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CIDR
/21 · 2.0K IPs
ASN
ha-vel internet s.r.o.
Reverse DNS
—
No PTR record
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 v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →

Network Allocation for 81.30.240.172

CIDR range
81.30.240.0/21
IP range (int)
1,360,982,016 — 1,360,984,063
Prefix length
/21
Organization
ha-vel internet s.r.o.
ASN
AS15935
ASN name
ha-vel internet s.r.o.
Location
Mělník, Central Bohemia, Czechia
Coordinates
50.350700, 14.470000
Accuracy radius
20 km
Postal code
276 01
Regional Internet Registry
RIPE
Allocated
2002-05-27
Data source(s)
maxmind_city, maxmind_country, maxmind_asn, ipinfo_lite
Last updated
2026-09-29 04:07:09

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

Announced prefix
Origin AS
Announcement samples
516,020
Last seen
2026-09-29 13:49:48

Frequently Asked Questions

Who owns 81.30.240.172?

81.30.240.172 is allocated to ha-vel internet s.r.o. (AS15935), registered in Mělník, Czechia.

Where is 81.30.240.172 located?

The geolocation for 81.30.240.172 maps to Mělník, 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 81.30.240.172 on?

81.30.240.172 belongs to the 81.30.240.0/21 network block announced by AS15935. This range contains 2,048 addresses.

Does 81.30.240.172 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: 2026-09-29 09:59:38 UTC
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