31.204.88.100
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
- Forward-confirmed reverse DNS (FCrDNS) +10
- Long-established allocation (15y) +6
- Not on any threat blocklist +5
- Isp allocation +5
- Trust score 91 / 100
Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
DNS records
- Reverse DNS (PTR)
- static-31-204-88-100.telindustelecom.lu
- Forward-confirmed (FCrDNS)
- ✓ Confirmed
- PTR TTL
- 10800 s
- Reverse DNS last checked
- 2026-10-02 04:57 UTC
- Forward DNS last checked
- 2026-10-02 04:57 UTC
Forward DNS records for static-31-204-88-100.telindustelecom.lu
| Type | Value | Priority | TTL |
|---|---|---|---|
| A | 31.204.88.100 | — | 3600s |
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.
- static-31-204-88-100.telindustelecom.lu stable — Jun 13, 2026 → present 1 brief no-PTR dropout
Network Allocation for 31.204.88.100
- CIDR range
- 31.204.88.0/25
- IP range (int)
- 533,485,568 — 533,485,695
- Prefix length
- /25
- Organization
- Proximus Luxembourg S.A.
- ASN
- AS56665
- ASN name
- Proximus Luxembourg S.A.
- Location
- Itzig, Luxembourg, Luxembourg
- Coordinates
- 49.587800, 6.163300
- Accuracy radius
- 5 km
- Postal code
- L-5969
- Regional Internet Registry
- RIPE
- Allocated
- 2011-05-02
- Data source(s)
- ipinfo_lite, maxmind_asn, maxmind_city, maxmind_country
- Last updated
- 2026-09-30 08:40:36
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 31.204.88.100?
31.204.88.100 is allocated to Proximus Luxembourg S.A. (AS56665), registered in Itzig, Luxembourg.
Where is 31.204.88.100 located?
The geolocation for 31.204.88.100 maps to Itzig, Luxembourg 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 31.204.88.100 on?
31.204.88.100 belongs to the 31.204.88.0/25 network block announced by AS56665. This range contains 128 addresses.
Does 31.204.88.100 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.
