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WorldIP.io
Autonomous System

AS40509

Fly.io, Inc.

Fly.io, Inc. United States 🌐 fly.io
Announced IPs
78,848
CIDR prefixes
36
ASN
AS40509

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.

65/100
Moderate
How this score is built

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type Content
Geographic scope Not Disclosed
Traffic ratio Not Disclosed
Peering policy Open
Website ↗

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
37.16.0.0/19 8.2K
99.1%
Fly.io, Inc. US — —
137.66.0.0/19 8.2K
98.8%
Fly.io, Inc. US — —
149.248.192.0/19 8.2K
99.1%
Fly.io, Inc. US — —
213.188.192.0/19 8.2K
99.1%
Fly.io, Inc. US California San Jose
137.66.48.0/20 4.1K
98.9%
Fly.io, Inc. US — —
168.220.80.0/20 4.1K
99.0%
Fly.io, Inc. US — —
169.155.48.0/20 4.1K
99.2%
Fly.io, Inc. US — —
209.71.80.0/20 4.1K
99.3%
Fly.io, Inc. US — —
209.71.96.0/20 4.1K
99.1%
Fly.io, Inc. US Virginia Ashburn
213.188.208.0/20 4.1K
99.0%
Fly.io, Inc. US — —
66.51.120.0/21 2.0K
99.7%
Fly.io, Inc. US — —
109.105.216.0/21 2.0K
99.5%
Fly.io, Inc. US — —
137.66.32.0/21 2.0K
99.2%
Fly.io, Inc. US — —
172.86.144.0/21 2.0K
99.0%
Fly.io, Inc. US Illinois Chicago
188.93.144.0/21 2.0K
99.0%
Fly.io, Inc. US — —
209.71.64.0/21 2.0K
99.5%
Fly.io, Inc. US — —
209.71.112.0/21 2.0K
0.0%
Fly.io, Inc. US Virginia Ashburn
213.188.192.0/21 2.0K
99.1%
Fly.io, Inc. US — —
66.241.112.0/22 1.0K
98.9%
Fly.io, Inc. US — —
77.83.140.0/22 1.0K
99.0%
Fly.io, Inc. US — —
137.66.44.0/22 1.0K
98.4%
Fly.io, Inc. US — —
172.86.144.0/22 1.0K
99.0%
Fly.io, Inc. US Illinois Chicago
204.8.216.0/22 1.0K
98.9%
Fly.io, Inc. US California San Jose
204.10.76.0/22 1.0K
98.7%
Fly.io, Inc. US — —
209.71.72.0/22 1.0K
99.3%
Fly.io, Inc. US Texas Dallas
66.241.124.0/23 512
99.0%
Fly.io, Inc. US — —
137.66.42.0/23 512
98.6%
Fly.io, Inc. US — —
204.8.216.0/23 512
99.2%
Fly.io, Inc. US California San Jose
204.8.220.0/23 512
98.8%
Fly.io, Inc. US Texas Dallas
209.71.72.0/23 512
99.4%
Fly.io, Inc. US Texas Dallas
209.71.76.0/23 512
99.4%
Fly.io, Inc. US Texas Dallas
209.71.92.0/23 512
99.0%
Fly.io, Inc. US Texas Dallas
209.71.102.0/23 512
98.2%
Fly.io, Inc. US Virginia Ashburn
209.71.112.0/23 512
98.0%
Fly.io, Inc. US Virginia Ashburn
209.71.120.0/23 512
0.0%
Fly.io, Inc. US — —
209.198.240.0/23 512
98.8%
Fly.io, Inc. US — —
50.31.246.0/24 256
97.7%
Fly.io, Inc. US — —
66.241.112.0/24 256
100.0%
Fly.io, Inc. SE Stockholm County Stockholm
66.241.113.0/24 256
98.8%
Fly.io, Inc. SG — —
66.241.114.0/24 256
98.8%
Fly.io, Inc. ZA Gauteng Johannesburg
66.241.115.0/24 256
98.0%
Fly.io, Inc. CA Ontario Toronto
66.241.123.0/24 256
99.6%
Fly.io, Inc. US — —
66.241.127.0/24 256
98.8%
Fly.io, Inc. US — —
137.66.40.0/24 256
98.8%
Fly.io, Inc. US — —
172.86.148.0/24 256
99.6%
Fly.io, Inc. NL North Holland Amsterdam
172.86.149.0/24 256
98.4%
Fly.io, Inc. DE Hesse Frankfurt am Main
172.86.150.0/24 256
99.6%
Fly.io, Inc. FR Île-de-France Paris
172.86.151.0/24 256
98.4%
Fly.io, Inc. US California Los Angeles
204.8.218.0/24 256
99.2%
Fly.io, Inc. US Texas Dallas
204.8.219.0/24 256
98.0%
Fly.io, Inc. BR São Paulo São Paulo
204.8.222.0/24 256
99.6%
Fly.io, Inc. US — —
206.51.242.0/24 256
97.7%
Fly.io, Inc. US — —
209.71.64.0/24 256
99.2%
Fly.io, Inc. NL North Holland Amsterdam
209.71.65.0/24 256
99.6%
Fly.io, Inc. SE Stockholm County Stockholm
209.71.66.0/24 256
98.4%
Fly.io, Inc. US Texas Dallas
209.71.67.0/24 256
98.8%
Fly.io, Inc. BR São Paulo São Paulo
209.71.68.0/24 256
100.0%
Fly.io, Inc. SG — —
209.71.69.0/24 256
99.6%
Fly.io, Inc. US New Jersey Secaucus
209.71.70.0/24 256
100.0%
Fly.io, Inc. FR Île-de-France Paris
209.71.71.0/24 256
100.0%
Fly.io, Inc. US Texas Dallas
209.71.74.0/24 256
98.4%
Fly.io, Inc. BR São Paulo São Paulo
209.71.75.0/24 256
100.0%
Fly.io, Inc. DE Hesse Frankfurt am Main
209.71.76.0/24 256
99.6%
Fly.io, Inc. US Texas Dallas
209.71.77.0/24 256
99.2%
Fly.io, Inc. BR São Paulo São Paulo
209.71.78.0/24 256
98.4%
Fly.io, Inc. US — —
209.71.80.0/24 256
100.0%
Fly.io, Inc. SG — —
209.71.81.0/24 256
98.0%
Fly.io, Inc. US Virginia Ashburn
209.71.82.0/24 256
99.6%
Fly.io, Inc. GB England London
209.71.83.0/24 256
99.6%
Fly.io, Inc. ZA Gauteng Johannesburg
209.71.84.0/24 256
99.2%
Fly.io, Inc. US California Los Angeles
209.71.85.0/24 256
100.0%
Fly.io, Inc. GB England London
209.71.86.0/24 256
99.2%
Fly.io, Inc. FR Île-de-France Paris
209.71.87.0/24 256
99.2%
Fly.io, Inc. US Texas Dallas
209.71.88.0/24 256
99.6%
Fly.io, Inc. JP Tokyo Tokyo
209.71.89.0/24 256
99.2%
Fly.io, Inc. US Illinois Chicago
209.71.90.0/24 256
99.6%
Fly.io, Inc. DE Hesse Frankfurt am Main
209.71.91.0/24 256
98.4%
Fly.io, Inc. US California Los Angeles
209.71.94.0/24 256
98.8%
Fly.io, Inc. BR São Paulo São Paulo
209.71.95.0/24 256
99.6%
Fly.io, Inc. SG — —
209.71.96.0/24 256
98.8%
Fly.io, Inc. US California San Jose
209.71.97.0/24 256
99.6%
Fly.io, Inc. AU New South Wales Sydney
209.71.98.0/24 256
99.6%
Fly.io, Inc. SE Stockholm County Stockholm
209.71.99.0/24 256
99.2%
Fly.io, Inc. CA Ontario Toronto
209.71.100.0/24 256
99.2%
Fly.io, Inc. CA Ontario Toronto
209.71.101.0/24 256
98.0%
Fly.io, Inc. US California San Jose
209.71.104.0/24 256
99.6%
Fly.io, Inc. US Virginia Ashburn
209.71.105.0/24 256
99.6%
Fly.io, Inc. NL North Holland Amsterdam
209.71.106.0/24 256
99.6%
Fly.io, Inc. DE Hesse Frankfurt am Main
209.71.107.0/24 256
98.0%
Fly.io, Inc. JP — —
209.71.108.0/24 256
99.2%
Fly.io, Inc. US Virginia Ashburn
209.71.109.0/24 256
100.0%
Fly.io, Inc. DE Hesse Frankfurt am Main
209.71.110.0/24 256
98.8%
Fly.io, Inc. AU New South Wales Sydney
209.71.111.0/24 256
99.2%
Fly.io, Inc. US Virginia Ashburn
209.71.114.0/24 256
100.0%
Fly.io, Inc. DE Hesse Frankfurt am Main
209.71.115.0/24 256
99.2%
Fly.io, Inc. US Illinois Chicago
209.71.116.0/24 256
99.2%
Fly.io, Inc. US Virginia Ashburn
209.71.117.0/24 256
99.6%
Fly.io, Inc. NL — —
209.71.118.0/24 256
98.4%
Fly.io, Inc. DE — —
209.71.119.0/24 256
99.2%
Fly.io, Inc. US — —
209.71.120.0/24 256
98.4%
Fly.io, Inc. JP — —

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS40509 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
66.241.113.0/24 113,986 2026-11-13 08:15:22
209.71.68.0/24 110,468 2026-11-13 08:15:22
209.71.97.0/24 68,461 2026-11-13 08:04:30
213.188.202.0/24 52,048 2026-11-13 08:04:30
204.10.76.0/23 33,314 2026-11-13 08:15:21
66.241.124.0/23 31,478 2026-11-13 08:18:07
172.86.146.0/24 30,879 2026-11-13 08:18:07
37.16.6.0/23 30,634 2026-11-13 08:18:07
37.16.4.0/23 30,285 2026-11-13 08:18:07
137.66.10.0/23 30,239 2026-11-13 08:18:07
37.16.10.0/23 30,228 2026-11-13 08:18:07
37.16.8.0/23 30,217 2026-11-13 08:18:07
37.16.28.0/23 30,186 2026-11-13 08:18:07
137.66.44.0/23 30,162 2026-11-13 08:18:07
37.16.2.0/23 30,162 2026-11-13 08:18:07
37.16.30.0/23 30,161 2026-11-13 08:18:07
37.16.0.0/23 30,153 2026-11-13 08:18:07
37.16.22.0/23 30,148 2026-11-13 08:18:07
188.93.144.0/23 30,147 2026-11-13 08:18:07
37.16.20.0/23 30,135 2026-11-13 08:18:07
37.16.14.0/23 30,113 2026-11-13 08:18:07
37.16.12.0/23 30,093 2026-11-13 08:18:07
37.16.24.0/23 30,083 2026-11-13 08:18:07
37.16.26.0/23 30,067 2026-11-13 08:18:07
213.188.198.0/23 30,065 2026-11-13 08:18:07
168.220.94.0/23 30,060 2026-11-13 08:18:07
37.16.16.0/23 30,053 2026-11-13 08:18:07
37.16.18.0/23 30,027 2026-11-13 08:18:07
172.86.147.0/24 29,995 2026-11-13 08:18:07
149.248.202.0/23 29,980 2026-11-13 08:18:07
137.66.8.0/23 29,952 2026-11-13 08:18:07
213.188.210.0/23 29,941 2026-11-13 08:18:07
213.188.196.0/23 29,914 2026-11-13 08:18:07
137.66.42.0/23 29,879 2026-11-13 08:18:07
168.220.92.0/23 29,876 2026-11-13 08:18:07
149.248.200.0/23 29,870 2026-11-13 08:18:07
137.66.30.0/23 29,851 2026-11-13 08:18:07
137.66.12.0/23 29,845 2026-11-13 08:18:07
66.241.127.0/24 29,830 2026-11-13 08:18:07
137.66.48.0/23 29,826 2026-11-13 08:18:07
137.66.14.0/23 29,822 2026-11-13 08:18:07
137.66.36.0/23 29,819 2026-11-13 08:18:07
66.51.124.0/23 29,819 2026-11-13 08:18:07
188.93.148.0/23 29,807 2026-11-13 08:18:07
137.66.2.0/23 29,802 2026-11-13 08:18:07
66.51.122.0/23 29,792 2026-11-13 08:18:07
66.51.126.0/23 29,792 2026-11-13 08:18:07
137.66.34.0/23 29,789 2026-11-13 08:18:07
137.66.0.0/23 29,788 2026-11-13 08:18:07
66.51.120.0/23 29,783 2026-11-13 08:18:07

Showing top 50 of 200 announced prefixes by sample volume.

Frequently Asked Questions

What is AS40509?

AS40509 is an Autonomous System Number assigned to Fly.io, Inc.. 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 AS40509 announce?

AS40509 announces 78.8K IPv4 addresses distributed across 36 routed CIDR prefixes. The network is registered in United States.

Who operates AS40509?

AS40509 is operated by Fly.io, Inc.. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS40509 registered in?

AS40509 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-11-13 08:24:05 UTC
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