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 (34y) +6
- Has a reverse-DNS (PTR) record +5
- Isp allocation +5
- Trust score 81 / 100
Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
Geolocation
All 16 IP addresses in 4.17.131.16/28
BGP Routing
Live BGP anomalies →Not announced as an exact prefix — covered by the announced supernet 4.0.0.0/10.
RIR Ownership History
Atom feed ⇲Allocation changes captured from regional internet registry (RIR) delegation files, re-imported every six hours.
| Date | Event | From | To |
|---|---|---|---|
| 2026-05-10 | New Allocation | — | US |
Frequently Asked Questions
What is 4.17.131.16/28?
4.17.131.16/28 is a CIDR network block containing 16 IPv4 addresses (from 4.17.131.16 to 4.17.131.31). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 4.17.131.16/28 network?
The 4.17.131.16/28 range is allocated to Level 3 Parent, LLC and announced via AS3356 from United States.
How many IP addresses are in 4.17.131.16/28?
4.17.131.16/28 contains exactly 16 usable IPv4 addresses. A /28 prefix length means 16 addresses are covered by this single routing entry.
