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
- Has a reverse-DNS (PTR) record +5
- Enterprise allocation +4
- Established allocation (14y) +3
- Trust score 77 / 100
Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →
Ranges inside 172.217.128.0/19
Geolocation
First and last addresses in 172.217.128.0/19
172.217.128.0/19 runs from 172.217.128.0 to 172.217.159.255.
BGP Routing
Live BGP anomalies →This block is announced in BGP, observed across our RIPE RIS collectors.
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 172.217.128.0/19?
172.217.128.0/19 is a CIDR network block containing 8,192 IPv4 addresses (from 172.217.128.0 to 172.217.159.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 172.217.128.0/19 network?
The 172.217.128.0/19 range is allocated to Google, LLC and announced via AS15169 from United States.
