85.70.0.0/17

AS5610 · O2 Czech Republic, a.s.

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Summary

Country	Czechia
Domain	o2.cz
ASN	AS5610
Parent Range	85.70.0.0/15
Registry	RIPE
ID	CZ-CZNET-20041102

WHOIS Details

inetnum:        85.70.0.0 - 85.71.255.255
netname:        CZ-CZNET-20041102
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.cz@o2.com
remarks:        * Hack Attacks, Illegal Activity, Violation, Scans, Probes, etc.
notify:         reg@telecom.cz
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         AS5610-MTN
created:        2004-11-02T15:24:10Z
last-modified:  2018-12-18T10:05:52Z
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

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:          85.70.0.0/15
descr:          CZ.CZNET
origin:         AS5610
mnt-by:         AS5610-MTN
created:        2004-11-15T14:47:43Z
last-modified:  2004-11-15T14:47:43Z
source:         RIPE

Overlapping Ranges

BGP prefixes that contain 85.70.0.0/17

Range	ASN	Company	Num of IPs
85.70.0.0/15	AS5610	O2 Czech Republic, a.s.	131,072

Nearby Ranges

BGP prefixes that overlap with 85.70.0.0/16

Range	ASN	Company	Num of IPs
85.70.0.0/15	AS5610	O2 Czech Republic, a.s.	131,072

Hosted domains

There are 87 domain names hosted across 45 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
85.70.16.109	fiseraci.cz	5
85.70.45.48	rodinnaceskatelevize.cz	3
85.70.100.6	tenvalka.cz	3
85.70.68.147	kupisi.cz	2
85.70.70.3	lysa.wtf	2
85.70.71.202	naus.cloud	2
85.70.70.71	o2store.cz	2
85.70.55.101	pacovsky.uk	1
85.70.70.106	pws.si	1
85.70.102.224	staprhome.cz	1
85.70.78.49	silut.cz	1
85.70.69.75	mrsmookey.online	1
85.70.112.226	michallpages.cz	1
85.70.45.138	selfhostistheway.gay	1
85.70.70.69	berusky.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

3,359 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
85.70.122.75	AS5610 O2 Czech Republic, a.s.	`4.57ms` from Prague, CZ
85.70.54.203	AS5610 O2 Czech Republic, a.s.	`4.16ms` from Prague, CZ
85.70.57.112	AS5610 O2 Czech Republic, a.s.	`4.01ms` from Prague, CZ
85.70.55.115	AS5610 O2 Czech Republic, a.s.	`4.47ms` from Prague, CZ
85.70.124.68	AS5610 O2 Czech Republic, a.s.	`4.56ms` from Prague, CZ
85.70.86.68	AS5610 O2 Czech Republic, a.s.	`3.60ms` from Prague, CZ
85.70.94.240	AS5610 O2 Czech Republic, a.s.	`5.69ms` from Prague, CZ
85.70.62.94	AS5610 O2 Czech Republic, a.s.	`4.49ms` from Prague, CZ
85.70.116.168	AS5610 O2 Czech Republic, a.s.	`4.12ms` from Prague, CZ
85.70.97.194	AS5610 O2 Czech Republic, a.s.	`10.36ms` from Prague, CZ
85.70.78.243	AS5610 O2 Czech Republic, a.s.	`6.05ms` from Prague, CZ
85.70.70.15	AS5610 O2 Czech Republic, a.s.	`1.67ms` from Prague, CZ
85.70.91.39	AS5610 O2 Czech Republic, a.s.	`4.73ms` from Prague, CZ
85.70.48.192	AS5610 O2 Czech Republic, a.s.	`1.29ms` from Prague, CZ
85.70.110.176	AS5610 O2 Czech Republic, a.s.	`10.21ms` from Prague, CZ
85.70.69.175	AS5610 O2 Czech Republic, a.s.	`1.20ms` from Prague, CZ
85.70.16.14	AS5610 O2 Czech Republic, a.s.	`6.98ms` from Prague, CZ
85.70.118.127	AS5610 O2 Czech Republic, a.s.	`1.41ms` from Prague, CZ
85.70.64.127	AS5610 O2 Czech Republic, a.s.	`5.57ms` from Prague, CZ
85.70.123.238	AS5610 O2 Czech Republic, a.s.	`4.38ms` from Prague, CZ
85.70.107.199	AS5610 O2 Czech Republic, a.s.	`12.71ms` from Prague, CZ
85.70.52.193	AS5610 O2 Czech Republic, a.s.	`1.53ms` from Prague, CZ
85.70.119.221	AS5610 O2 Czech Republic, a.s.	`4.33ms` from Prague, CZ
85.70.113.109	AS5610 O2 Czech Republic, a.s.	`4.13ms` from Prague, CZ
85.70.61.128	AS5610 O2 Czech Republic, a.s.	`3.96ms` 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
84.27.255.1	AS33915 Vodafone Libertel B.V.	`4.77ms` from Amsterdam, NL
84.106.31.1	AS33915 Vodafone Libertel B.V.	`2.18ms` from Amsterdam, NL
98.187.72.65	AS22773 Cox Communications Inc.	`1.23ms` from Ashburn, US
190.191.205.1	AS7303 Telecom Argentina S.A.	`4.63ms` from Asuncion, PY
201.88.52.1	AS8167 V tal	`6.78ms` from Brasilia, BR
41.140.0.1	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`5.05ms` from Casablanca, MA
111.23.88.65	AS56047 China Mobile communications corporation	`7.87ms` from Changsha, CN
125.67.226.129	AS4134 CHINANET-BACKBONE	`4.57ms` from Chengdu, CN
24.236.161.1	AS20115 Charter Communications LLC	`10.69ms` from Chicago, US
70.63.27.97	AS10796 Charter Communications Inc	`2.36ms` from Columbus, US
200.250.53.129	AS4230 CLARO S.A.	`1.40ms` from Curitiba, BR
205.169.218.225	AS209 CenturyLink Communications, LLC	`0.33ms` from Denver, US
68.219.30.145	AS8075 Microsoft Corporation	`0.18ms` from Dublin, IE
74.129.128.1	AS10796 Charter Communications Inc	`13.01ms` from Flint, US
27.157.27.1	AS4134 CHINANET-BACKBONE	`8.19ms` from Fuzhou, CN
61.143.230.193	AS4134 CHINANET-BACKBONE	`7.57ms` from Guangzhou, CN
117.28.240.177	AS4809 China Telecom Next Generation Carrier Network	`12.30ms` from Guangzhou, CN
87.143.201.1	AS3320 Deutsche Telekom AG	`2.26ms` from Hamburg, DE
61.14.129.193	AS4637 Telstra Global	`1.48ms` from Hong Kong, HK
144.48.219.1	AS55649 METRONET-HK	`2.69ms` from Hong Kong, HK
88.227.36.1	AS9121 Turk Telekomunikasyon Anonim Sirketi	`16.73ms` from Istanbul, TR
98.186.172.1	AS22773 Cox Communications Inc.	`4.10ms` from Kansas City, US
70.238.227.97	AS7018 AT&T Enterprises, LLC	`8.40ms` from Kansas City, US
193.38.108.193	AS5089 Virgin Media Limited	`16.48ms` from London, GB
82.34.160.1	AS5089 Virgin Media Limited	`8.09ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -f3 -m7 85.70.44.145

traceroute to 85.70.44.145 (85.70.44.145): 7 hops max, 52 byte packets

3 [AS24971] 83.167.254.192 0.19 ms

4 [AS24971] 83.167.254.159 3.824 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Brno, CZ

On November 22nd 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.

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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