Addresses
16,384
16.4K
Sub-ranges
14+
within this block
PTR Density
49.0%
8.0K of 16.4K 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.
76/100
Moderate
How this score is built
- Baseline (neutral) 65
- Long-established allocation (29y) +6
- Has a reverse-DNS (PTR) record +5
- Trust score 76 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Ranges inside 209.175.64.0/18
| CIDR | IPs | Organization | ASN | Country |
|---|---|---|---|---|
| 209.175.96.0/19 | 8.2K | Illinois Century Network | AS6325 | US |
| 209.175.96.0/19 | 8.2K | Illinois Century Network | AS6325 | US |
| 209.175.112.0/20 | 4.1K | — | — | US |
| 209.175.96.0/20 | 4.1K | — | — | US |
| 209.175.80.0/20 | 4.1K | — | — | US |
| 209.175.80.0/20 | 4.1K | Illinois Century Network | AS6325 | US |
| 209.175.80.0/20 | 4.1K | Illinois Century Network | AS6325 | US |
| 209.175.64.0/20 | 4.1K | — | — | US |
| 209.175.64.0/21 | 2.0K | Illinois Century Network | AS6325 | US |
| 209.175.64.0/21 | 2.0K | Illinois Century Network | AS6325 | US |
| 209.175.76.0/22 | 1.0K | Illinois Century Network | AS6325 | US |
| 209.175.76.0/22 | 1.0K | Illinois Century Network | AS6325 | US |
| 209.175.72.0/22 | 1.0K | CHICAGO STATE UNIVERSITY | AS1702 | US |
| 209.175.72.0/22 | 1.0K | CHICAGO STATE UNIVERSITY | AS1702 | US |
Geolocation
First 256 of 16,384 IP addresses in 209.175.64.0/18
209.175.64.0
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+ 16.1K 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
12,862
Last seen
2026-07-23 23:32:29
Frequently Asked Questions
What is 209.175.64.0/18?
209.175.64.0/18 is a CIDR network block containing 16,384 IPv4 addresses (from 209.175.64.0 to 209.175.127.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 209.175.64.0/18 network?
The 209.175.64.0/18 range is allocated to an unknown organization from United States.
Last updated: 2026-07-23 23:40:31 UTC
