AS21743
Atlas Networks Corporation
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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 1 internet exchange: SIX Seattle: MTU 1500
AS21743 — global IP footprint
Cities where AS21743 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS21743 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 |
|---|---|---|
| 216.247.100.0/22 | 6,306 | 2026-07-23 15:48:33 |
| 66.93.14.0/24 | 5,286 | 2026-07-23 15:48:35 |
| 154.6.48.0/22 | 3,916 | 2026-07-23 15:45:04 |
| 66.248.243.0/24 | 3,908 | 2026-07-23 15:48:36 |
| 45.42.141.0/24 | 3,882 | 2026-07-23 15:48:36 |
| 69.5.52.0/22 | 3,882 | 2026-07-23 15:48:36 |
| 104.254.210.0/23 | 3,871 | 2026-07-23 15:48:36 |
| 45.42.142.0/24 | 3,863 | 2026-07-23 15:48:36 |
| 66.171.176.0/20 | 3,832 | 2026-07-23 15:48:36 |
| 91.234.156.0/22 | 3,819 | 2026-07-23 15:48:36 |
| 104.247.120.0/22 | 3,813 | 2026-07-23 15:48:36 |
| 66.170.184.0/21 | 3,791 | 2026-07-23 15:48:36 |
| 104.255.0.0/22 | 3,776 | 2026-07-23 15:48:36 |
| 216.75.151.0/24 | 3,776 | 2026-07-23 15:48:35 |
| 104.36.44.0/22 | 3,771 | 2026-07-23 15:48:36 |
| 104.192.204.0/22 | 3,747 | 2026-07-23 15:48:36 |
| 209.200.234.0/23 | 3,729 | 2026-07-23 15:48:34 |
| 149.18.8.0/22 | 3,724 | 2026-07-23 15:48:36 |
| 161.129.176.0/24 | 3,709 | 2026-07-23 15:48:36 |
| 199.231.240.0/21 | 3,620 | 2026-07-23 15:48:36 |
| 64.57.177.0/24 | 1,347 | 2026-07-23 15:48:30 |
| 165.140.26.0/24 | 1,343 | 2026-07-23 15:48:35 |
Frequently Asked Questions
What is AS21743?
AS21743 is an Autonomous System Number assigned to Atlas Networks Corporation. 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 AS21743 announce?
AS21743 announces 19.5K IPv4 addresses distributed across 21 routed CIDR prefixes. The network is registered in United States.
Who operates AS21743?
AS21743 is operated by Atlas Networks Corporation. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS21743 registered in?
AS21743 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
