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
- Established allocation (14y) +3
- Trust score 68 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Ranges inside 100.199.0.0/16
| CIDR | IPs | Organization | ASN | Country |
|---|---|---|---|---|
| 100.199.128.0/17 | 32.8K | T-Mobile USA, Inc. | AS21928 | US |
| 100.199.64.0/18 | 16.4K | T-Mobile USA, Inc. | AS21928 | US |
| 100.199.32.0/19 | 8.2K | T-Mobile USA, Inc. | AS21928 | US |
| 100.199.16.0/20 | 4.1K | T-Mobile USA, Inc. | AS21928 | US |
| 100.199.8.0/21 | 2.0K | T-Mobile USA, Inc. | AS21928 | US |
| 100.199.4.0/22 | 1.0K | T-Mobile USA, Inc. | AS21928 | US |
| 100.199.2.0/23 | 512 | T-Mobile USA, Inc. | AS21928 | US |
| 100.199.1.0/24 | 256 | T-Mobile USA, Inc. | AS21928 | US |
| 100.199.0.128/25 | 128 | T-Mobile USA, Inc. | AS21928 | US |
| 100.199.0.0/25 | 128 | T-Mobile USA, Inc. | AS21928 | CN |
Geolocation
First 256 of 65,536 IP addresses in 100.199.0.0/16
BGP Routing
Live BGP anomalies →Not announced as an exact prefix — covered by the announced supernet 100.128.0.0/9.
Frequently Asked Questions
What is 100.199.0.0/16?
100.199.0.0/16 is a CIDR network block containing 65,536 IPv4 addresses (from 100.199.0.0 to 100.199.255.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 100.199.0.0/16 network?
The 100.199.0.0/16 range is allocated to T-Mobile USA, Inc. and announced via AS21928 from United States.