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.
- Baseline (neutral) 65
- Long-established allocation (21y) +6
- Not on any threat blocklist +5
- Has a reverse-DNS (PTR) record +5
- Enterprise allocation +4
- Trust score 85 / 100
Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
DNS records
- Reverse DNS (PTR)
- mail.listgrp.com
- Forward-confirmed (FCrDNS)
- Not checked
- PTR TTL
- 21600 s
- Reverse DNS last checked
- 2026-10-10 09:03 UTC
- Forward DNS last checked
- 2026-10-10 06:10 UTC
Forward DNS records for mail.listgrp.com
| Type | Value | Priority | TTL |
|---|---|---|---|
| A | 87.102.255.250 | — | 300s |
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 UTC0
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.
- mail.listgrp.com — Oct 10, 2026 → present
- mail.list.ch — Oct 9, 2026 → Oct 10, 2026
- mail.listgrp.com — Oct 8, 2026 → Oct 9, 2026
- mail.list.ch — Oct 7, 2026 → Oct 8, 2026
- mail.listgrp.com — Oct 6, 2026 → Oct 7, 2026
- mail.list.ch — Oct 5, 2026 → Oct 6, 2026
- mail.listgrp.com — Oct 3, 2026 → Oct 5, 2026
- mail.list.ch — Oct 2, 2026 → Oct 3, 2026
- mail.listgrp.com — Oct 1, 2026 → Oct 2, 2026
- mail.list.ch — Sep 30, 2026 → Oct 1, 2026
- mail.listgrp.com — Sep 30, 2026 → Sep 30, 2026
- mail.list.ch — Sep 29, 2026 → Sep 30, 2026
- mail.listgrp.com — Sep 27, 2026 → Sep 29, 2026
- mail.list.ch — Sep 26, 2026 → Sep 27, 2026
- mail.listgrp.com — Sep 25, 2026 → Sep 26, 2026
- mail.list.ch — Aug 23, 2026 → Sep 25, 2026
- mail.listgrp.com — Aug 18, 2026 → Aug 23, 2026
- mail.list.ch — Jun 30, 2026 → Aug 18, 2026
- mail.listgrp.com — Jun 12, 2026 → Jun 30, 2026
Network Allocation for 87.102.255.250
- CIDR range
- 87.102.254.0/23
- IP range (int)
- 1,466,367,488 — 1,466,367,999
- Prefix length
- /23
- Organization
- ImproWare AG
- ASN
- AS6772
- ASN name
- ImproWare AG
- Location
- Dornach, Solothurn, Switzerland
- Coordinates
- 47.474500, 7.613700
- Accuracy radius
- 5 km
- Postal code
- 4143
- Regional Internet Registry
- RIPE
- Allocated
- 2005-10-19
- Data source(s)
- maxmind_city, maxmind_country, maxmind_asn, ipinfo_lite
- Last updated
- 2026-10-09 05:23:33
BGP Routing
Live BGP anomalies →Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.
Frequently Asked Questions
Who owns 87.102.255.250?
87.102.255.250 is allocated to ImproWare AG (AS6772), registered in Dornach, Switzerland.
Where is 87.102.255.250 located?
The geolocation for 87.102.255.250 maps to Dornach, Switzerland 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 87.102.255.250 on?
87.102.255.250 belongs to the 87.102.254.0/23 network block announced by AS6772. This range contains 512 addresses.
Does 87.102.255.250 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.
