AS number details

AS43542

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

Czechia

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

Field Value
Country Czechia
Website optonet.cz
Hosted domains 2,443
Number of IPv4 8,192
Number of IPv6 79,228,162,514,264,337,593,543,950,336
ASN type ISP
Registry ripe
Allocated 18 years ago on Aug 20, 2007
Updated a year ago on Jun 07, 2024

IP Ranges

Netblock Company Num of IPs
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

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                                                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 2,443 domain names hosted across 55 IP addresses on this ASN.

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IP Address Domain Domains on this IP
78.156.158.199 ██████████ 1,050
78.156.158.194 ██████████ 384
78.156.158.200 ██████████ 369
78.156.158.75 █████████ 229
78.156.156.10 ██████████ 123
78.156.158.91 ██████████ 84
78.156.158.74 ██████████ 72
78.156.143.203 █████████ 38
78.156.158.152 ██████████ 18
78.156.158.72 ██████████ 17

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Peers

There are 32 peers for this ASN.

Peers Name
AS14840 BR.Digital Provider
AS16019 Vodafone Czech Republic a.s.
AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS198150 SIACOM JSC
AS202979 NGA Services, spol. s r.o.
AS207945 CNI Group s.r.o.
AS21215 UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd
AS212483 LEVEL EIGHTY-SIX COMMUNICATIONS LTD
AS22356 Durand do Brasil Ltda
AS24482 SG.GS
AS263444 Open X Tecnologia Ltda
AS29504 Freenet Liberec, z.s.
AS32590 Valve Corporation
AS36236 NetActuate, Inc
AS39120 Convergenze S.p.A.
AS40994 Hohl IT e.U.
AS43733 Viva Armenia CJSC
AS44104 LCJ Invest, a.s.
AS44306 OMONIA d.o.o.
AS4455 IX Reach Ltd
AS47200 NIX.CZ z.s.p.o.
AS48091 Kraj Vysocina
AS49544 i3D.net B.V
AS51185 MainStreaming SpA
AS5405 Inter.link GmbH
AS57463 NetIX Communications JSC
AS6204 INTERKVM HOST SRL
AS6663 Euroweb Romania S.R.L.
AS6855 Slovak Telekom, a.s.
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
AS16019 Vodafone Czech Republic a.s.
AS6855 Slovak Telekom, a.s.
AS6939 Hurricane Electric LLC
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Downstreams

There are 4 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
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Pingable IPs

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

IP Address ASN Details
2a00:d940:3:2000::1 AS43542 OptoNet Communication, spol. s.r.o. 2.92ms from Prague, CZ
78.156.155.68 AS43542 OptoNet Communication, spol. s.r.o. 1.91ms from Prague, CZ
78.156.150.60 AS43542 OptoNet Communication, spol. s.r.o. 2.67ms from Prague, CZ
78.156.143.17 AS43542 OptoNet Communication, spol. s.r.o. 1.89ms from Prague, CZ
78.156.133.125 AS43542 OptoNet Communication, spol. s.r.o. 1.79ms from Prague, CZ
78.156.128.17 AS43542 OptoNet Communication, spol. s.r.o. 1.84ms from Prague, CZ
78.156.131.249 AS43542 OptoNet Communication, spol. s.r.o. 1.99ms from Prague, CZ
78.156.149.33 AS43542 OptoNet Communication, spol. s.r.o. 2.05ms from Prague, CZ
78.156.159.246 AS43542 OptoNet Communication, spol. s.r.o. 1.87ms from Prague, CZ
78.156.147.236 AS43542 OptoNet Communication, spol. s.r.o. 2.01ms from Prague, CZ
78.156.144.20 AS43542 OptoNet Communication, spol. s.r.o. 2.70ms from Prague, CZ
78.156.137.9 AS43542 OptoNet Communication, spol. s.r.o. 1.83ms from Prague, CZ
78.156.154.1 AS43542 OptoNet Communication, spol. s.r.o. 6.24ms from Prague, CZ
78.156.152.17 AS43542 OptoNet Communication, spol. s.r.o. 2.28ms from Prague, CZ
78.156.135.89 AS43542 OptoNet Communication, spol. s.r.o. 1.91ms from Prague, CZ
2a00:d940:0:b::3 AS43542 OptoNet Communication, spol. s.r.o. 1.84ms from Prague, CZ
78.156.158.189 AS43542 OptoNet Communication, spol. s.r.o. 1.86ms from Prague, CZ
78.156.157.73 AS43542 OptoNet Communication, spol. s.r.o. 1.81ms from Prague, CZ
78.156.156.94 AS43542 OptoNet Communication, spol. s.r.o. 1.87ms 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
208.200.99.70 AS701 Verizon Business 11.53ms from Ashburn, US
73.110.186.198 AS7922 Comcast Cable Communications, LLC 3.54ms from Chicago, US
93.65.10.54 AS30722 Vodafone Italia S.p.A. 7.92ms from Milan, IT
5.143.178.246 AS15468 PJSC Rostelecom 10.04ms from Moscow, RU
170.168.65.134 AS198769 LLC 3data DC 1.49ms from Moscow, RU
185.148.36.38 AS48347 JSC Mediasoft ekspert 0.83ms from Moscow, RU
180.140.115.182 AS4134 CHINANET-BACKBONE 5.51ms from Nanning, CN
4.68.71.54 AS3356 Level 3 Parent, LLC 0.33ms from Pittsburgh, US
83.21.71.182 AS5617 Orange Polska Spolka Akcyjna 4.12ms from Poznan, PL
82.99.170.246 AS25248 RADIOKOMUNIKACE a.s. 0.49ms from Prague, CZ
50.245.181.86 AS7922 Comcast Cable Communications, LLC 7.69ms from San Jose, US
175.245.173.134 AS4766 Korea Telecom 4.28ms from Seoul, KR
101.132.249.230 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 2.56ms from Shanghai, CN
219.219.3.86 AS4538 China Education and Research Network Center 10.40ms from Shanghai, CN
1.160.197.134 AS3462 Data Communication Business Group 0.44ms from Taipei, TW
220.225.196.246 AS18101 Reliance Communications Ltd.DAKC MUMBAI 18.64ms from Bengaluru, IN
196.64.214.118 AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM 6.65ms from Casablanca, MA
34.58.27.198 AS396982 Google LLC 0.11ms from Council Bluffs, US
87.163.13.54 AS3320 Deutsche Telekom AG 5.08ms from Frankfurt am Main, DE
116.171.38.102 AS4837 CHINA UNICOM China169 Backbone 3.96ms from Guiyang, CN
154.38.202.198 AS140227 Hong Kong Communications International Co., Limited 0.81ms from Hong Kong, HK
109.145.94.214 AS2856 British Telecommunications PLC 3.94ms from London, GB
88.14.43.22 AS3352 TELEFONICA DE ESPANA S.A.U. 6.74ms from Madrid, ES
171.109.24.38 AS4134 CHINANET-BACKBONE 4.34ms from Nanning, CN
199.169.242.22 AS40410 FRIT 2.48ms from New York City, US

Traceroute

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

$
traceroute -a -n -q1 -f3 78.156.147.81
traceroute to 78.156.147.81 (78.156.147.81): 64 hops max, 52 byte packets
3 [] 91.210.17.48 2.051 ms
4 *
Measurement taken from IPinfo ProbeNet in Prague, CZ
On

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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