All IP Ranges
88.0.0.0/8
AS5610 | 88.100.0.0/15

88.100.0.0/15

AS5610 · O2 Czech Republic, a.s.

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Summary

Country	Czechia
Domain	o2.cz
ASN	AS5610
Parent Range	88.100.0.0/14
Registry	RIPE
ID	CZ-CZNET-20051004

WHOIS Details

inetnum:        88.100.0.0 - 88.103.255.255
netname:        CZ-CZNET-20051004
country:        CZ
org:            ORG-STaN1-RIPE
admin-c:        CZO2-RIPE
admin-c:        VAKO1-RIPE
tech-c:         CZO2-RIPE
tech-c:         VAKO1-RIPE
status:         ALLOCATED PA
remarks:        For all problems with spam
remarks:        please contact postmaster@iol.cz
remarks:        Abuse Contact:abuse@o2.cz
remarks:        * Hack Attacks, Illegal Activity, Violation, Scans, Probes, etc.
notify:         reg@telecom.cz
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         AS5610-MTN
created:        2005-10-04T09:32:56Z
last-modified:  2018-12-18T09:09:42Z
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:          88.103.192.0/18
descr:          CZ.CZNET
origin:         AS5610
notify:         hostmaster@iol.cz
mnt-by:         AS5610-MTN
created:        2015-05-25T07:39:48Z
last-modified:  2015-05-25T07:39:48Z
source:         RIPE

Overlapping Ranges

BGP prefixes that contain 88.100.0.0/15

Range	ASN	Company	Num of IPs
88.100.0.0/14	AS5610	O2 Czech Republic, a.s.	262,144

Nearby Ranges

BGP prefixes that overlap with 88.0.0.0/8

Range	ASN	Company	Num of IPs
88.224.0.0/11	AS9121	Turk Telekomunikasyon Anonim Sirketi	2,097,152
88.160.0.0/11	AS12322	Free SAS	2,097,152
88.64.0.0/12	AS3209	Vodafone GmbH	1,048,576
88.88.0.0/13	AS2119	Telenor Norge AS	524,288
88.120.0.0/13	AS12322	SCALEWAY S.A.S.	524,288
88.136.0.0/14	AS15557	Residentiel	262,144
88.192.0.0/14	AS1759	Telia Finland Oyj	262,144
88.112.0.0/14	AS719	Elisa Oyj	262,144
88.100.0.0/14	AS5610	O2 Czech Republic, a.s.	262,144
88.154.0.0/15	AS34058	Limited Liability Company lifecell	131,072
88.116.0.0/15	AS8447	A1 Telekom Austria AG	131,072
88.152.0.0/15	AS3209	Vodafone West GmbH	131,072
88.140.0.0/15	AS15557	Data	131,072
88.199.0.0/16	AS20960	TK Telekom sp. z o.o.	65,536
88.219.0.0/16	AS15557	Societe Francaise Du Radiotelephone - SFR SA	65,536
88.129.0.0/16	AS29518	Bredband2 AB	65,536
88.128.0.0/16	AS3320	Telekom Deutschland GmbH	65,536
88.196.0.0/16	AS3249	Telia Eesti AS	65,536
88.159.0.0/16	AS1136	KPN B.V.	65,536
88.131.0.0/16	AS1257	Tele2 Sverige AB	65,536
88.142.0.0/16	AS15557	Data	65,536
88.221.0.0/16	AS20940	Akamai International B.V.	65,536
88.217.0.0/16	AS8767	M-net Telekommunikations GmbH	65,536
88.99.0.0/16	AS24940	Hetzner Online GmbH	65,536
88.134.0.0/16	AS3209	Vodafone GmbH	65,536
88.154.0.0/16	AS34058	Limited Liability Company lifecell	65,536
88.198.0.0/16	AS24940	Hetzner Online GmbH	65,536
88.27.0.0/16	AS3352	Telefonica de Espana SAU (NCC#2007050901) Red de servicios IP Spain	65,536
88.155.0.0/16	AS34058	Limited Liability Company lifecell	65,536
88.130.0.0/16	AS8881	1&1 Versatel GmbH	65,536
88.148.0.0/17	AS29119	Ion Airenetworks Mobile	32,768
88.146.0.0/17	AS29208	Quantcom, a.s.	32,768
88.150.0.0/17	AS43341	MDlink online service center GmbH	32,768
88.202.0.0/17	AS29286	SKYLOGIC S.P.A.	32,768
88.204.128.0/17	AS9198	JSC Kazakhtelecom	32,768
88.206.0.0/17	AS8369	Intersvyaz-2 JSC	32,768
88.150.128.0/17	AS20860	IOMART MANAGED SERVICES LIMITED	32,768
88.148.0.0/17	AS6939	Ion Airenetworks Mobile	32,768
88.148.0.0/17	AS6830	Ion Airenetworks Mobile	32,768
88.200.0.0/17	AS2107	ARNES	32,768
88.207.0.0/17	AS31012	A1 Hrvatska d.o.o.	32,768
88.147.128.0/17	AS12389	PJSC Rostelecom	32,768
88.203.128.0/17	AS8717	A1 Bulgaria EAD	32,768
88.148.128.0/17	AS16086	DNA Oyj	32,768
88.197.0.0/17	AS8643	Panepistimioupolis, Ilisia	32,768
88.203.0.0/17	AS12709	Melita Limited	32,768
88.197.128.0/17	AS5432	Full Telecom NV	32,768
88.207.128.0/17	AS6661	POST Luxembourg	32,768
88.149.0.0/17	AS12969	Ljosleidarinn ehf	32,768
88.146.128.0/17	AS16019	Vodafone Czech Republic a.s.	32,768

Hosted domains

There are 196 domain names hosted across 124 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
88.100.254.97	3dtiskvm.cz	12
88.100.255.74	projekthrou.cz	8
88.101.0.179	viagnostics.com	6
88.100.20.196	c0denil.dev	6
88.101.93.63	kvetinyceskydub.cz	5
88.101.143.235	cistypozemek.eu	5
88.100.55.18	werox.sk	5
88.100.139.111	ivetsladkova.cz	4
88.100.17.4	rovanbud.com	4
88.101.224.7	rudlysgames.site	4
88.100.255.156	arleta-ivf.co.uk	4
88.101.200.114	tadeasjanak.cz	4
88.101.158.180	attplus.cz	3
88.101.85.206	elidro.cz	3
88.101.155.89	strojirnalitvinov.cz	2
88.101.93.207	limnet.cloud	2
88.101.100.47	zluta-ratiboricka.cz	2
88.101.113.82	netlogy.cz	2
88.100.255.143	haasandsohn.cz	2
88.101.114.77	cesky-market.eu	2

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

20,331 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
88.100.236.161	AS5610 O2 Czech Republic, a.s.	`1.37ms` from Prague, CZ
88.100.131.177	AS5610 O2 Czech Republic, a.s.	`6.86ms` from Prague, CZ
88.100.116.81	AS5610 O2 Czech Republic, a.s.	`8.17ms` from Prague, CZ
88.100.235.212	AS5610 O2 Czech Republic, a.s.	`1.40ms` from Prague, CZ
88.100.149.162	AS5610 O2 Czech Republic, a.s.	`1.50ms` from Prague, CZ
88.100.120.106	AS5610 O2 Czech Republic, a.s.	`6.99ms` from Prague, CZ
88.100.3.173	AS5610 O2 Czech Republic, a.s.	`10.04ms` from Prague, CZ
88.100.146.193	AS5610 O2 Czech Republic, a.s.	`1.43ms` from Prague, CZ
88.100.46.9	AS5610 O2 Czech Republic, a.s.	`10.06ms` from Prague, CZ
88.100.225.91	AS5610 O2 Czech Republic, a.s.	`1.24ms` from Prague, CZ
88.100.124.27	AS5610 O2 Czech Republic, a.s.	`8.26ms` from Prague, CZ
88.100.201.25	AS5610 O2 Czech Republic, a.s.	`10.06ms` from Prague, CZ
88.100.134.182	AS5610 O2 Czech Republic, a.s.	`9.36ms` from Prague, CZ
88.100.234.176	AS5610 O2 Czech Republic, a.s.	`1.41ms` from Prague, CZ
88.100.160.136	AS5610 O2 Czech Republic, a.s.	`6.86ms` from Prague, CZ
88.100.158.230	AS5610 O2 Czech Republic, a.s.	`1.42ms` from Prague, CZ
88.100.189.55	AS5610 O2 Czech Republic, a.s.	`10.18ms` from Prague, CZ
88.100.27.223	AS5610 O2 Czech Republic, a.s.	`1.16ms` from Prague, CZ
88.100.143.93	AS5610 O2 Czech Republic, a.s.	`6.77ms` from Prague, CZ
88.100.8.187	AS5610 O2 Czech Republic, a.s.	`8.40ms` from Prague, CZ
88.100.14.239	AS5610 O2 Czech Republic, a.s.	`10.36ms` from Prague, CZ
88.100.233.225	AS5610 O2 Czech Republic, a.s.	`1.51ms` from Prague, CZ
88.100.43.48	AS5610 O2 Czech Republic, a.s.	`6.79ms` from Prague, CZ
88.100.19.86	AS5610 O2 Czech Republic, a.s.	`5.18ms` from Prague, CZ
88.100.105.59	AS5610 O2 Czech Republic, a.s.	`6.59ms` 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
78.31.250.159	AS214481 Wojciech Czapkowicz	`0.44ms` from Amsterdam, NL
73.117.55.63	AS7922 Comcast Cable Communications, LLC	`9.84ms` from Ashburn, US
76.97.90.175	AS7922 Comcast Cable Communications, LLC	`4.33ms` from Atlanta, US
113.93.227.255	AS136199 CHINANET Guangdong province Yuedong MAN network	`3.06ms` from Guangzhou, CN
70.113.148.47	AS11427 Charter Communications Inc	`5.93ms` from Houston, US
23.124.24.47	AS7018 AT&T Enterprises, LLC	`16.86ms` from Los Angeles, US
122.100.135.111	AS4609 Companhia de Telecomunicacoes de Macau SARL	`1.68ms` from Macau, MO
98.56.122.207	AS7922 Comcast Cable Communications, LLC	`9.49ms` from Miami, US
79.45.154.15	AS3269 Telecom Italia S.p.A.	`1.78ms` from Milan, IT
74.105.91.63	AS701 Verizon Business	`2.26ms` from New York City, US
176.166.76.175	AS5410 Bouygues Telecom SA	`8.59ms` from Paris, FR
34.239.78.207	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US
152.163.232.31	AS7203 Leaseweb USA, Inc.	`0.14ms` from San Jose, US
222.107.251.63	AS4766 Korea Telecom	`1.43ms` from Seoul, KR
34.84.227.143	AS396982 Google LLC	`0.15ms` from Tokyo, JP
43.130.72.223	AS132203 Tencent Building, Kejizhongyi Avenue	`0.36ms` from Ashburn, US
110.231.218.239	AS4837 CHINA UNICOM China169 Backbone	`13.82ms` from Beijing, CN
81.240.255.207	AS5432 Proximus NV	`0.62ms` from Brussels, BE
194.135.200.159	AS59790 Marco Bungalski GmbH	`0.41ms` from Frankfurt am Main, DE
31.48.114.15	AS2856 British Telecommunications PLC	`11.96ms` from London, GB
185.171.222.175	AS48704 Freshwave Services Limited	`0.54ms` from London, GB
8.228.229.63	AS396982 Google LLC	`0.07ms` from Melbourne, AU
121.228.129.255	AS4134 CHINANET-BACKBONE	`4.76ms` from Nanjing, CN
223.216.248.191	AS4713 NTT DOCOMO BUSINESS,Inc.	`6.96ms` from Osaka, JP
161.153.38.111	AS31898 Oracle Corporation	`0.25ms` from Phoenix, US

Traceroute

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

traceroute -a -n -q1 -f3 88.100.46.9

traceroute to 88.100.46.9 (88.100.46.9): 64 hops max, 52 byte packets

3 [AS5610] 194.228.115.33 0.726 ms

4 [AS5610] 194.228.115.39 1.298 ms

5 *

6 [AS5610] 90.183.197.115 0.614 ms

7 *

8 [AS5610] 88.100.46.9 10.337 ms

Measurement taken from

IPinfo ProbeNet in Prague, CZ

On February 7th 2026

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