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 79,228,162,514,264,338,000,000,000,000
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.
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 ██████████ 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

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.
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
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
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 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
82.202.118.182 AS25512 CD-Telematika a.s. 0.92ms from Prague, CZ
89.203.142.204 AS25512 CD-Telematika a.s. 0.63ms from Prague, CZ
89.203.247.11 AS25512 CD-Telematika a.s. 5.84ms from Prague, CZ
85.13.100.3 AS25512 CD-Telematika a.s. 0.59ms from Prague, CZ
195.146.101.239 AS25512 CD-Telematika a.s. 0.31ms from Prague, CZ
212.11.105.246 AS25512 CD-Telematika a.s. 2.34ms from Prague, CZ
213.235.186.1 AS25512 CD-Telematika a.s. 3.21ms from Prague, CZ
212.11.109.1 AS25512 CD-Telematika a.s. 3.52ms from Prague, CZ
89.203.144.113 AS25512 CD-Telematika a.s. 6.09ms from Prague, CZ
81.19.38.161 AS25512 CD-Telematika a.s. 0.28ms from Prague, CZ
2001:1a48:2e:1::254 AS25512 CD-Telematika a.s. 3.77ms from Prague, CZ
2001:1a48:2a:ffff::1 AS25512 CD-Telematika a.s. 1.67ms from Prague, CZ
89.203.222.49 AS25512 CD-Telematika a.s. 0.25ms from Prague, CZ
82.202.70.81 AS25512 CD-Telematika a.s. 0.68ms from Prague, CZ
85.13.88.25 AS25512 CD-Telematika a.s. 5.86ms from Prague, CZ
2001:1a48:8:f000::11 AS25512 CD-Telematika a.s. 2.21ms from Prague, CZ
89.203.215.157 AS25512 CD-Telematika a.s. 3.85ms from Prague, CZ
89.203.149.28 AS25512 CD-Telematika a.s. 4.43ms from Prague, CZ
213.235.129.2 AS25512 CD-Telematika a.s. 0.88ms from Prague, CZ
2001:1a48:20::1 AS25512 CD-Telematika a.s. 4.20ms from Prague, CZ
82.117.140.3 AS25512 CD-Telematika a.s. 0.59ms from Prague, CZ
82.117.148.6 AS25512 CD-Telematika a.s. 0.60ms from Prague, CZ
2001:1a48:18::2 AS25512 CD-Telematika a.s. 4.25ms from Prague, CZ
2001:1a48:b:1::1 AS25512 CD-Telematika a.s. 3.71ms from Prague, CZ
82.202.123.5 AS25512 CD-Telematika a.s. 4.32ms 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
174.54.238.56 AS7922 Comcast Cable Communications, LLC 17.39ms from Ashburn, US
73.128.0.136 AS7922 Comcast Cable Communications, LLC 4.28ms from Ashburn, US
23.41.244.104 AS20940 Akamai International B.V. 0.50ms from Denver, US
54.171.35.232 AS16509 Amazon.com, Inc. 0.30ms from Dublin, IE
155.4.175.88 AS8473 Bahnhof AB 4.69ms from Falkenberg, SE
123.16.36.152 AS45899 VNPT Corp 1.39ms from Hanoi, VN
121.191.19.136 AS4766 Korea Telecom 2.76ms from Incheon, KR
140.211.67.24 AS3701 University of Oregon 6.16ms from Portland, US
73.11.30.168 AS7922 Comcast Cable Communications, LLC 1.80ms from Portland, US
149.61.49.88 AS23171 Manhattan University 1.37ms from Secaucus, US
68.100.161.8 AS22773 Cox Communications Inc. 4.57ms from Ashburn, US
177.65.111.24 AS28573 Claro NXT Telecomunicacoes Ltda 0.38ms from Fortaleza, BR
223.7.224.248 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 4.65ms from Hangzhou, CN
34.101.4.8 AS139190 Google Asia Pacific Pte. Ltd. 0.49ms from Jakarta, ID
47.180.116.184 AS5650 Frontier Communications of America, Inc. 1.77ms from Los Angeles, US
88.1.253.200 AS3352 TELEFONICA DE ESPANA S.A.U. 5.29ms from Madrid, ES
180.106.38.88 AS140292 CHINATELECOM Jiangsu province Suzhou 5G network 6.60ms from Nanjing, CN
90.21.116.120 AS3215 Orange S.A. 6.79ms from Paris, FR
187.67.215.168 AS28573 Claro NXT Telecomunicacoes Ltda 7.46ms from Rio de Janeiro, BR
104.215.96.232 AS8075 Microsoft Corporation 0.15ms from San Antonio, US
118.84.113.72 AS4134 CHINANET BACKBONE 3.42ms from Shanghai, CN
8.129.14.56 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 1.63ms from Shenzhen, CN
181.199.225.152 AS19863 Guyana Telephone & Telegraph Co. 19.84ms from Willemstad, CW
123.5.1.8 AS4837 CHINA UNICOM China169 Backbone 3.20ms from Zhengzhou, CN
98.30.8.216 AS10796 Charter Communications Inc 13.46ms from Columbus, US

Traceroute

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

$
traceroute -a -n -q1 -f2 82.117.141.29
traceroute to 82.117.141.29 (82.117.141.29): 64 hops max, 52 byte packets
2 [] 91.210.16.101 0.372 ms
3 [AS25512] 81.19.33.25 0.388 ms
4 [AS25512] 81.19.33.198 3.967 ms
Measurement taken from IPinfo ProbeNet in Prague, CZ
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