81.19.32.0/20

AS25512 · CD-Telematika a.s.

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Summary

Country	Czechia
Domain	cdt.cz
ASN	AS25512
Registry	RIPE
ID	CZ-CDT-20021210

WHOIS Details

inetnum:        81.19.32.0 - 81.19.47.255
netname:        CZ-CDT-20021210
country:        CZ
org:            ORG-CTa3-RIPE
admin-c:        CDT-RIPE
tech-c:         CDT-RIPE
status:         ALLOCATED PA
notify:         [email protected]
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         CDT-MNT
created:        2002-12-11T09:51:04Z
last-modified:  2016-07-26T08:44:44Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        CDT-RIPE
abuse-org:      ORG-CTa3-RIPE

organisation:   ORG-CTa3-RIPE
org-name:       CD-Telematika a.s.
country:        CZ
org-type:       LIR
address:        Pernerova 2819/2a
address:        130 00,
address:        Praha 3
address:        CZECH REPUBLIC
phone:          +420210021695
fax-no:         +420210021610
e-mail:         [email protected]
admin-c:        MS58623-RIPE
admin-c:        PL1116-RIPE
abuse-c:        CDT-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        CDT-MNT
notify:         [email protected]
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         CDT-MNT
created:        2004-04-17T11:04:09Z
last-modified:  2025-09-02T12:06:21Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        CDT-RIPE
abuse-org:      undefined

role:           CDT hostmaster
address:        CD-Telematika a.s.
address:        Pod Taborem 6
address:        Praha 9
address:        191 00
address:        The Czech Republic
phone:          +420 210021 685
fax-no:         +420 210021 699
e-mail:         [email protected]
remarks:        --------------------------------------------------
remarks:        abuse and spam reports please mail to [email protected]
remarks:        
remarks:        peering and technical communication
remarks:        mail to ip(at)cdt.cz
remarks:        --------------------------------------------------
admin-c:        PL1116-RIPE
admin-c:        CJ167-RIPE
admin-c:        ZP642-RIPE
admin-c:        MS58623-RIPE
tech-c:         PL1116-RIPE
tech-c:         CJ167-RIPE
tech-c:         ZP642-RIPE
tech-c:         MS58623-RIPE
abuse-mailbox:  [email protected]
nic-hdl:        CDT-RIPE
mnt-by:         CDT-MNT
created:        2004-01-26T14:58:45Z
last-modified:  2025-09-02T12:07:16Z
source:         RIPE

route:          81.19.32.0/20
descr:          CD-Telematika a.s.
descr:          The Czech Republic
origin:         AS25512
mnt-by:         CDT-MNT
created:        2002-12-17T15:07:24Z
last-modified:  2006-07-07T07:59:39Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 81.19.0.0/16

Range	ASN	Company	Num of IPs
81.19.64.0/19	AS24638	Rambler Internet Holding LLC	8,192
81.19.0.0/20	AS24641	FASTER CZ spol. s r.o.	4,096
81.19.16.0/20	AS35283	NETWORTH TELECOM SAS	4,096
81.19.48.0/20	AS29668	vXtream Ltd	4,096
81.19.176.0/20	AS34282	Team Blue Carrier Limited	4,096
81.19.112.0/20	AS39242	Seclan Oy	4,096
81.19.144.0/20	AS8560	World4You Internet Services GmbH	4,096
81.19.208.0/20	AS25369	Hydra Communications Ltd	4,096
81.19.96.0/20	AS2914	NTT United Kingdom Ltd	4,096
81.19.48.0/22	AS29668	vXtream Ltd	1,024
81.19.208.0/23	AS25369	Hydra Communications Ltd	512
81.19.140.0/24	AS215540	GLOBAL CONNECTIVITY SOLUTIONS LLP	256
81.19.139.0/24	AS215540	GLOBAL CONNECTIVITY SOLUTIONS LLP	256
81.19.195.0/24	AS10515	VeriSign Inc.	256
81.19.138.0/24	AS212128	Information & Computing Center, Ltd.	256
81.19.137.0/24	AS210644	Aeza International LTD	256
81.19.195.0/24	AS10515	VeriSign Inc.	256
81.19.195.0/24	AS10515	VeriSign Inc.	256
81.19.167.0/24	AS24830	CIRCUITOS ALJARAFE, S.L.	256
81.19.166.0/24	AS24830	CIRCUITOS ALJARAFE, S.L.	256
81.19.132.0/24	AS198369	Consumer Internet Cooperative Melenki.Net	256
81.19.175.0/24	AS24830	CIRCUITOS ALJARAFE, S.L.	256
81.19.195.0/24	AS396540	VeriSign Inc.	256
81.19.165.0/24	AS24830	CIRCUITOS ALJARAFE, S.L.	256
81.19.216.0/24	AS25369	Hydra Communications Ltd	256
81.19.162.0/24	AS24830	INTEREC	256
81.19.134.0/24	AS142019	ISP IPOCEAN LLC	256
81.19.195.0/24	AS10515	VeriSign Inc.	256
81.19.160.0/24	AS24830	CIRCUITOS ALJARAFE	256
81.19.195.0/24	AS36630	VeriSign Inc.	256
81.19.195.0/24	AS10515	VeriSign Inc.	256
81.19.133.0/24	AS34665	ISP IPOCEAN LLC	256
81.19.14.0/24	AS34049	H-data, spol. s r.o.	256
81.19.54.0/24	AS29668	vXtream Ltd	256
81.19.141.0/24	AS215540	GLOBAL CONNECTIVITY SOLUTIONS LLP	256
81.19.195.0/24	AS36630	VeriSign Inc.	256
81.19.195.0/24	AS36630	VeriSign Inc.	256
81.19.195.0/24	AS36630	VeriSign Inc.	256
81.19.195.0/24	AS36630	VeriSign Inc.	256
81.19.195.0/24	AS36630	VeriSign Inc.	256
81.19.195.0/24	AS36630	VeriSign Inc.	256
81.19.195.0/24	AS36630	VeriSign Inc.	256
81.19.195.0/24	AS36630	VeriSign Inc.	256
81.19.195.0/24	AS10515	VeriSign Inc.	256
81.19.195.0/24	AS396540	VeriSign Inc.	256
81.19.195.0/24	AS396540	VeriSign Inc.	256
81.19.195.0/24	AS396540	VeriSign Inc.	256
81.19.195.0/24	AS10515	VeriSign Inc.	256
81.19.195.0/24	AS10515	VeriSign Inc.	256

Hosted domains

There are 213 domain names hosted across 15 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
81.19.42.5	kocis.cz	96
81.19.42.107	pujcsiautovtabore.cz	42
81.19.42.113	argo-production.cz	40
81.19.42.51	jogatabor.cz	10
81.19.43.3	skinpet.cz	5
81.19.44.100	spedice.cz	4
81.19.43.68	pocitacehorovice.cz	3
81.19.34.226	cdis.cz	3
81.19.46.124	ldsdiag.eu	3
81.19.34.174	vtpm.cz	2
81.19.34.178	basketmagazin.cz	1
81.19.42.3	traktortym.cz	1
81.19.45.38	lestro.cz	1
81.19.43.51	luda.cz	1
81.19.43.19	labvet.shop	1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
81.19.32.146	AS25512 CD-Telematika a.s.	`0.32ms` from Prague, CZ
81.19.35.49	AS25512 CD-Telematika a.s.	`0.29ms` from Prague, CZ
81.19.44.37	AS25512 CD-Telematika a.s.	`0.60ms` from Prague, CZ
81.19.47.241	AS25512 CD-Telematika a.s.	`0.28ms` from Prague, CZ
81.19.33.209	AS25512 CD-Telematika a.s.	`0.25ms` from Prague, CZ
81.19.46.113	AS25512 CD-Telematika a.s.	`0.31ms` from Prague, CZ
81.19.43.1	AS25512 CD-Telematika a.s.	`1.49ms` from Prague, CZ
81.19.38.161	AS25512 CD-Telematika a.s.	`0.29ms` from Prague, CZ
81.19.42.1	AS25512 CD-Telematika a.s.	`4.60ms` from Prague, CZ
81.19.36.1	AS25512 CD-Telematika a.s.	`0.33ms` from Prague, CZ
81.19.34.209	AS25512 CD-Telematika a.s.	`0.30ms` from Prague, CZ
81.19.39.9	AS25512 CD-Telematika a.s.	`0.33ms` 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
34.219.117.212	AS16509 Amazon.com, Inc.	`0.18ms` from Boardman, US
87.65.157.68	AS5432 Proximus NV	`2.43ms` from Brussels, BE
190.30.120.52	AS7303 Telecom Argentina S.A.	`1.61ms` from Buenos Aires, AR
65.182.83.52	AS13693 Vexus Fiber	`3.93ms` from Dallas, US
68.43.113.228	AS7922 Comcast Cable Communications, LLC	`7.74ms` from Flint, US
83.253.149.212	AS1257 Tele2 Sverige AB	`5.29ms` from Goeteborg, SE
86.132.25.164	AS2856 British Telecommunications PLC	`5.88ms` from London, GB
181.140.182.164	AS13489 UNE EPM TELECOMUNICACIONES S.A.	`8.13ms` from Medellin, CO
31.190.243.148	AS1267 WIND TRE S.P.A.	`1.80ms` from Milan, IT
68.132.64.68	AS701 Verizon Business	`2.65ms` from New York City, US
83.197.71.196	AS3215 Orange S.A.	`11.01ms` from Paris, FR
1.211.49.36	AS3786 LG DACOM Corporation	`1.64ms` from Seoul, KR
175.252.117.68	AS4766 Korea Telecom	`1.98ms` from Seoul, KR
121.143.168.100	AS4766 Korea Telecom	`1.41ms` from Seoul, KR
113.25.172.52	AS4134 CHINANET-BACKBONE	`2.77ms` from Taiyuan, CN
79.185.53.100	AS5617 Orange Polska Spolka Akcyjna	`16.82ms` from Warsaw, PL
70.250.151.116	AS7018 AT&T Enterprises, LLC	`7.14ms` from Atlanta, US
216.81.120.100	AS11240 AccessATC	`2.76ms` from Jacksonville, US
97.127.19.4	AS209 CenturyLink Communications, LLC	`2.00ms` from Minneapolis, US
107.161.56.148	AS1403 EBOX	`1.48ms` from Montreal, CA
63.224.129.196	AS209 CenturyLink Communications, LLC	`3.63ms` from Phoenix, US
194.19.50.4	AS2116 GLOBALCONNECT AS	`1.95ms` from Sandefjord, NO
203.173.20.196	AS7545 TPG Telecom Limited	`1.99ms` from Sydney, AU
85.194.158.100	AS25176 AC-Net AB	`8.58ms` from Umea, SE
182.119.178.228	AS4837 CHINA UNICOM China169 Backbone	`1.25ms` from Zhengzhou, CN

Traceroute

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

traceroute -a -n -q1 -f3 -m7 81.19.45.117

traceroute to 81.19.45.117 (81.19.45.117): 7 hops max, 52 byte packets

3 [AS24971] 83.167.254.192 286.901 ms

4 [AS24971] 83.167.254.159 3.243 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Brno, CZ

On December 28th 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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