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 (24y) +6
- Trust score 71 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Geolocation
All 2 IP addresses in 81.91.170.90/31
BGP Routing
Live BGP anomalies →Not announced as an exact prefix — covered by the announced supernet 81.91.170.0/24.
Frequently Asked Questions
What is 81.91.170.90/31?
81.91.170.90/31 is a CIDR network block containing 2 IPv4 addresses (from 81.91.170.90 to 81.91.170.91). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 81.91.170.90/31 network?
The 81.91.170.90/31 range is allocated to DENIC eG and announced via AS8763 from Germany.
How many IP addresses are in 81.91.170.90/31?
81.91.170.90/31 contains exactly 2 usable IPv4 addresses. A /31 prefix length means 2 addresses are covered by this single routing entry.
