5.102.48.0/20

AS42908 · ORIGINAL AS CZ-NORDICTELECOMREGIONAL

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Summary

Country	Czechia
Domain	o2.cz
ASN	AS42908
Registry	RIPE
ID	CZ-CZNET-20120627

WHOIS Details

inetnum:        5.102.48.0 - 5.102.63.255
netname:        CZ-CZNET-20120627
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:        2025-04-01T07:33:39Z
last-modified:  2025-04-01T07:33:39Z
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:          5.102.48.0/20
descr:          CZ-NORDICTELECOMREGIONAL RO 5.102.48.0/20
origin:         AS42908
mnt-by:         mnt-nordictelecom
mnt-by:         AS5610-MTN
created:        2021-03-12T10:40:21Z
last-modified:  2025-04-01T10:29:59Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 5.102.0.0/16

Range	ASN	Company	Num of IPs
5.102.192.0/18	AS47956	XFone 018 Ltd	16,384
5.102.0.0/19	AS198471	Opnet Srl	8,192
5.102.224.0/19	AS47956	XFONE COMMUNICATION LTD	8,192
5.102.192.0/19	AS47956	XFONE COMMUNICATION LTD	8,192
5.102.80.0/20	AS8586	TalkTalk Communications Limited	4,096
5.102.144.0/21	AS59414	cloudscale.ch AG	2,048
5.102.176.0/21	AS204170	Awaser Oman LLC	2,048
5.102.184.0/21	AS6908	Six Degrees Technology Group Limited	2,048
5.102.160.0/21	AS199284	Thueringer Netkom GmbH	2,048
5.102.152.0/21	AS28890	INSYS LLC	2,048
5.102.40.0/22	AS200999	CloudFerro S.A	1,024
5.102.100.0/22	AS203057	Private Customer	1,024
5.102.124.0/22	AS215355	Alice Networks Ltd	1,024
5.102.104.0/22	AS29802	Private Customer	1,024
5.102.68.0/22	AS41023	Agencja Rozwoju Regionalnego ARREKS SA	1,024
5.102.32.0/22	AS60115	Stadtverwaltung St. Gallen	1,024
5.102.96.0/22	AS7488	etclouds limited	1,024
5.102.116.0/22	AS834	Internet Utilities Europe and Asia Limited	1,024
5.102.120.0/22	AS834	Internet Utilities Europe and Asia Limited	1,024
5.102.66.0/23	AS41023	Agencja Rozwoju Regionalnego ARREKS SA	512
5.102.136.0/23	AS52102	Tribion B.V.	512
5.102.64.0/23	AS41023	Agencja Rozwoju Regionalnego ARREKS SA	512
5.102.46.0/24	AS208423	GlobalLogic Poland Sp. z o.o.	256
5.102.134.0/24	AS207191	T2O HQ NETWORK	256
5.102.131.0/24	AS201359	YMEDIA primany BGP access - MADRID	256
5.102.72.0/24	AS51110	IDOM TECHNOLOGIES SAS	256
5.102.73.0/24	AS51110	IDOM TECHNOLOGIES SAS	256
5.102.75.0/24	AS51110	IDOM TECHNOLOGIES SAS	256
5.102.76.0/24	AS51110	IDOM TECHNOLOGIES SAS	256
5.102.77.0/24	AS51110	IDOM TECHNOLOGIES SAS	256
5.102.78.0/24	AS51110	IDOM TECHNOLOGIES SAS	256
5.102.79.0/24	AS51110	IDOM TECHNOLOGIES SAS	256
5.102.37.0/24	AS39130	PP Merezha plus	256
5.102.135.0/24	AS200380	MULTIHOMED ROUTER IP RANGE FOR IMAGAR INFORMATICA	256
5.102.38.0/24	AS9304	Beijing Tehuadun Starkley Trading Co. Ltd	256
5.102.133.0/24	AS209259	AENOR MULTIHOMED BGP NETWORK	256
5.102.45.0/24	AS210272	GlobalLogic Poland Sp. z o.o.	256
5.102.132.0/24	AS199976	DUNE TECHNOLOGY DEV CLOUD NETWORK	256
5.102.44.0/24	AS208984	GlobalLogic Poland Sp. z o.o.	256
5.102.39.0/24	AS834	Internet Utilities Europe and Asia Limited	256
5.102.130.0/24	AS199976	DUNE TECHNOLOGY CLOUD	256
5.102.47.0/24	AS208424	GlobalLogic Poland Sp. z o.o.	256

Hosted domains

There are 29 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
5.102.55.10	kublov.net	9
5.102.61.223	nejlepsideti.cz	2
5.102.53.87	kroniky.net	2
5.102.53.38	berounreality.cz	2
5.102.56.37	joga-doma.cz	2
5.102.51.34	viktora.cz	2
5.102.55.93	warpig.cz	2
5.102.57.134	veterina-hrib.cz	1
5.102.50.37	kavalirovi.cz	1
5.102.52.110	ecovisblf.com	1
5.102.53.68	supcik.online	1
5.102.53.91	sportysnap.fun	1
5.102.56.48	housky.eu	1
5.102.52.51	nextpatterns.eu	1
5.102.53.73	dbase.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

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

IP Address	ASN	Details
5.102.50.66	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`1.74ms` from Prague, CZ
5.102.54.8	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`1.76ms` from Prague, CZ
5.102.51.33	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`1.82ms` from Prague, CZ
5.102.58.124	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`2.56ms` from Prague, CZ
5.102.53.41	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.88ms` from Prague, CZ
5.102.62.209	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`1.35ms` from Prague, CZ
5.102.63.171	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`2.79ms` from Prague, CZ
5.102.61.66	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`1.86ms` from Prague, CZ
5.102.57.113	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`1.91ms` from Prague, CZ
5.102.52.104	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`1.37ms` from Prague, CZ
5.102.55.204	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`2.63ms` from Prague, CZ
5.102.48.121	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.91ms` from Prague, CZ
5.102.56.101	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`1.36ms` from Prague, CZ
5.102.60.10	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`2.17ms` 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
117.213.115.180	AS9829 National Internet Backbone	`7.93ms` from Chennai, IN
104.224.88.4	AS401605 Web Host Most, LLC	`0.22ms` from Chicago, US
34.241.131.4	AS16509 Amazon.com, Inc.	`0.22ms` from Dublin, IE
86.12.101.196	AS5089 Virgin Media Limited	`8.50ms` from Erith, GB
1.232.123.4	AS9318 SK Broadband Co Ltd	`1.61ms` from Incheon, KR
88.240.75.212	AS9121 Turk Telekomunikasyon Anonim Sirketi	`11.45ms` from Istanbul, TR
176.208.6.20	AS12389 PJSC Rostelecom	`12.50ms` from Krasnoyarsk, RU
122.210.0.148	AS17506 ARTERIA Networks Corporation	`1.40ms` from Osaka, JP
101.140.192.52	AS17511 OPTAGE Inc.	`3.00ms` from Osaka, JP
153.188.110.84	AS4713 NTT DOCOMO BUSINESS,Inc.	`4.94ms` from Osaka, JP
27.194.211.228	AS4837 CHINA UNICOM China169 Backbone	`5.17ms` from Qingdao, CN
200.164.7.164	AS7738 V tal	`8.88ms` from Rio de Janeiro, BR
140.150.204.196	AS7393 CYBERCON, INC.	`0.45ms` from St. Louis, US
54.79.179.228	AS16509 Amazon.com, Inc.	`0.12ms` from Sydney, AU
185.91.95.4	AS49033 Critical Core BV	`0.16ms` from Amsterdam, NL
96.231.162.36	AS701 Verizon Business	`2.24ms` from Ashburn, US
101.98.45.196	AS9790 Two Degrees Networks Limited	`1.45ms` from Auckland, NZ
40.125.165.180	AS58593 Shanghai Blue Cloud Technology Co.,Ltd	`4.02ms` from Beijing, CN
35.92.121.212	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
63.97.201.4	AS701 Verizon Business	`1.22ms` from Dallas, US
34.35.132.164	AS396982 Google LLC	`0.11ms` from Johannesburg, ZA
187.87.125.36	AS28220 Alares Cabo Servicos de Telecomunicacoes S.A.	`5.75ms` from Osasco, BR
91.237.212.100	AS197744 Credit Agricole - Group Infrastructure Platform ( CA-GIP ) SAS	`3.08ms` from Paris, FR
193.55.62.20	AS2200 Renater	`1.33ms` from Paris, FR
24.16.83.52	AS7922 Comcast Cable Communications, LLC	`5.00ms` from Seattle, US

Traceroute

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

traceroute -a -n -q1 -f4 5.102.53.65

traceroute to 5.102.53.65 (5.102.53.65): 64 hops max, 52 byte packets

4 [AS5610] 194.228.77.51 0.723 ms

5 [AS42908] 5.102.53.65 1.039 ms

Measurement taken from

IPinfo ProbeNet in Prague, CZ

On January 19th 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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