89.239.24.0/21

AS56821 · KnVnet services s.r.o.

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Summary

Country	Czechia
Domain	grepa.cz
ASN	AS56821
Parent Range	89.239.0.0/19
Registry	RIPE
ID	KNVN-NETRANGE

WHOIS Details

inetnum:        89.239.24.0 - 89.239.31.255
netname:        knvn-netrange
country:        CZ
admin-c:        TH6952-RIPE
tech-c:         TH6952-RIPE
status:         ASSIGNED PA
mnt-by:         MNT-GREPA
created:        2018-09-18T08:42:07Z
last-modified:  2018-09-18T08:42:07Z
source:         RIPE
abuse-email:    milan.kroupa@grepa.cz
abuse-c:        AR14419-RIPE
abuse-org:      ORG-GNS3-RIPE

person:         Tomas Havel
address:        Sidliste Hurka 1060 278 01, Kralupy nad Vltavou, CZ
phone:          +420-774-880884
nic-hdl:        TH6952-RIPE
e-mail:         tomas.havel@knvnet.cz
mnt-by:         MNT-GREPA
created:        2018-09-14T08:37:44Z
last-modified:  2018-09-14T08:37:44Z
source:         RIPE

route:          89.239.24.0/21
origin:         AS56821
mnt-by:         MNT-GREPA
created:        2018-09-18T10:31:02Z
last-modified:  2018-09-18T10:31:02Z
source:         RIPE

Overlapping Ranges

BGP prefixes that contain 89.239.24.0/21

Range	ASN	Company	Num of IPs
89.239.0.0/19	AS44489	GREPA Networks s.r.o.	8,192

Nearby Ranges

BGP prefixes that overlap with 89.239.0.0/16

Range	ASN	Company	Num of IPs
89.239.128.0/18	AS12389	PJSC Rostelecom	16,384
89.239.192.0/18	AS44869	FIBIA P/S	16,384
89.239.0.0/19	AS44489	GREPA Networks s.r.o.	8,192
89.239.32.0/20	AS12975	Hadara Technologies Private Shareholding Company	4,096
89.239.48.0/20	AS25853	Ellijay Telephone Company	4,096

Hosted domains

There are 10 domain names hosted across 9 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
89.239.31.24	arealzakolany.cz	2
89.239.30.49	frymburk24.cz	1
89.239.25.39	realitymapper.cz	1
89.239.30.3	kompaktus.com	1
89.239.31.10	patos.cz	1
89.239.24.16	tomhavel.com	1
89.239.31.40	als-euro.info	1
89.239.31.199	monotea.cz	1
89.239.25.15	tomsik.net	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

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

IP Address	ASN	Details
89.239.30.33	AS56821 KnVnet services s.r.o.	`1.64ms` from Prague, CZ
89.239.24.34	AS56821 KnVnet services s.r.o.	`1.41ms` from Prague, CZ
89.239.25.218	AS56821 KnVnet services s.r.o.	`2.06ms` from Prague, CZ
89.239.31.249	AS56821 KnVnet services s.r.o.	`1.61ms` 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
31.21.201.85	AS50266 Odido Netherlands B.V.	`2.39ms` from Amsterdam, NL
20.71.94.53	AS8075 Microsoft Corporation	`0.24ms` from Amsterdam, NL
174.51.131.37	AS7922 Comcast Cable Communications, LLC	`4.39ms` from Denver, US
104.80.31.213	AS16625 Akamai Technologies, Inc.	`0.28ms` from Frankfurt am Main, DE
91.19.37.181	AS3320 Deutsche Telekom AG	`6.68ms` from Frankfurt am Main, DE
157.18.152.21	AS17816 China Unicom IP network China169 Guangdong province	`4.99ms` from Guangzhou, CN
36.26.30.101	AS4134 CHINANET-BACKBONE	`5.74ms` from Hangzhou, CN
197.64.178.69	AS16637 MTN SA	`13.66ms` from Johannesburg, ZA
88.14.113.53	AS3352 TELEFONICA DE ESPANA S.A.U.	`6.68ms` from Madrid, ES
103.13.63.149	AS10011 advanscope inc.	`2.33ms` from Osaka, JP
180.144.177.117	AS17511 OPTAGE Inc.	`1.44ms` from Osaka, JP
184.72.137.85	AS14618 Amazon.com, Inc.	`0.24ms` from Reston, US
52.126.190.85	AS8070 Microsoft Corporation	`1.21ms` from San Antonio, US
125.249.43.21	AS17858 LG POWERCOMM	`1.99ms` from Seoul, KR
103.22.220.133	AS9270 National Infomation Society Agency	`3.55ms` from Seoul, KR
219.74.162.53	AS9506 Singtel Fibre Broadband	`1.63ms` from Singapore, SG
142.113.122.21	AS577 Bell Canada	`3.27ms` from Toronto, CA
188.17.159.69	AS12389 PJSC Rostelecom	`7.52ms` from Yekaterinburg, RU
115.57.180.21	AS4837 CHINA UNICOM China169 Backbone	`1.35ms` from Zhengzhou, CN
115.56.240.197	AS4837 CHINA UNICOM China169 Backbone	`3.91ms` from Zhengzhou, CN
4.37.225.197	AS3356 Level 3 Parent, LLC	`0.53ms` from Ashburn, US
216.82.230.5	AS12130 Bandwidth Inc.	`9.54ms` from Atlanta, US
71.90.237.245	AS20115 Charter Communications LLC	`11.55ms` from Atlanta, US
73.119.23.53	AS7922 Comcast Cable Communications, LLC	`7.33ms` from Boston, US
190.15.185.53	AS52281 PATRIACELL, C.A.	`0.92ms` from Caracas, VE

Traceroute

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

traceroute -a -n -q1 -f4 -m12 89.239.27.40

traceroute to 89.239.27.40 (89.239.27.40): 12 hops max, 52 byte packets

4 [AS9002] 87.245.236.159 26.406 ms

5 [AS1273] 195.2.20.93 32.604 ms

6 *

7 [AS16019] 213.192.8.129 34.701 ms

8 *

9 [AS56821] 89.239.24.77 41.36 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Riga, LV

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.

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