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Summary IP address summary information Name
OptoNet Communication, spol. s.r.o. Country
Website
Hosted domains
2,256 IPv4 addresses
8,192 IPv6 addresses
7.92 × 1028 ASN type
ISP Registry
RIPE Allocated
19 years ago on Aug 20, 2007 Updated
6 months ago on Mar 16, 2026
WHOIS
ASHandle: █████
OrgID: █████
ASName: ██████
ASNumber: AS█████
RegDate: ████-██-██
Updated: ████-██-██
TechHandle: ████-████
Source: ████
Powered by ASN to WHOIS data Important routers in AS43542
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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Traceroute Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more. Traceroute →
$ traceroute -a -n -q1 -f3 -m12 78.156.151.198
traceroute to 78.156.151.198 (78.156.151.198 ): 12 hops max, 52 byte packets
Measurement taken from IPinfo ProbeNet in Tashkent, UZ
On September 10, 2026
There are 3 upstreams for this ASN.
ASN Name Rank AS6855 Slovak Telekom, a.s. #339 AS6939 Hurricane Electric LLC #18 AS16019 Vodafone Czech Republic a.s. #411
There are 4 downstreams for this ASN.
Important routers in AS43542 Share of IPv4 footprint per hexagon Less More
Held location over 90 days 87%
Held location over 1 year 87%
Median days between moves 160 days
Geolocation scope National How consistently this network's IPs hold their geolocation. Read relative to the network type, not as a quality score.
There are 2,256 domain names hosted across 52 IP addresses on this ASN.
Pingable IPs 20 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more
IP Address ASN Details 78.156.150.60 Ping AS43542 OptoNet Communication, spol. s.r.o. #7,759 2.71ms from Prague, CZ 78.156.143.201 Ping AS43542 OptoNet Communication, spol. s.r.o. #7,759 1.87ms from Prague, CZ 78.156.156.251 Ping AS43542 OptoNet Communication, spol. s.r.o. #7,759 1.88ms from Prague, CZ 78.156.159.246 Ping AS43542 OptoNet Communication, spol. s.r.o. #7,759 1.84ms from Prague, CZ 78.156.157.73 Ping AS43542 OptoNet Communication, spol. s.r.o. #7,759 1.83ms from Prague, CZ 78.156.149.33 Ping AS43542 OptoNet Communication, spol. s.r.o. #7,759 2.01ms from Prague, CZ 78.156.135.41 Ping AS43542 OptoNet Communication, spol. s.r.o. #7,759 1.88ms from Prague, CZ 78.156.147.225 Ping AS43542 OptoNet Communication, spol. s.r.o. #7,759 2.00ms from Prague, CZ 78.156.137.105 Ping AS43542 OptoNet Communication, spol. s.r.o. #7,759 1.85ms from Prague, CZ 2a00:d940:0:b::3 Ping AS43542 OptoNet Communication, spol. s.r.o. #7,759 1.84ms from Prague, CZ
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Activity A pronounced day/night rhythm — the signature of a consumer/eyeball network whose users sleep at night.
Places IPs in this network linked to physical places, based on their Wi-Fi networks.
Places IPs 9 2 1 1 Category In AS43542 Example IP
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There are 34 peers for this ASN.
Times shown in Czechia local time (UTC+1). Less More
Peak hour 11:00–12:00
Active hours 19 hrs
Weekend vs weekday weekdays heavier
Busiest day Wed
Network type Consumer ISP
Geography Czechia New IPinfo Places identifies hotels, airports, stadiums, and more with building-level precision.
Explore Places AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH #719
AS6663 Euroweb Romania S.R.L. #551
AS6855 Slovak Telekom, a.s. #339
AS6939 Hurricane Electric LLC #18
AS8218 Zayo Infrastructure France SA #665
AS16019 Vodafone Czech Republic a.s. #411
Business Services
Restaurant
Campground