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CIDR
/20 · 4.1K IPs
ASN
COLT Technology Services Group Limited
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.

80/100
Trusted
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Network Allocation for 157.2.52.60

CIDR range
157.2.48.0/20
IP range (int)
2,634,166,272 — 2,634,170,367
Prefix length
/20
Organization
COLT Technology Services Group Limited
ASN
AS8220
ASN name
COLT Technology Services Group Limited
Location
Japan
Coordinates
35.690000, 139.690000
Accuracy radius
500 km
Regional Internet Registry
ARIN
Allocated
1992-09-02
Data source(s)
maxmind_asn, ipinfo_lite, maxmind_city, maxmind_country
Last updated
2026-06-09 06:05:32

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

Announced prefix
Origin AS
Announcement samples
4,555
Last seen
2026-07-20 15:20:44

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 JP

See the full history for 157.2.0.0/15.

Frequently Asked Questions

Who owns 157.2.52.60?

157.2.52.60 is allocated to COLT Technology Services Group Limited (AS8220), registered in Japan.

Where is 157.2.52.60 located?

The geolocation for 157.2.52.60 maps to Japan 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 157.2.52.60 on?

157.2.52.60 belongs to the 157.2.48.0/20 network block announced by AS8220. This range contains 4,096 addresses.

Does 157.2.52.60 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.

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