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CIDR
/23 · 512 IPs
ASN
LLC Svyazenergo
Reverse DNS
mail1.m12systems.ru
Last scanned 12 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 v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →

DNS records

Reverse DNS (PTR)
mail1.m12systems.ru
Forward-confirmed (FCrDNS)
✗ Mismatch
PTR TTL
21600 s
Reverse DNS last checked
2026-10-04 18:58 UTC
Forward DNS last checked
2026-10-04 18:58 UTC
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.

Domains hosted

as of 2026-10-04 UTC

0

issued.live saw no domain resolving to this IP in its latest weekly snapshot.

Domain data provided by issued.live — for full details visit https://issued.live/pricing

Reverse DNS history

How this IP's reverse DNS (PTR) has changed over time, from our scans.

This IP's reverse DNS changes frequently — the timeline below shows the most recent changes.

  1. mail1.m12systems.ru — Oct 4, 2026 → present
  2. sr-m12-003.m12systems.ru — Oct 2, 2026 → Oct 4, 2026
  3. mail1.m12systems.ru — Sep 27, 2026 → Oct 2, 2026
  4. sr-m12-003.m12systems.ru — Sep 25, 2026 → Sep 27, 2026
  5. mail1.m12systems.ru — Aug 24, 2026 → Sep 25, 2026
  6. sr-m12-003.m12systems.ru — Jun 12, 2026 → Aug 24, 2026

Network Allocation for 91.211.182.155

CIDR range
91.211.182.0/23
IP range (int)
1,540,601,344 — 1,540,601,855
Prefix length
/23
Organization
LLC Svyazenergo
ASN
AS197535
ASN name
LLC Svyazenergo
Location
Russia
Coordinates
55.738600, 37.606800
Accuracy radius
1000 km
Regional Internet Registry
RIPE
Allocated
2008-12-29
Data source(s)
maxmind_asn, ipinfo_lite, maxmind_city, maxmind_country
Last updated
2026-09-29 18:51:43

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

Announced prefix
Origin AS
Announcement samples
16,503
Last seen
2026-10-05 04:30:52

Frequently Asked Questions

Who owns 91.211.182.155?

91.211.182.155 is allocated to LLC Svyazenergo (AS197535), registered in Russia.

Where is 91.211.182.155 located?

The geolocation for 91.211.182.155 maps to 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 91.211.182.155 on?

91.211.182.155 belongs to the 91.211.182.0/23 network block announced by AS197535. This range contains 512 addresses.

Does 91.211.182.155 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: 2026-10-05 05:52:06 UTC
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