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CIDR
/23 · 512 IPs
ASN
Esmero Holding B.V.
Reverse DNS
srv1.jera-ict.nl
last known PTR from 94 days 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.

80/100
Trusted
How this score is built

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

DNS records

Reverse DNS (PTR)
srv1.jera-ict.nl
Forward-confirmed (FCrDNS)
✓ Confirmed
PTR TTL
86400 s
Reverse DNS last checked
2026-09-26 16:00 UTC
Forward DNS last checked
2026-09-26 16:00 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.

Reverse DNS history

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

  1. no PTR — Jun 24, 2026 → present
  2. web02.downloadserver.be stable — Jun 12, 2026 → Jun 24, 2026

Network Allocation for 91.198.171.129

CIDR range
91.198.170.0/23
IP range (int)
1,539,746,304 — 1,539,746,815
Prefix length
/23
Organization
Esmero Holding B.V.
ASN
AS207829
ASN name
Esmero Holding B.V.
Location
The Netherlands
Coordinates
52.382400, 4.899500
Accuracy radius
100 km
Regional Internet Registry
RIPE
Allocated
2019-10-03
Data source(s)
maxmind_city, maxmind_country, maxmind_asn, ipinfo_lite
Last updated
2026-07-09 06:20:56

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

Announced prefix
Origin AS
Announcement samples
9,985
Last seen
2026-09-26 18:04:27

Frequently Asked Questions

Who owns 91.198.171.129?

91.198.171.129 is allocated to Esmero Holding B.V. (AS207829), registered in The Netherlands.

Where is 91.198.171.129 located?

The geolocation for 91.198.171.129 maps to The Netherlands 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 91.198.171.129 on?

91.198.171.129 belongs to the 91.198.170.0/23 network block announced by AS207829. This range contains 512 addresses.

Does 91.198.171.129 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: 2026-09-26 16:52:17 UTC
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