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CIDR
/19 · 8.2K IPs
ASN
Duke University
Reverse DNS
No PTR record
Blocklisted
Checking…
Scanning blocklists

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

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Network Allocation for 152.3.64.24

CIDR range
152.3.64.0/19
IP range (int)
2,550,349,824 — 2,550,358,015
Prefix length
/19
Organization
Duke University
ASN
AS13371
ASN name
Duke University
Location
Durham, North Carolina, United States
Coordinates
36.022900, -78.946400
Accuracy radius
5 km
Postal code
27705
Regional Internet Registry
ARIN
Allocated
1991-06-07
Data source(s)
maxmind_city, maxmind_asn, ipinfo_lite, maxmind_country
Last updated
2026-07-09 18:20:42

Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.

Announced prefix
Origin AS
Announcement samples
8,799
Last seen
2026-07-20 04:08:00

Frequently Asked Questions

Who owns 152.3.64.24?

152.3.64.24 is allocated to Duke University (AS13371), registered in Durham, United States.

Where is 152.3.64.24 located?

The geolocation for 152.3.64.24 maps to Durham, United States based on MaxMind GeoLite2 data. Accuracy depends on the provider and may represent the ISP's regional hub rather than the exact endpoint.

What network is 152.3.64.24 on?

152.3.64.24 belongs to the 152.3.64.0/19 network block announced by AS13371. This range contains 8,192 addresses.

Does 152.3.64.24 have a reverse DNS record?

Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.

Neighbors

Other addresses in the same /24.

Related

Last updated: 2026-07-18 07:06:47 UTC
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