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CIDR
/20 · 4.1K IPs
ASN
O2 Czech Republic, a.s.
Reverse DNS
trialmanager.remak.cz
Last scanned 11 hr ago
Blocklisted
Checking…
Scanning blocklists

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

85/100
Trusted
How this score is built

Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →

DNS records

Reverse DNS (PTR)
trialmanager.remak.cz
Forward-confirmed (FCrDNS)
Not checked
PTR TTL
86400 s
Reverse DNS last checked
2026-10-02 06:24 UTC
Forward DNS last checked
2026-10-02 06:24 UTC

Forward DNS records for trialmanager.remak.cz

TypeValuePriorityTTL
A 37.9.175.163 — 172800s
every IP & sub-domain we've seen under this domain

Reverse & forward DNS collected by the WorldIP scanner fleet — FCrDNS confirms the PTR hostname resolves back to this IP.

Reverse DNS history

How this IP's reverse DNS (PTR) has changed over time, from our scans.

This IP's reverse DNS changes frequently — the timeline below shows the most recent changes.

Reverse-DNS changes between Sep 30, 2026 and Oct 2, 2026 were not recorded; the current PTR is shown from its earliest retained observation.

  1. trialmanager.remak.cz — since at least Oct 2, 2026 → present
  2. acportal.remak.cz — Sep 30, 2026 → Oct 2, 2026
  3. devicemanager.remak.cz — Sep 30, 2026 → Sep 30, 2026
  4. portal.remak.cz — Sep 29, 2026 → Sep 30, 2026
  5. acportal.remak.cz — Sep 28, 2026 → Sep 29, 2026
  6. devicemanager.remak.cz — Sep 27, 2026 → Sep 28, 2026
  7. portal.remak.cz — Sep 26, 2026 → Sep 27, 2026
  8. acportal.remak.cz — Sep 25, 2026 → Sep 26, 2026
  9. devicemanager.remak.cz — Sep 25, 2026 → Sep 25, 2026
  10. portal.remak.cz — Aug 25, 2026 → Sep 25, 2026
  11. acportal.remak.cz — Aug 24, 2026 → Aug 25, 2026
  12. trialmanager.remak.cz — Aug 18, 2026 → Aug 24, 2026
  13. devicemanager.remak.cz — Aug 18, 2026 → Aug 18, 2026
  14. gw2.remak.cz — Jul 5, 2026 → Aug 18, 2026
  15. trialmanager.remak.cz — Jul 2, 2026 → Jul 5, 2026
  16. gw2.remak.cz — Jul 2, 2026 → Jul 2, 2026
  17. acportal.remak.cz — Jun 29, 2026 → Jul 2, 2026
  18. trialmanager.remak.cz — Jun 29, 2026 → Jun 29, 2026
  19. devicemanager.remak.cz — Jun 26, 2026 → Jun 29, 2026
  20. trialmanager.remak.cz — Jun 23, 2026 → Jun 26, 2026
  21. gw2.remak.cz — Jun 20, 2026 → Jun 23, 2026
  22. trialmanager.remak.cz — Jun 16, 2026 → Jun 20, 2026
  23. devicemanager.remak.cz — Jun 15, 2026 → Jun 16, 2026
  24. trialmanager.remak.cz — Jun 11, 2026 → Jun 15, 2026
  25. acportal.remak.cz — Jun 3, 2026 → Jun 11, 2026
  26. portal.remak.cz — Jun 3, 2026 → Jun 3, 2026
  27. acportal.remak.cz — Jun 3, 2026 → Jun 3, 2026
  28. trialmanager.remak.cz — Jun 3, 2026 → Jun 3, 2026
  29. gw2.remak.cz — Jun 3, 2026 → Jun 3, 2026
  30. devicemanager.remak.cz — Jun 3, 2026 → Jun 3, 2026
  31. trialmanager.remak.cz — Jun 3, 2026 → Jun 3, 2026

Network Allocation for 80.188.3.166

CIDR range
80.188.0.0/20
IP range (int)
1,354,498,048 — 1,354,502,143
Prefix length
/20
Organization
O2 Czech Republic, a.s.
ASN
AS5610
ASN name
O2 Czech Republic, a.s.
Location
Prague, Prague, Czechia
Coordinates
50.111300, 14.406300
Accuracy radius
20 km
Postal code
170 00
Regional Internet Registry
RIPE
Allocated
2002-06-13
Data source(s)
maxmind_city, maxmind_country, maxmind_asn, ipinfo_lite
Last updated
2026-10-02 08:44:51

Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.

Announced prefix
Origin AS
Announcement samples
28,019
Last seen
2026-10-02 16:10:25

Frequently Asked Questions

Who owns 80.188.3.166?

80.188.3.166 is allocated to O2 Czech Republic, a.s. (AS5610), registered in Prague, Czechia.

Where is 80.188.3.166 located?

The geolocation for 80.188.3.166 maps to Prague, Czechia based on MaxMind GeoLite2 data. Accuracy depends on the provider and may represent the ISP's regional hub rather than the exact endpoint.

What network is 80.188.3.166 on?

80.188.3.166 belongs to the 80.188.0.0/20 network block announced by AS5610. This range contains 4,096 addresses.

Does 80.188.3.166 have a reverse DNS record?

Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.

Neighbors

Other addresses in the same /24.

Related

Last updated: 2026-10-02 17:47:39 UTC
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