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CIDR
/21 · 2.0K IPs
ASN
ACTIVE 24, s.r.o.
Reverse DNS
unassigned-31.15.13.68.active24.cz
Last scanned 20 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)
unassigned-31.15.13.68.active24.cz
Forward-confirmed (FCrDNS)
Not checked
PTR TTL
86400 s
Reverse DNS last checked
2026-09-24 19:12 UTC
Forward DNS last checked
2026-09-24 14:28 UTC
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.

  1. unassigned-31.15.13.68.active24.cz stable — Jun 25, 2026 → present
  2. uvds510.active24.cz stable — Jun 11, 2026 → Jun 25, 2026

Network Allocation for 31.15.13.68

CIDR range
31.15.8.0/21
IP range (int)
521,078,784 — 521,080,831
Prefix length
/21
Organization
ACTIVE 24, s.r.o.
ASN
AS25234
ASN name
ACTIVE 24, s.r.o.
Location
Czechia
Coordinates
50.084800, 14.411200
Accuracy radius
100 km
Regional Internet Registry
RIPE
Allocated
2011-04-20
Data source(s)
maxmind_city, maxmind_country, maxmind_asn, ipinfo_lite
Last updated
2026-07-11 00:19:58

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

Announced prefix
Origin AS
Announcement samples
40,860
Last seen
2026-09-24 22:04:55

Frequently Asked Questions

Who owns 31.15.13.68?

31.15.13.68 is allocated to ACTIVE 24, s.r.o. (AS25234), registered in Czechia.

Where is 31.15.13.68 located?

The geolocation for 31.15.13.68 maps to 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 31.15.13.68 on?

31.15.13.68 belongs to the 31.15.8.0/21 network block announced by AS25234. This range contains 2,048 addresses.

Does 31.15.13.68 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: 2026-09-24 05:37:29 UTC
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