80.243.236.0/22

AS42908 · ORIGINAL AS CZ-NORDICTELECOMREGIONAL

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Summary

Country	Czechia
Domain	o2.cz
ASN	AS42908
Registry	RIPE
ID	CZ-CZNET-20180814

WHOIS Details

inetnum:        80.243.236.0 - 80.243.239.255
netname:        CZ-CZNET-20180814
country:        CZ
org:            ORG-STaN1-RIPE
admin-c:        VAKO1-RIPE
tech-c:         CZO2-RIPE
status:         ALLOCATED PA
mnt-by:         AS5610-MTN
mnt-by:         RIPE-NCC-HM-MNT
created:        2025-04-01T07:33:38Z
last-modified:  2025-04-01T07:33:38Z
source:         RIPE
abuse-email:    abuse@o2.cz
abuse-c:        AR14410-RIPE
abuse-org:      ORG-STaN1-RIPE

organisation:   ORG-STaN1-RIPE
org-name:       O2 Czech Republic, a.s.
country:        CZ
org-type:       LIR
address:        Za Brumlovkou 266/2
address:        140 22
address:        Praha 4 - Michle
address:        CZECH REPUBLIC
phone:          +420 2 71466184
fax-no:         +420 2 71464414
e-mail:         marek.vogel@o2.cz
admin-c:        VAKO1-RIPE
admin-c:        MV96-RIPE
admin-c:        HVJI1-RIPE
tech-c:         CZO2-RIPE
abuse-c:        AR14410-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        AS5610-MTN
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         AS5610-MTN
created:        2004-04-17T11:04:17Z
last-modified:  2020-12-16T12:31:56Z
source:         RIPE
abuse-email:    abuse@o2.cz
abuse-c:        AR14410-RIPE
abuse-org:      undefined

role:           5610-Tech-and-Admin
address:        Za Brumlovkou 266/2
address:        Praha 4 - Michle, PSC 140 22
e-mail:         router@o2.cz
nic-hdl:        CZO2-RIPE
admin-c:        VAKO1-RIPE
admin-c:        MV96-RIPE
admin-c:        HVJI1-RIPE
tech-c:         VAKO1-RIPE
tech-c:         HVJI1-RIPE
abuse-mailbox:  abuse@o2.cz
org:            ORG-STaN1-RIPE
mnt-by:         AS5610-MTN
created:        2016-02-18T09:58:30Z
last-modified:  2018-04-20T10:44:21Z
source:         RIPE

person:         Vaclav Kordula
address:        O2 Czech Republic, a.s.
address:        Za Brumlovkou 266/2
address:        Praha 4 - Michle, PS? 140 22
address:        Czech Republic
phone:          +420 2 714668845
e-mail:         vaclav.kordula@o2.cz
nic-hdl:        VAKO1-RIPE
notify:         vaclav.kordula@o2.cz
mnt-by:         AS5610-MTN
created:        1970-01-01T00:00:00Z
last-modified:  2016-02-12T13:32:30Z
source:         RIPE

route:          80.243.236.0/22
origin:         AS42908
mnt-by:         mnt-nordictelecom
mnt-by:         AS5610-MTN
created:        2019-10-30T17:25:43Z
last-modified:  2025-04-01T10:43:50Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 80.243.0.0/16

Range	ASN	Company	Num of IPs
80.243.32.0/19	AS21413	Envia Tel GmbH	8,192
80.243.208.0/20	AS35635	Net Jump GmbH	4,096
80.243.96.0/20	AS29321	O2 Czech Republic, a.s.	4,096
80.243.0.0/20	AS24680	JS Company Compnet	4,096
80.243.112.0/20	AS31027	GlobalConnect A/S	4,096
80.243.176.0/20	AS20860	IOMART MANAGED SERVICES LIMITED	4,096
80.243.144.0/20	AS49332	Lanet Network Ltd	4,096
80.243.192.0/20	AS21336	INFORENT GmbH	4,096
80.243.160.0/20	AS21013	eww ag	4,096
80.243.240.0/20	AS20776	Outremer Telecom SAS	4,096
80.243.80.0/20	AS2860	NOS COMUNICACOES, S.A.	4,096
80.243.152.0/21	AS49332	Lanet Network Ltd	2,048
80.243.240.0/21	AS20776	Outremer Telecom Network	2,048
80.243.248.0/21	AS20776	Outremer Telecom Network	2,048
80.243.144.0/21	AS49332	Lanet Network Ltd	2,048
80.243.128.0/22	AS2914	Dom Tehniki Ltd	1,024
80.243.224.0/22	AS211582	ecomDATA GmbH	1,024
80.243.132.0/22	AS207636	Dom Tehniki Ltd	1,024
80.243.230.0/23	AS9009	Montreal	512
80.243.76.0/24	AS21332	Leased Line Subscribers Adress space	256
80.243.232.0/24	AS199493	BOBAN CAKIC trading as INTERNET SERVIS IBS	256
80.243.229.0/24	AS213296	Australian users	256
80.243.64.0/24	AS21332	JSK NTC (New Telephone Company)	256
80.243.65.0/24	AS21332	JSK NTC (New Telephone Company)	256
80.243.228.0/24	AS7018	Proline IT Ltd	256
80.243.139.0/24	AS207636	Dom Tehniki Ltd	256
80.243.70.0/24	AS21332	Network for subscribers	256
80.243.66.0/24	AS21332	Network for subscribers	256
80.243.71.0/24	AS21332	Leased Line Subscribers Adress space	256
80.243.67.0/24	AS21332	Network for subscribers	256
80.243.74.0/24	AS21332	Leased Line Subscribers Adress space	256
80.243.234.0/24	AS199493	BOBAN CAKIC trading as INTERNET SERVIS IBS	256
80.243.72.0/24	AS21332	Leased Line Subscribers Adress space	256
80.243.75.0/24	AS21332	Leased Line Subscribers Adress space	256
80.243.69.0/24	AS21332	Network for subscribers	256
80.243.233.0/24	AS199493	BOBAN CAKIC trading as INTERNET SERVIS IBS	256
80.243.68.0/24	AS21332	Network for subscribers	256
80.243.235.0/24	AS199493	BOBAN CAKIC trading as INTERNET SERVIS IBS	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Pingable IPs

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

IP Address	ASN	Details
80.243.237.13	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	3.58ms from Prague, CZ
80.243.236.74	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	3.60ms from Prague, CZ
80.243.239.41	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	0.79ms from Prague, CZ
80.243.238.80	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	4.82ms 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
139.171.208.38	AS7029 Windstream Communications LLC	0.78ms from Ashburn, US
84.180.1.86	AS3320 Deutsche Telekom AG	6.39ms from Frankfurt am Main, DE
163.171.156.166	AS54994 Meteverse Limited.	0.17ms from Frankfurt am Main, DE
37.104.79.6	AS25019 Saudi Telecom Company JSC	18.96ms from Jeddah, SA
86.157.90.198	AS2856 British Telecommunications PLC	4.04ms from London, GB
2.223.210.246	AS5607 Sky UK Limited	6.48ms from London, GB
154.242.203.22	AS36947 Telecom Algeria	14.75ms from Madrid, ES
73.46.45.22	AS7922 Comcast Cable Communications, LLC	9.02ms from Miami, US
182.89.105.70	AS4837 CHINA UNICOM China169 Backbone	5.44ms from Nanning, CN
111.89.231.150	AS2514 NTT PC Communications, Inc.	2.68ms from Osaka, JP
219.249.250.198	AS9318 SK Broadband Co Ltd	5.77ms from Seoul, KR
218.236.91.86	AS9318 SK Broadband Co Ltd	7.04ms from Seoul, KR
125.168.120.198	AS9443 Vocus Retail	1.59ms from Sydney, AU
31.179.149.182	AS9141 P4 Sp. z o.o.	5.89ms from Warsaw, PL
203.172.101.70	AS4750 CS LOXINFO PUBLIC COMPANY LIMITED	2.95ms from Bangkok, TH
179.37.103.102	AS22927 Telefonica de Argentina	1.74ms from Buenos Aires, AR
18.197.87.214	AS16509 Amazon.com, Inc.	0.17ms from Frankfurt am Main, DE
46.33.71.166	AS3257 GTT Communications Inc.	0.24ms from Frankfurt am Main, DE
156.235.219.246	AS134548 DXTL Tseung Kwan O Service	0.70ms from Hong Kong, HK
107.207.19.38	AS7018 AT&T Enterprises, LLC	1.43ms from Kansas City, US
109.108.150.134	AS61323 ANS ACADEMY LIMITED	0.43ms from Manchester, GB
173.11.53.134	AS7922 Comcast Cable Communications, LLC	8.18ms from Minneapolis, US
121.82.101.22	AS17511 OPTAGE Inc.	2.40ms from Osaka, JP
147.30.102.22	AS9198 JSC Kazakhtelecom	0.55ms from Pavlodar, KZ
128.196.172.230	AS1706 The University of Arizona	4.31ms from Phoenix, US

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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