Skip to main content
CIDR
/19 · 8.2K IPs
ASN
University of Washington
Reverse DNS
irb--1017.uwer-slc-1.infra.washington.edu
Last scanned 1 days ago
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.

86/100
Trusted
How this score is built

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

DNS records

Reverse DNS (PTR)
irb--1017.uwer-slc-1.infra.washington.edu
Forward-confirmed (FCrDNS)
✓ Confirmed
PTR TTL
86400 s
Reverse DNS last checked
2026-07-19 04:49 UTC
Forward DNS last checked
2026-07-19 04:49 UTC

Forward DNS records for irb--1017.uwer-slc-1.infra.washington.edu

TypeValuePriorityTTL
A 140.142.64.100 172800s
A 140.142.64.101 172800s
A 172.22.64.100 172800s
A 172.22.64.101 172800s
every IP & sub-domain we've seen under this domain

Reverse & forward DNS collected by the WorldIP scanner fleet — FCrDNS confirms the PTR hostname resolves back to this IP.

Network Allocation for 140.142.64.101

CIDR range
140.142.64.0/19
IP range (int)
2,358,132,736 — 2,358,140,927
Prefix length
/19
Organization
University of Washington
ASN
AS73
ASN name
University of Washington
Location
Seattle, Washington, United States
Coordinates
47.749100, -122.366800
Accuracy radius
10 km
Postal code
98177
Regional Internet Registry
ARIN
Allocated
1990-04-24
Data source(s)
maxmind_city, maxmind_asn, maxmind_country, ipinfo_lite
Last updated
2026-07-09 06:21:25

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

Announced prefix
Origin AS
Announcement samples
3,799
Last seen
2026-07-19 19:39:41

Frequently Asked Questions

Who owns 140.142.64.101?

140.142.64.101 is allocated to University of Washington (AS73), registered in Seattle, United States.

Where is 140.142.64.101 located?

The geolocation for 140.142.64.101 maps to Seattle, 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 140.142.64.101 on?

140.142.64.101 belongs to the 140.142.64.0/19 network block announced by AS73. This range contains 8,192 addresses.

Does 140.142.64.101 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 18:59:46 UTC
Share