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CIDR
/20 · 4.1K IPs
ASN
European Organization for Nuclear Research
Reverse DNS
azok-1.dyndns.cern.ch
last known PTR from 3 hr ago
Blocklisted
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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 →

Domains hosted

as of 2026-10-11 UTC

0

issued.live saw no domain resolving to this IP in its latest weekly snapshot.

Domain data provided by issued.live — for full details visit https://issued.live/pricing

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 Oct 14, 2026 and Oct 15, 2026 were not recorded; the current PTR is shown from its earliest retained observation.

  1. no PTR — since at least Oct 15, 2026 → present
  2. azok-1.dyndns.cern.ch — Oct 14, 2026 → Oct 15, 2026
  3. no PTR — Oct 14, 2026 → Oct 14, 2026
  4. ntoboul-1.dyndns.cern.ch — Oct 12, 2026 → Oct 14, 2026
  5. no PTR — Oct 11, 2026 → Oct 12, 2026
  6. rcharous-4.dyndns.cern.ch — Oct 8, 2026 → Oct 11, 2026
  7. no PTR — Oct 6, 2026 → Oct 8, 2026
  8. muhameed-2.dyndns.cern.ch — Oct 5, 2026 → Oct 6, 2026
  9. no PTR — Oct 2, 2026 → Oct 5, 2026
  10. azok-1.dyndns.cern.ch — Sep 29, 2026 → Oct 2, 2026
  11. no PTR — Sep 28, 2026 → Sep 29, 2026
  12. pctilpmt1.dyndns.cern.ch — Sep 26, 2026 → Sep 28, 2026
  13. no PTR — Aug 24, 2026 → Sep 26, 2026
  14. sam-cs.dyndns.cern.ch — Aug 18, 2026 → Aug 24, 2026

Network Allocation for 194.12.142.191

CIDR range
194.12.128.0/20
IP range (int)
3,255,599,104 — 3,255,603,199
Prefix length
/20
Organization
European Organization for Nuclear Research
ASN
AS513
ASN name
European Organization for Nuclear Research
Location
Switzerland
Coordinates
47.144900, 8.155100
Accuracy radius
100 km
Regional Internet Registry
RIPE
Allocated
1995-03-14
Data source(s)
maxmind_city, ipinfo_lite, maxmind_country, maxmind_asn
Last updated
2026-10-15 08:49:58

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

Announced prefix
Origin AS
Announcement samples
51,032
Last seen
2026-10-15 22:51:53

Frequently Asked Questions

Who owns 194.12.142.191?

194.12.142.191 is allocated to European Organization for Nuclear Research (AS513), registered in Switzerland.

Where is 194.12.142.191 located?

The geolocation for 194.12.142.191 maps to Switzerland 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 194.12.142.191 on?

194.12.142.191 belongs to the 194.12.128.0/20 network block announced by AS513. This range contains 4,096 addresses.

Does 194.12.142.191 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: 2026-10-15 12:22:35 UTC
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