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CIDR
/18 · 16.4K IPs
ASN
INTERNET CZ, a.s.
Reverse DNS
um.ostroda.pl
Last scanned 12 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.

81/100
Trusted
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

DNS records

Reverse DNS (PTR)
um.ostroda.pl
Forward-confirmed (FCrDNS)
Not checked
PTR TTL
3600 s
Reverse DNS last checked
2026-09-22 16:29 UTC
Forward DNS last checked
2026-09-22 16:29 UTC

Forward DNS records for um.ostroda.pl

TypeValuePriorityTTL
A 195.78.66.144 172800s
MX mail.um.ostroda.pl 10
NS ns1.cyberfolks.pl
NS ns2.cyberfolks.pl
NS ns3.cyberfolks.pl
TXT 4df43bc4098c91114ed4ac28ab139061eb1b816bdddd721ebe866a0817a966f
TXT 9bede85fdb501725ce5e96a5758afaa4b7123bef14bda6bbb640d34c0f91ba5
TXT ee9952ede01159c6cfb32c9cf39e6365face43fd50e57b05d3992f3d4995f1f
TXT fe8eab2ab094cd5954f8bba13ef7acfed4ac0a33a52999a2a80078215b35f30
TXT v=DMARC1; p=quarantine; rua=mailto:informatyk@um.ostroda.pl; sp=quarantine
TXT v=spf1 a mx include:_spf.cyberfolks.pl -all
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.

Network Allocation for 81.2.200.124

CIDR range
81.2.192.0/18
IP range (int)
1,359,134,720 — 1,359,151,103
Prefix length
/18
Organization
INTERNET CZ, a.s.
ASN
AS24806
ASN name
INTERNET CZ, a.s.
Location
Prague, Prague, Czechia
Coordinates
50.088300, 14.412400
Accuracy radius
20 km
Postal code
110 00
Regional Internet Registry
RIPE
Allocated
2002-04-04
Data source(s)
maxmind_city, maxmind_country, maxmind_asn, ipinfo_lite
Last updated
2026-09-22 04:07:28

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

Announced prefix
Origin AS
Announcement samples
9,338
Last seen
2026-09-23 04:44:35

Frequently Asked Questions

Who owns 81.2.200.124?

81.2.200.124 is allocated to INTERNET CZ, a.s. (AS24806), registered in Prague, Czechia.

Where is 81.2.200.124 located?

The geolocation for 81.2.200.124 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 81.2.200.124 on?

81.2.200.124 belongs to the 81.2.192.0/18 network block announced by AS24806. This range contains 16,384 addresses.

Does 81.2.200.124 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: 2026-09-22 17:33:09 UTC
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