AS401977
Sierra Nevada Communications
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
- Isp allocation +5
- Trust score 70 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 74.82.58.0/24 | 256 |
0.0%
|
Sierra Nevada Communications | US | California | Sonora |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS401977 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 74.82.58.0/24 | 8,903 | 2026-07-24 06:05:52 |
Frequently Asked Questions
What is AS401977?
AS401977 is an Autonomous System Number assigned to Sierra Nevada Communications. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS401977 announce?
AS401977 announces 256 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in United States.
Who operates AS401977?
AS401977 is operated by Sierra Nevada Communications. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS401977 registered in?
AS401977 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
