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CIDR
/21 · 2.0K IPs
ASN
Online Computer Library Center
Reverse DNS
stmarys-ca.illiad.oclc.org
Last scanned 22 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)
stmarys-ca.illiad.oclc.org
Forward-confirmed (FCrDNS)
Not checked
PTR TTL
3600 s
Reverse DNS last checked
2026-09-13 00:56 UTC

Forward DNS records for stmarys-ca.illiad.oclc.org

TypeValuePriorityTTL
A 206.107.42.125 300s
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 206.107.42.125

CIDR range
206.107.40.0/21
IP range (int)
3,463,129,088 — 3,463,131,135
Prefix length
/21
Organization
Online Computer Library Center
ASN
AS4373
ASN name
Online Computer Library Center
Location
Dublin, Ohio, United States
Coordinates
40.110400, -83.113100
Accuracy radius
20 km
Postal code
43017
Regional Internet Registry
ARIN
Allocated
1995-08-15
Data source(s)
maxmind_city, maxmind_asn, ipinfo_lite, maxmind_country
Last updated
2026-09-13 05:30:52

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

Announced prefix
Origin AS
Announcement samples
14,779
Last seen
2026-09-13 22:54:26

RIR Ownership History

Atom feed ⇲

Allocation changes captured weekly from regional internet registry (RIR) delegation files for ranges that have contained this IP.

Date Event From To
2026-05-10 New Allocation US

See the full history for 206.107.0.0/17.

Frequently Asked Questions

Who owns 206.107.42.125?

206.107.42.125 is allocated to Online Computer Library Center (AS4373), registered in Dublin, United States.

Where is 206.107.42.125 located?

The geolocation for 206.107.42.125 maps to Dublin, United States 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 206.107.42.125 on?

206.107.42.125 belongs to the 206.107.40.0/21 network block announced by AS4373. This range contains 2,048 addresses.

Does 206.107.42.125 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: 2026-09-13 23:10:22 UTC
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