81.19.12.0/23

AS34049 · wosa.cz

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Summary

Country	Czechia
Domain	hdata.cz
ASN	AS34049
Parent Range	81.19.0.0/20
Registry	RIPE
ID	H-DATA-NET

WHOIS Details

inetnum:        81.19.12.0 - 81.19.12.255
netname:        H-DATA-NET
descr:          H-DATA, spol. s r.o
country:        CZ
admin-c:        LP2006-RIPE
tech-c:         LP2006-RIPE
status:         ASSIGNED PA
mnt-by:         FASTER-MNT
created:        2004-10-11T12:17:11Z
last-modified:  2004-10-11T12:17:11Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        FA555-RIPE
abuse-org:      ORG-FCss1-RIPE

person:         Ladislav Prokes
address:        H-DATA, spol. s r.o
address:        Vaclavska 4
address:        Brno
address:        625 00
address:        The Czech Republic
phone:          +420 543 244 920
fax-no:         +420 543 330 425
e-mail:         [email protected]
nic-hdl:        LP2006-RIPE
notify:         [email protected]
created:        1970-01-01T00:00:00Z
last-modified:  2020-06-04T07:47:26Z
source:         RIPE
mnt-by:         FASTER-MNT

route:          81.19.12.0/23
descr:          H-data, spol. s .r.o.
origin:         AS34049
mnt-by:         FASTER-MNT
created:        2004-10-11T12:35:56Z
last-modified:  2004-10-11T12:35:56Z
source:         RIPE

Overlapping Ranges

BGP prefixes that contain 81.19.12.0/23

Range	ASN	Company	Num of IPs
81.19.0.0/20	AS24641	FASTER CZ spol. s r.o.	4,096

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
81.19.208.0/20	AS25369	Hydra Communications Ltd	4,096
81.19.112.0/20	AS39242	Seclan Oy	4,096
81.19.144.0/20	AS8560	World4You Internet Services GmbH	4,096
81.19.176.0/20	AS34282	Team Blue Carrier Limited	4,096
81.19.0.0/20	AS24641	FASTER CZ spol. s r.o.	4,096
81.19.96.0/20	AS2914	NTT United Kingdom Ltd	4,096
81.19.16.0/20	AS35283	NETWORTH TELECOM SAS	4,096
81.19.48.0/20	AS29668	vXtream Ltd	4,096
81.19.32.0/20	AS25512	CD-Telematika a.s.	4,096
81.19.48.0/22	AS29668	vXtream Ltd	1,024
81.19.208.0/23	AS25369	Hydra Communications Ltd	512
81.19.156.0/23	AS38955	World4You.com Rootserver BTC	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
81.19.175.0/24	AS24830	CIRCUITOS ALJARAFE, S.L.	256
81.19.150.0/24	AS38955	World4You.com VPS	256
81.19.132.0/24	AS198369	Consumer Internet Cooperative Melenki.Net	256
81.19.216.0/24	AS25369	Hydra Communications Ltd	256
81.19.165.0/24	AS24830	CIRCUITOS ALJARAFE, S.L.	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
81.19.195.0/24	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
81.19.145.0/24	AS38955	World4You.com Internet Services GmbH	256
81.19.146.0/24	AS38955	World4You.com Infrastructure	256
81.19.147.0/24	AS38955	World4You.com SSL Hosts	256
81.19.149.0/24	AS38955	World4You.com Infrastructure	256
81.19.141.0/24	AS215540	GLOBAL CONNECTIVITY SOLUTIONS LLP	256
81.19.195.0/24	AS10515	VeriSign Inc.	256

Hosted domains

There are 10 domain names hosted across 5 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
81.19.12.10	hdata.cz	5
81.19.12.11	kropes.cz	2
81.19.13.154	daniel-franta.cz	1
81.19.12.198	eldac.cz	1
81.19.13.10	ugartova.cz	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

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

IP Address	ASN	Details
81.19.13.1	AS34049 wosa.cz	`0.18ms` from Brno, CZ
81.19.12.53	AS34049 wosa.cz	`0.36ms` from Brno, 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
94.157.98.231	AS50266 Odido Netherlands B.V.	`3.26ms` from Amsterdam, NL
98.216.233.183	AS7922 Comcast Cable Communications, LLC	`11.03ms` from Boston, US
193.245.92.215	AS15953 KBC GLOBAL SERVICES NV	`4.79ms` from Bratislava, SK
104.154.38.39	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
166.78.51.55	AS33070 Rackspace Hosting	`1.02ms` from Dallas, US
150.40.191.39	AS136907 HUAWEI CLOUDS	`1.08ms` from Hong Kong, HK
88.11.104.247	AS3352 TELEFONICA DE ESPANA S.A.U.	`8.63ms` from Madrid, ES
209.122.231.103	AS6079 RCN	`4.21ms` from New York City, US
104.68.101.7	AS16625 Akamai Technologies, Inc.	`0.52ms` from San Jose, US
187.148.250.55	AS8151 UNINET	`8.89ms` from Santiago de Queretaro, MX
187.101.211.231	AS27699 TELEFÔNICA BRASIL S.A	`4.82ms` from São Paulo, BR
1.164.29.231	AS3462 Data Communication Business Group	`1.66ms` from Taipei, TW
81.207.204.103	AS1136 KPN B.V.	`1.38ms` from Amsterdam, NL
88.210.20.87	AS216139 Iron Hosting Centre LTD	`0.72ms` from Amsterdam, NL
171.237.182.215	AS7552 Viettel Group	`3.21ms` from Hanoi, VN
47.242.132.119	AS45102 Alibaba (US) Technology Co., Ltd.	`0.56ms` from Hong Kong, HK
90.200.219.71	AS5607 Sky UK Limited	`10.47ms` from London, GB
112.201.85.87	AS9299 Philippine Long Distance Telephone Company	`4.23ms` from Manila, PH
71.183.184.247	AS701 Verizon Business	`2.45ms` from New York City, US
85.167.136.87	AS2119 Telenor Norge AS	`6.05ms` from Oslo, NO
140.249.54.247	AS58541 Qingdao,266000	`0.98ms` from Qingdao, CN
44.198.231.7	AS14618 Amazon.com, Inc.	`0.16ms` from Reston, US
174.59.236.151	AS7922 Comcast Cable Communications, LLC	`19.82ms` from Reston, US
74.4.182.55	AS14921 CenturyLink Communications, LLC	`11.90ms` from Seattle, US
20.198.165.87	AS8075 Microsoft Corporation	`0.58ms` from Singapore, SG

Traceroute

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

traceroute -a -n -q1 -f4 81.19.13.102

traceroute to 81.19.13.102 (81.19.13.102): 64 hops max, 52 byte packets

4 [] 91.210.16.149 5.389 ms

5 *

6 [AS16019] 62.240.165.150 5.093 ms

7 *

8 *

9 [AS34049] 81.19.13.102 13.482 ms

Measurement taken from

IPinfo ProbeNet in Prague, CZ

On December 14th 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.

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