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 (15y) +6
- Has a reverse-DNS (PTR) record +5
- Enterprise allocation +4
- Trust score 80 / 100
Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →
Ranges inside 171.251.0.0/17
| CIDR | IPs | Organization | ASN | Country |
|---|---|---|---|---|
| 171.251.96.0/19 | 8.2K | Viettel Group | AS7552 | VN |
| 171.251.32.0/19 | 8.2K | Viettel Group | AS7552 | VN |
| 171.251.0.0/20 | 4.1K | Viettel Group | AS7552 | VN |
| 171.251.64.0/20 | 4.1K | Viettel Group | AS7552 | VN |
| 171.251.16.0/20 | 4.1K | Viettel Group | AS7552 | VN |
| 171.251.80.0/21 | 2.0K | Viettel Group | AS7552 | VN |
| 171.251.92.0/22 | 1.0K | Viettel Group | AS7552 | VN |
| 171.251.88.0/23 | 512 | Viettel Group | AS7552 | VN |
| 171.251.90.0/24 | 256 | Viettel Group | AS7552 | VN |
| 171.251.91.0/24 | 256 | Viettel Group | AS7552 | VN |
First and last addresses in 171.251.0.0/17
171.251.0.0/17 runs from 171.251.0.0 to 171.251.127.255.
BGP Routing
Live BGP anomalies →Not announced as an exact prefix — covered by the announced supernet 171.248.0.0/14.
Frequently Asked Questions
What is 171.251.0.0/17?
171.251.0.0/17 is a CIDR network block containing 32,768 IPv4 addresses (from 171.251.0.0 to 171.251.127.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 171.251.0.0/17 network?
The 171.251.0.0/17 range is allocated to Viettel Group and announced via AS7552 from Vietnam.
