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
- Academic allocation +6
- Trust score 71 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Duke University — global IP footprint
Cities where Duke University has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Countries served by Duke University
Every country where this organization has IPv4 allocations, ranked by IPs held.
Largest CIDR ranges
| CIDR | IPs | PTR Density | ASN | Country | State | City |
|---|---|---|---|---|---|---|
| 152.3.0.0/16 | 65.5K |
15.6%
|
AS13371 | US | North Carolina | Durham |
| 152.16.0.0/16 | 65.5K |
5.9%
|
AS13371 | US | North Carolina | Durham |
| 67.159.64.0/18 | 16.4K |
5.1%
|
AS13371 | US | — | — |
| 152.22.224.0/20 | 4.1K |
0.0%
|
AS13371 | US | — | — |
| 198.86.29.0/24 | 256 |
0.4%
|
AS13371 | US | — | — |
Frequently Asked Questions
How many IP addresses does Duke University own?
Duke University controls 151.8K IPv4 addresses distributed across 5 CIDR ranges. The organization is registered in United States.
What ASNs does Duke University operate?
Duke University operates 1 Autonomous System. Each ASN represents an independently routed network that Duke University manages for internet traffic delivery.
What type of organization is Duke University?
Duke University is categorized as academic. This classification is based on the organization's primary use of its IP address allocations.
