Addresses
32,768
32.8K
Sub-ranges
13+
within this block
PTR Density
68.3%
22.4K of 32.8K IPs have PTR
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.
64/100
Moderate
How this score is built
- Baseline (neutral) 65
- Hosting allocation −6
- Has a reverse-DNS (PTR) record +5
- Trust score 64 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Ranges inside 15.204.0.0/17
| CIDR | IPs | Organization | ASN | Country |
|---|---|---|---|---|
| 15.204.64.0/18 | 16.4K | OVH SAS | AS16276 | US |
| 15.204.32.0/19 | 8.2K | OVH SAS | AS16276 | US |
| 15.204.16.0/20 | 4.1K | OVH SAS | AS16276 | US |
| 15.204.8.0/21 | 2.0K | OVH SAS | AS16276 | US |
| 15.204.4.0/22 | 1.0K | OVH SAS | AS16276 | US |
| 15.204.2.0/23 | 512 | OVH SAS | AS16276 | US |
| 15.204.1.0/24 | 256 | OVH SAS | AS16276 | US |
| 15.204.0.0/25 | 128 | OVH SAS | AS16276 | US |
| 15.204.0.192/26 | 64 | OVH SAS | AS16276 | US |
| 15.204.0.160/27 | 32 | OVH SAS | AS16276 | US |
| 15.204.0.128/28 | 16 | OVH SAS | AS16276 | US |
| 15.204.0.152/29 | 8 | OVH SAS | AS16276 | US |
| 15.204.0.144/29 | 8 | OVH SAS | AS16276 | US |
First 256 of 32,768 IP addresses in 15.204.0.0/17
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+ 32.5K more (range too large to list inline)
BGP Routing
Live BGP anomalies →This block is announced in BGP, observed across our RIPE RIS collectors.
Announced prefix
Origin AS
Announcement samples
24,259
Last seen
2026-07-18 11:39:35
Frequently Asked Questions
What is 15.204.0.0/17?
15.204.0.0/17 is a CIDR network block containing 32,768 IPv4 addresses (from 15.204.0.0 to 15.204.127.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 15.204.0.0/17 network?
The 15.204.0.0/17 range is allocated to OVH SAS and announced via AS16276 from United States.
Last updated: 2026-07-18 11:40:32 UTC
