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CIDR
/21 · 2.0K IPs
ASN
European Organization for Nuclear Research
Reverse DNS
alaayoun-2.dyndns.cern.ch
Last scanned 13 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 v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

DNS records

Reverse DNS (PTR)
alaayoun-2.dyndns.cern.ch
Forward-confirmed (FCrDNS)
✗ Mismatch
PTR TTL
60 s
Reverse DNS last checked
2026-07-23 17:29 UTC
Forward DNS last checked
2026-07-23 17:29 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.

Network Allocation for 194.12.176.138

CIDR range
194.12.176.0/21
IP range (int)
3,255,611,392 — 3,255,613,439
Prefix length
/21
Organization
European Organization for Nuclear Research
ASN
AS513
ASN name
European Organization for Nuclear Research
Location
Vernier, Geneva, Switzerland
Coordinates
47.144900, 8.155100
Accuracy radius
100 km
Postal code
1214
Regional Internet Registry
RIPE
Allocated
1995-03-14
Data source(s)
ipinfo_lite, maxmind_city, maxmind_asn, maxmind_country
Last updated
2026-07-21 04:29:57

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

Announced prefix
Origin AS
Announcement samples
10,742
Last seen
2026-07-24 06:34:49

Frequently Asked Questions

Who owns 194.12.176.138?

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

Where is 194.12.176.138 located?

The geolocation for 194.12.176.138 maps to Vernier, 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 194.12.176.138 on?

194.12.176.138 belongs to the 194.12.176.0/21 network block announced by AS513. This range contains 2,048 addresses.

Does 194.12.176.138 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: 2026-07-24 06:45:01 UTC
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