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IPv4 Address

155.199.39.161

CIDR
/21 · 2.0K IPs
ASN
FMR LLC
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 v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network Allocation for 155.199.39.161

CIDR range
155.199.32.0/21
IP range (int)
2,613,518,336 — 2,613,520,383
Prefix length
/21
Organization
FMR LLC
ASN
AS40923
ASN name
FMR LLC
Location
United States
Coordinates
37.751000, -97.822000
Accuracy radius
1000 km
Regional Internet Registry
ARIN
Allocated
1991-10-30
Data source(s)
maxmind_asn, ipinfo_lite, maxmind_city, maxmind_country
Last updated
2026-07-09 18:20:44

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

Announced prefix
Origin AS
Announcement samples
6,765
Last seen
2026-07-30 06:05:58

Frequently Asked Questions

Who owns 155.199.39.161?

155.199.39.161 is allocated to FMR LLC (AS40923), registered in United States.

Where is 155.199.39.161 located?

The geolocation for 155.199.39.161 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 155.199.39.161 on?

155.199.39.161 belongs to the 155.199.32.0/21 network block announced by AS40923. This range contains 2,048 addresses.

Does 155.199.39.161 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: 2026-07-30 06:28:06 UTC
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