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CIDR
/20 · 4.1K IPs
ASN
Non state educational institution Educational Scientific and Experimental Center of Moscow I
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 81.5.64.106

CIDR range
81.5.64.0/20
IP range (int)
1,359,298,560 — 1,359,302,655
Prefix length
/20
Organization
Non state educational institution Educational Scientific and Experimental Center of Moscow I
ASN
AS25100
ASN name
Non state educational institution Educational Scientific and Experimental Center of Moscow I
Location
Mytishchi, Moscow Oblast, Russia
Coordinates
55.902700, 37.734700
Accuracy radius
10 km
Postal code
141009
Regional Internet Registry
RIPE
Allocated
2002-05-22
Data source(s)
maxmind_city, maxmind_country, maxmind_asn, ipinfo_lite
Last updated
2026-07-11 00:20:09

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

Announced prefix
Origin AS
Announcement samples
20,205
Last seen
2026-07-30 14:28:24

Frequently Asked Questions

Who owns 81.5.64.106?

81.5.64.106 is allocated to Non state educational institution Educational Scientific and Experimental Center of Moscow I (AS25100), registered in Mytishchi, Russia.

Where is 81.5.64.106 located?

The geolocation for 81.5.64.106 maps to Mytishchi, Russia 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 81.5.64.106 on?

81.5.64.106 belongs to the 81.5.64.0/20 network block announced by AS25100. This range contains 4,096 addresses.

Does 81.5.64.106 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: 2026-07-30 14:40:03 UTC
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