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CIDR
/21 · 2.0K IPs
ASN
University of California - Office of the President
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.

82/100
Trusted
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 128.48.128.177

CIDR range
128.48.128.0/21
IP range (int)
2,150,662,144 — 2,150,664,191
Prefix length
/21
Organization
University of California - Office of the President
ASN
AS11293
ASN name
University of California - Office of the President
Location
United States
Coordinates
37.751000, -97.822000
Accuracy radius
1000 km
Regional Internet Registry
ARIN
Allocated
1986-06-02
Data source(s)
maxmind_asn, ipinfo_lite, maxmind_city, maxmind_country
Last updated
2026-07-09 18:20:35

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

Announced prefix
Origin AS
Announcement samples
11,700
Last seen
2026-07-23 12:37:27

RIR Ownership History

Atom feed ⇲

Allocation changes captured weekly from regional internet registry (RIR) delegation files for ranges that have contained this IP.

Date Event From To
2026-05-10 New Allocation US

See the full history for 128.48.0.0/14.

Frequently Asked Questions

Who owns 128.48.128.177?

128.48.128.177 is allocated to University of California - Office of the President (AS11293), registered in United States.

Where is 128.48.128.177 located?

The geolocation for 128.48.128.177 maps to 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 128.48.128.177 on?

128.48.128.177 belongs to the 128.48.128.0/21 network block announced by AS11293. This range contains 2,048 addresses.

Does 128.48.128.177 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: 2026-07-23 13:21:04 UTC
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