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 (37y) +6
- Enterprise allocation +4
- Trust score 75 / 100
Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →
Ranges inside 137.31.220.0/22
| CIDR | IPs | Organization | ASN | Country |
|---|---|---|---|---|
| 137.31.220.0/23 | 512 | ZSCALER, INC. | AS22616 | BR |
| 137.31.220.0/23 | 512 | ZSCALER, INC. | AS22616 | CH |
| 137.31.220.0/23 | 512 | ZSCALER, INC. | AS22616 | BR |
| 137.31.222.0/23 | 512 | ZSCALER, INC. | AS22616 | US |
| 137.31.222.0/23 | 512 | ZSCALER, INC. | AS22616 | US |
| 137.31.222.0/24 | 256 | ZSCALER, INC. | AS22616 | CH |
| 137.31.223.0/24 | 256 | ZSCALER, INC. | AS22616 | CH |
First and last addresses in 137.31.220.0/22
137.31.220.0/22 runs from 137.31.220.0 to 137.31.223.255.
BGP Routing
Live BGP anomalies →Not announced as an exact prefix — covered by the announced supernet 137.31.0.0/16.
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 | — | CH |
Frequently Asked Questions
What is 137.31.220.0/22?
137.31.220.0/22 is a CIDR network block containing 1,024 IPv4 addresses (from 137.31.220.0 to 137.31.223.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 137.31.220.0/22 network?
The 137.31.220.0/22 range is allocated to ZSCALER, INC. and announced via AS22616 from Switzerland.
