Autonomous System details

AS25512

CD-Telematika a.s.  ·  cdt.cz

Czechia

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

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

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.
Get this data and more with IPinfo's powerful IP Ranges API - quickly and easily identify company-owned IP ranges.
IP Ranges API

WHOIS Details

Join for free to view WHOIS details › 

                                                ASHandle:       AS25512
                                                OrgID:          AS25512
                                                ASName:         AS25512
                                                ASNumber:       AS25512
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
Get this data and more with IPinfo's WHOIS product - effortless access to POCs, ORGs, and Networks, for actionable intelligence.
IP WHOIS API & Database

Hosted Domains

There are 1,957 domain names hosted across 544 IP addresses on this ASN.

Join for free to explore hosted domains ›
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

Discover all domains hosted on a single IP address with IPinfo's powerful Hosted Domains (Reverse IP) solution.
Useful for Cybersecurity
Hosted Domains API & Database

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
AS15935 ha-vel internet s.r.o.
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.
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
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

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.
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
89.203.218.1 AS25512 CD-Telematika a.s. 3.17ms from Prague, CZ
89.203.150.13 AS25512 CD-Telematika a.s. 4.51ms from Prague, CZ
89.203.204.2 AS25512 CD-Telematika a.s. 0.36ms from Prague, CZ
2001:1a48:16:323::163 AS25512 CD-Telematika a.s. 0.80ms from Prague, CZ
82.117.155.254 AS25512 CD-Telematika a.s. 3.81ms from Prague, CZ
89.203.185.2 AS25512 CD-Telematika a.s. 5.24ms from Prague, CZ
89.203.145.125 AS25512 CD-Telematika a.s. 6.05ms from Prague, CZ
82.117.146.169 AS25512 CD-Telematika a.s. 5.07ms from Prague, CZ
82.202.115.193 AS25512 CD-Telematika a.s. 2.00ms from Prague, CZ
2001:1a48:2b::1 AS25512 CD-Telematika a.s. 2.53ms from Prague, CZ
212.11.105.246 AS25512 CD-Telematika a.s. 2.26ms from Prague, CZ
2001:1a48:1111:2::3 AS25512 CD-Telematika a.s. 0.36ms from Prague, CZ
89.203.162.12 AS25512 CD-Telematika a.s. 2.93ms from Prague, CZ
85.13.119.243 AS25512 CD-Telematika a.s. 0.32ms from Prague, CZ
81.19.36.129 AS25512 CD-Telematika a.s. 0.37ms from Prague, CZ
89.203.198.109 AS25512 CD-Telematika a.s. 0.46ms from Prague, CZ
82.117.136.129 AS25512 CD-Telematika a.s. 0.35ms from Prague, CZ
82.117.128.138 AS25512 CD-Telematika a.s. 0.80ms from Prague, CZ
213.235.131.1 AS25512 CD-Telematika a.s. 0.41ms from Prague, CZ
89.203.143.113 AS25512 CD-Telematika a.s. 5.85ms from Prague, CZ
2001:1a48:2e:1::15 AS25512 CD-Telematika a.s. 3.72ms from Prague, CZ
82.202.114.65 AS25512 CD-Telematika a.s. 7.11ms from Prague, CZ
2001:1a48:c:ffff::3 AS25512 CD-Telematika a.s. 5.67ms from Prague, CZ
213.235.134.6 AS25512 CD-Telematika a.s. 7.07ms from Prague, CZ
82.117.144.154 AS25512 CD-Telematika a.s. 5.18ms 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
24.145.115.168 AS11776 Breezeline 10.33ms from Ashburn, US
71.120.190.216 AS701 Verizon Business 8.11ms from Ashburn, US
54.68.153.232 AS16509 Amazon.com, Inc. 0.18ms from Boardman, US
172.200.145.40 AS8075 Microsoft Corporation 0.15ms from Boydton, US
162.210.15.120 AS26650 Alpha Technologies Inc 11.90ms from Chicago, US
35.202.57.88 AS396982 Google LLC 0.36ms from Council Bluffs, US
86.170.53.248 AS2856 British Telecommunications PLC 3.92ms from Erith, GB
177.159.109.152 AS18881 TELEFÔNICA BRASIL S.A 0.63ms from Fortaleza, BR
217.80.26.104 AS3320 Deutsche Telekom AG 8.81ms from Frankfurt am Main, DE
77.56.233.216 AS6730 Sunrise GmbH 10.41ms from Geneve, CH
218.55.148.56 AS9318 SK Broadband Co Ltd 2.95ms from Incheon, KR
161.51.200.200 AS201838 Community Fibre Limited 0.74ms from London, GB
87.8.169.168 AS3269 Telecom Italia S.p.A. 3.86ms from Milan, IT
117.81.50.24 AS4134 CHINANET-BACKBONE 4.23ms from Nanjing, CN
129.85.172.56 AS98 The Rockefeller University 0.61ms from New York City, US
101.140.6.120 AS17511 OPTAGE Inc. 3.21ms from Osaka, JP
176.139.101.136 AS5410 Bouygues Telecom SA 8.43ms from Paris, FR
39.65.211.232 AS4837 CHINA UNICOM China169 Backbone 1.48ms from Qingdao, CN
196.74.201.56 AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM 1.90ms from Rabat, MA
42.60.40.40 AS9506 Singtel Fibre Broadband 1.29ms from Singapore, SG
13.53.188.168 AS16509 Amazon.com, Inc. 0.97ms from Stockholm, SE
13.248.151.120 AS16509 Amazon.com, Inc. 0.04ms from Bangkok, TH
120.2.33.72 AS4837 CHINA UNICOM China169 Backbone 10.64ms from Beijing, CN
152.203.136.56 AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC 3.41ms from Bogota, CO
72.163.14.8 AS109 CISCO SYSTEMS, INC. 1.49ms 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 -m5 195.146.118.244
traceroute to 195.146.118.244 (195.146.118.244): 5 hops max, 52 byte packets
3 *
4 *
5 *
Measurement taken from IPinfo ProbeNet in Frankfurt am Main, DE
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.

Data built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs