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:    abuse@faster.cz
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:         komunikace@hdata.cz
nic-hdl:        LP2006-RIPE
notify:         komunikace@hdata.cz
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
81.19.176.0/20	AS34282	Team Blue Carrier Limited	4,096
81.19.112.0/20	AS39242	Seclan Oy	4,096
81.19.96.0/20	AS2914	NTT United Kingdom Ltd	4,096
81.19.48.0/20	AS29668	vXtream Ltd	4,096
81.19.16.0/20	AS35283	NETWORTH TELECOM SAS	4,096
81.19.0.0/20	AS24641	FASTER CZ spol. s r.o.	4,096
81.19.144.0/20	AS8560	World4You Internet Services GmbH	4,096
81.19.32.0/20	AS25512	CD-Telematika a.s.	4,096
81.19.208.0/20	AS25369	Hydra Communications Ltd	4,096
81.19.48.0/22	AS29668	vXtream Ltd	1,024
81.19.208.0/23	AS25369	Hydra Communications Ltd	512
81.19.139.0/24	AS215540	GLOBAL CONNECTIVITY SOLUTIONS LLP	256
81.19.138.0/24	AS212128	Information & Computing Center, Ltd.	256
81.19.195.0/24	AS10515	VeriSign Inc.	256
81.19.137.0/24	AS210644	Aeza International LTD	256
81.19.132.0/24	AS198369	Consumer Internet Cooperative Melenki.Net	256
81.19.195.0/24	AS10515	VeriSign Inc.	256
81.19.195.0/24	AS10515	VeriSign Inc.	256
81.19.166.0/24	AS24830	CIRCUITOS ALJARAFE, S.L.	256
81.19.165.0/24	AS24830	CIRCUITOS ALJARAFE, S.L.	256
81.19.134.0/24	AS142019	ISP IPOCEAN LLC	256
81.19.167.0/24	AS24830	CIRCUITOS ALJARAFE, S.L.	256
81.19.175.0/24	AS24830	CIRCUITOS ALJARAFE, S.L.	256
81.19.162.0/24	AS24830	INTEREC	256
81.19.160.0/24	AS24830	CIRCUITOS ALJARAFE	256
81.19.216.0/24	AS25369	Hydra Communications Ltd	256
81.19.195.0/24	AS10515	VeriSign Inc.	256
81.19.195.0/24	AS10515	VeriSign Inc.	256
81.19.195.0/24	AS36630	VeriSign Inc.	256
81.19.133.0/24	AS34665	ISP IPOCEAN LLC	256
81.19.195.0/24	AS10515	VeriSign Inc.	256
81.19.14.0/24	AS34049	H-data, spol. s r.o.	256
81.19.141.0/24	AS215540	GLOBAL CONNECTIVITY SOLUTIONS LLP	256
81.19.54.0/24	AS29668	vXtream Ltd	256
81.19.140.0/24	AS215540	GLOBAL CONNECTIVITY SOLUTIONS LLP	256
81.19.195.0/24	AS10515	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	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	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	h-data.cz	5
81.19.12.11	vsudedoma.cz	2
81.19.12.198	eldac.cz	1
81.19.13.10	ugartova.cz	1
81.19.13.154	daniel-franta.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

Read more

Pingable IPs

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

IP Address	ASN	Details
81.19.13.139	AS34049 wosa.cz	`0.17ms` from Brno, CZ
81.19.12.9	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.	`3.23ms` from Amsterdam, NL
20.105.184.71	AS8075 Microsoft Corporation	`0.23ms` from Amsterdam, NL
198.164.141.7	AS611 NB-PEI Educational Computer Network	`15.22ms` from Beauharnois, CA
27.6.252.215	AS17488 Hathway IP Over Cable Internet	`1.92ms` from Delhi, IN
93.203.147.247	AS3320 Deutsche Telekom AG	`3.85ms` from Hamburg, DE
162.93.230.55	AS6949 Charles Schwab & Co., Inc.	`9.13ms` from Los Angeles, US
63.202.116.199	AS7018 AT&T Enterprises, LLC	`1.92ms` from Los Angeles, US
118.214.142.231	AS16625 Akamai Technologies, Inc.	`0.23ms` from Mumbai, IN
153.192.22.183	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.53ms` from Osaka, JP
187.181.44.103	AS28573 Claro NXT Telecomunicacoes Ltda	`9.48ms` from Osasco, BR
3.35.28.199	AS16509 Amazon.com, Inc.	`0.15ms` from Seoul, KR
39.96.233.247	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`5.32ms` from Tianjin, CN
54.64.151.151	AS16509 Amazon.com, Inc.	`0.22ms` from Tokyo, JP
62.250.5.103	AS50266 Odido Netherlands B.V.	`4.96ms` from Amsterdam, NL
76.192.122.215	AS7018 AT&T Enterprises, LLC	`13.10ms` from Atlanta, US
118.254.176.87	AS4134 CHINANET-BACKBONE	`5.29ms` from Chenzhou, CN
171.233.113.23	AS7552 Viettel Group	`3.32ms` from Ho Chi Minh City, VN
103.214.136.7	AS45775 WISH NET PRIVATE LIMITED	`1.13ms` from Kolkata, IN
31.217.108.119	AS5391 Hrvatski Telekom d.d.	`16.07ms` from Ljubljana, SI
145.224.64.7	AS14593 Space Exploration Technologies Corporation	`13.94ms` from London, GB
155.198.31.231	AS786 Jisc Services Limited	`1.16ms` from London, GB
86.241.148.135	AS3215 Orange S.A.	`3.55ms` from Marseille, FR
76.233.17.119	AS7018 AT&T Enterprises, LLC	`19.59ms` from San Antonio, US
76.125.48.71	AS7922 Comcast Cable Communications, LLC	`4.54ms` from San Jose, US
119.192.43.151	AS4766 Korea Telecom	`1.68ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -f4 81.19.12.249

traceroute to 81.19.12.249 (81.19.12.249): 64 hops max, 52 byte packets

4 [AS24971] 83.167.254.130 0.248 ms

5 [AS24971] 81.31.40.133 0.186 ms

6 [AS34049] 81.19.12.249 1.061 ms

Measurement taken from

IPinfo ProbeNet in Brno, CZ

On January 9th 2026

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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