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CIDR
/17 · 32.8K IPs
ASN
Taiwan Academic Network (TANet) Information Center
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 203.64.54.91

CIDR range
203.64.0.0/17
IP range (int)
3,409,969,152 — 3,410,001,919
Prefix length
/17
Organization
Taiwan Academic Network TANet Information Center
ASN
AS1659
ASN name
Taiwan Academic Network (TANet) Information Center
Location
Hualien City, Hualien County, Taiwan
Coordinates
23.980700, 121.611500
Accuracy radius
50 km
Regional Internet Registry
APNIC
Allocated
1994-12-14
Data source(s)
maxmind_city, maxmind_asn, maxmind_country, ipinfo_lite
Last updated
2026-07-08 18:21:36

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

Announced prefix
Origin AS
Announcement samples
7
Last seen
2026-07-14 22:15:37

Frequently Asked Questions

Who owns 203.64.54.91?

203.64.54.91 is allocated to Taiwan Academic Network TANet Information Center (AS1659), registered in Hualien City, Taiwan.

Where is 203.64.54.91 located?

The geolocation for 203.64.54.91 maps to Hualien City, Taiwan 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 203.64.54.91 on?

203.64.54.91 belongs to the 203.64.0.0/17 network block announced by AS1659. This range contains 32,768 addresses.

Does 203.64.54.91 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 03:00:52 UTC
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