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CIDR
/22 · 1.0K IPs
ASN
Seoul Metropolitan Government
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.

76/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network Allocation for 203.128.237.253

CIDR range
203.128.236.0/22
IP range (int)
3,414,223,872 — 3,414,224,895
Prefix length
/22
Organization
Seoul Metropolitan Government
ASN
AS9647
ASN name
Seoul Metropolitan Government
Location
South Korea
Coordinates
37.511200, 126.974100
Accuracy radius
200 km
Regional Internet Registry
APNIC
Allocated
2008-03-06
Data source(s)
maxmind_city, maxmind_asn, maxmind_country, ipinfo_lite
Last updated
2026-06-09 06:07:04

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

Announced prefix
Origin AS
Announcement samples
6,568
Last seen
2026-07-24 03:43:12

Frequently Asked Questions

Who owns 203.128.237.253?

203.128.237.253 is allocated to Seoul Metropolitan Government (AS9647), registered in South Korea.

Where is 203.128.237.253 located?

The geolocation for 203.128.237.253 maps to South Korea 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 203.128.237.253 on?

203.128.237.253 belongs to the 203.128.236.0/22 network block announced by AS9647. This range contains 1,024 addresses.

Does 203.128.237.253 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 03:59:36 UTC
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