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 (20y) +6
- Trust score 71 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Geolocation
All 128 IP addresses in 121.83.198.0/25
BGP Routing
Live BGP anomalies →Not announced as an exact prefix — covered by the announced supernet 121.80.0.0/14.
RIR Ownership History
Atom feed ⇲Allocation changes captured weekly from regional internet registry (RIR) delegation files.
| Date | Event | From | To |
|---|---|---|---|
| 2026-05-10 | New Allocation | — | JP |
Frequently Asked Questions
What is 121.83.198.0/25?
121.83.198.0/25 is a CIDR network block containing 128 IPv4 addresses (from 121.83.198.0 to 121.83.198.127). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 121.83.198.0/25 network?
The 121.83.198.0/25 range is allocated to OPTAGE Inc. and announced via AS17511 from Japan.
How many IP addresses are in 121.83.198.0/25?
121.83.198.0/25 contains exactly 128 usable IPv4 addresses. A /25 prefix length means 128 addresses are covered by this single routing entry.
