & Database

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
AS21241 Global Payments Europe, s.r.o.
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.
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
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
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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 29 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.
AS21241 Global Payments Europe, s.r.o.
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

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

IP Address ASN Details
89.203.202.2 AS25512 CD-Telematika a.s. 0.37ms from Prague, CZ
89.203.155.2 AS25512 CD-Telematika a.s. 0.81ms from Prague, CZ
89.203.215.1 AS25512 CD-Telematika a.s. 3.20ms from Prague, CZ
85.13.100.2 AS25512 CD-Telematika a.s. 0.61ms from Prague, CZ
212.11.113.185 AS25512 CD-Telematika a.s. 2.44ms from Prague, CZ
212.11.111.17 AS25512 CD-Telematika a.s. 0.28ms from Prague, CZ
82.202.122.193 AS25512 CD-Telematika a.s. 4.20ms from Prague, CZ
81.19.32.146 AS25512 CD-Telematika a.s. 0.31ms from Prague, CZ
212.11.118.135 AS25512 CD-Telematika a.s. 1.83ms from Prague, CZ
195.146.116.225 AS25512 CD-Telematika a.s. 2.43ms from Prague, CZ
89.203.250.12 AS25512 CD-Telematika a.s. 0.44ms from Prague, CZ
82.117.133.17 AS25512 CD-Telematika a.s. 0.30ms from Prague, CZ
2001:1a48:2a:ffff::1 AS25512 CD-Telematika a.s. 1.68ms from Prague, CZ
82.202.65.190 AS25512 CD-Telematika a.s. 0.46ms from Prague, CZ
89.203.247.94 AS25512 CD-Telematika a.s. 5.53ms from Prague, CZ
82.117.151.65 AS25512 CD-Telematika a.s. 0.76ms from Prague, CZ
85.13.111.206 AS25512 CD-Telematika a.s. 4.05ms from Prague, CZ
89.203.190.1 AS25512 CD-Telematika a.s. 3.34ms from Prague, CZ
89.203.230.92 AS25512 CD-Telematika a.s. 0.42ms from Prague, CZ
212.11.115.13 AS25512 CD-Telematika a.s. 2.51ms from Prague, CZ
82.202.116.129 AS25512 CD-Telematika a.s. 1.69ms from Prague, CZ
85.13.97.18 AS25512 CD-Telematika a.s. 0.33ms from Prague, CZ
213.235.176.209 AS25512 CD-Telematika a.s. 0.70ms from Prague, CZ
82.202.120.2 AS25512 CD-Telematika a.s. 0.93ms from Prague, CZ
89.203.192.245 AS25512 CD-Telematika a.s. 0.36ms 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
16.146.46.24 AS16509 Amazon.com, Inc. 0.49ms from Boardman, US
16.28.97.216 AS16509 Amazon.com, Inc. 0.16ms from Cape Town, ZA
184.16.114.8 AS5650 Frontier Communications of America, Inc. 7.49ms from Chicago, US
75.241.117.184 AS6167 Verizon Business 17.93ms from Chicago, US
72.163.14.8 AS109 CISCO SYSTEMS, INC. 1.44ms from Dallas, US
66.25.81.120 AS11427 Charter Communications Inc 9.66ms from Dallas, US
69.151.162.200 AS7018 AT&T Enterprises, LLC 1.22ms from Kansas City, US
175.138.73.56 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 2.45ms from Kuala Lumpur, MY
13.234.102.168 AS16509 Amazon.com, Inc. 0.13ms from Mumbai, IN
97.145.89.56 AS6167 Verizon Business 14.58ms from New York City, US
101.140.6.120 AS17511 OPTAGE Inc. 3.11ms from Osaka, JP
5.28.173.136 AS12849 Hot-Net internet services Ltd. 0.30ms from Petaẖ Tiqva, IL
3.213.18.88 AS14618 Amazon.com, Inc. 0.21ms from Reston, US
58.123.23.168 AS9318 SK Broadband Co Ltd 0.82ms from Seoul, KR
35.155.97.40 AS16509 Amazon.com, Inc. 0.17ms from Boardman, US
71.65.130.56 AS11426 Charter Communications Inc 7.16ms from Charlotte, US
136.50.223.248 AS16591 Google Fiber Inc. 7.12ms from Dallas, US
75.141.131.200 AS20115 Charter Communications LLC 4.08ms from Dallas, US
223.7.224.248 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 4.42ms from Hangzhou, CN
113.175.83.56 AS45899 VNPT Corp 2.80ms from Hanoi, VN
60.48.182.232 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 2.30ms from Kuala Lumpur, MY
73.37.249.168 AS7922 Comcast Cable Communications, LLC 5.44ms from Minneapolis, US
109.168.191.24 AS12389 PJSC Rostelecom 17.61ms from Moscow, RU
223.65.64.120 AS56046 China Mobile communications corporation 1.76ms from Nanjing, CN
130.25.35.72 AS30722 Fastweb SpA 8.06ms from Rome, IT

Traceroute

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

$
traceroute -a -n -q1 -f3 -m7 89.203.135.57
traceroute to 89.203.135.57 (89.203.135.57): 7 hops max, 52 byte packets
3 [AS201011] 81.95.9.44 0.362 ms
4 [AS201011] 81.95.15.118 11.847 ms
5 *
6 *
7 *
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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