AS number details

AS43542

OptoNet Communication, spol. s.r.o.  ·  optonet.cz

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AS43542 – OptoNet Communication, spol. s.r.o.

Field Value
Country Czechia
Website optonet.cz
Hosted domains 2,617
Number of IPv4 9,216
Number of IPv6 79,228,162,514,264,337,593,543,950,336
ASN type ISP
Registry ripe
Allocated 17 years ago on Aug 20, 2007
Updated 2 years ago on Jun 27, 2022
Netblock Company Num of IPs
185.85.92.0/22 OptoNet Communication, spol. s.r.o. 1,024
78.156.128.0/19 OptoNet Communication, spol. s.r.o. 8,192
Netblock Company
2a00:d940::/32 OptoNet Communication, spol. s.r.o.
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WHOIS Details


ASHandle:       AS43542
OrgID:          AS43542
ASName:         AS43542
ASNumber:       AS43542
RegDate:        0000-00-00
Updated:        0000-00-00
TechHandle:     AA00-AAAA
Source:         AAAA

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Hosted Domains

There are 2,617 domain names hosted across 56 IP addresses on this ASN.

IP Address Domain Domains on this IP
78.156.158.199 bohdanec.cz 1,163
78.156.158.194 neratovice.cz 510
78.156.158.75 martin.sk 235
78.156.158.200 kejzlice.eu 126
78.156.156.10 haejunior.cz 104
78.156.158.152 ticmikulov.cz 83
78.156.158.74 prokladno.cz 79
78.156.156.50 etipy.cz 75
78.156.158.91 mesto-most.cz 68
78.156.143.203 cenkovice-ubytovani.cz 36
78.156.158.72 kddobris.cz 28
78.156.158.93 mestoprokvalitnizivot.eu 21
78.156.135.74 radiojournal.cz 16
78.156.158.71 jvpmesto.cz 15
78.156.158.170 elbooker.com 13
78.156.158.83 ichaloupkova.cz 12
78.156.157.3 lexipro.cz 11
78.156.158.73 ledeko.cz 11
78.156.158.197 jihlava-city.cz 10
78.156.156.53 tojehned.cz 10
78.156.157.57 divinglamp.eu 8
78.156.156.43 optokonkable.com 7
78.156.128.12 optomedia.cz 7
78.156.149.7 jihlavskepodzemi.cz 7
78.156.158.153 infomikulovsko.cz 5
78.156.158.81 pohorskaves.cz 4
78.156.140.148 portalklienta.cz 4
78.156.140.84 jisr-institute.com 3
78.156.140.195 paveldolezal.com 3
78.156.156.66 sefmechanik.cz 3
78.156.156.13 nodee.cz 2
78.156.156.4 obradni-sine.cz 2
78.156.156.78 jelenichata.cz 2
78.156.158.164 ap-amore.sk 2
78.156.136.125 g4tech.cz 2
78.156.147.18 magistrat-jihlava.cz 2
78.156.140.65 lepart.cz 2
78.156.158.235 servismobilu.com 2
78.156.158.198 mulanskroun.cz 2
78.156.158.82 msprikrizi.eu 2
78.156.158.171 iskolicka.cz 2
78.156.143.158 vw-modifi.eu 1
78.156.147.70 naali.cz 1
78.156.140.54 pokys.eu 1
78.156.135.248 reklamni-dratene-stojany.cz 1
78.156.135.114 hojkov.eu 1
78.156.158.40 salonmarkyza.cz 1
78.156.143.190 mivo-elektronik.cz 1
78.156.140.132 ceskydisk.cz 1
78.156.135.78 ceskymail.cz 1

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Useful for Cybersecurity

Peers

There are 29 peers for this ASN.

Peers Name
AS1239 Sprint
AS14840 BR.Digital Provider
AS16019 Vodafone Czech Republic a.s.
AS174 Cogent Communications
AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS202979 NGA Services, spol. s r.o.
AS207945 CNI Group s.r.o.
AS212483 LEVEL EIGHTY-SIX COMMUNICATIONS LTD
AS24482 SG.GS
AS2852 CESNET z.s.p.o.
AS28972 M-SOFT, spol. s r.o.
AS29049 Delta Telecom Ltd
AS29504 Freenet Liberec, z.s.
AS31042 Serbia BroadBand-Srpske Kablovske mreze d.o.o.
AS36236 NetActuate, Inc
AS39120 Convergenze S.p.A.
AS40994 Hohl IT e.U.
AS41047 Bart Vrancken trading as MLaB
AS44104 LCJ Invest, a.s.
AS4455 IX Reach Ltd
AS48091 Kraj Vysocina
AS49544 i3D.net B.V
AS51185 MainStreaming SpA
AS5405 Inter.link GmbH
AS57288 StaMPi, spol. s r.o.
AS57463 NetIX Communications JSC
AS6881 NIX.CZ z.s.p.o.
AS6939 Hurricane Electric LLC
AS8218 Zayo Infrastructure France SA
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Upstreams

There are 3 upstreams for this ASN.

upstreams Name
AS1239 Sprint
AS16019 Vodafone Czech Republic a.s.
AS174 Cogent Communications
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Downstreams

There are 5 downstreams for this ASN.

Downstreams Name
AS202979 NGA Services, spol. s r.o.
AS207945 CNI Group s.r.o.
AS44104 LCJ Invest, a.s.
AS48091 Kraj Vysocina
AS57288 StaMPi, spol. s r.o.
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Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS43542 at robtex.

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