137.66.20.0/23

AS40509 · Fly.io, Inc.

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Summary

Country	United States
Domain	fly.io
ASN	AS40509
Registry	ARIN
ID	FLYIO

WHOIS Details

NetHandle:      NET-137-66-0-0-1
OrgID:          FLYIO
Parent:         NET-137-0-0-0-0
NetName:        FLYIO
NetRange:       137.66.0.0 - 137.66.63.255
NetType:        allocation
RegDate:        2022-04-29
Updated:        2022-04-29
Source:         ARIN


OrgID:          FLYIO
OrgName:        Fly.io, Inc.
CanAllocate:    
Street:         PO Box 803338 #19104
City:           Chicago
State/Prov:     IL
Country:        US
PostalCode:     60680-3338
RegDate:        2017-01-18
Updated:        2025-01-10
OrgAdminHandle: FLYOP-ARIN
OrgTechHandle:  BERRY359-ARIN
OrgTechHandle:  FLYOP-ARIN
OrgAbuseHandle: ABUSE8489-ARIN
OrgNOCHandle:   FLYOP-ARIN
Source:         ARIN


POCHandle:      BERRY359-ARIN
IsRole:         N
LastName:       Berryman
FirstName:      Steve
Street:         630 Davidson Road
City:           Croydon
State/Prov:     
Country:        GB
PostalCode:     CR0 6DJ
RegDate:        2021-11-11
Updated:        2025-01-10
OfficePhone:    +447886749129
Mailbox:        steve@fly.io
Source:         ARIN


POCHandle:      ABUSE8489-ARIN
IsRole:         Y
LastName:       Abuse
FirstName:      
Street:         2261 Market Street #4990
City:           San Francisco
State/Prov:     CA
Country:        US
PostalCode:     94114
RegDate:        2022-07-20
Updated:        2025-08-06
OfficePhone:    +1-312-626-4490
Mailbox:        abuse@fly.io
Source:         ARIN


POCHandle:      FLYOP-ARIN
IsRole:         Y
LastName:       Fly Ops
FirstName:      
Street:         PO Box 803338 #19104
City:           Chicago
State/Prov:     IL
Country:        US
PostalCode:     60680-3338
RegDate:        2017-01-15
Updated:        2024-11-07
OfficePhone:    +1-312-283-4377
Mailbox:        ops@fly.io
Source:         ARIN

Hosted domains

There are 61 domain names hosted across 32 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
137.66.21.179	itslearning.se	16
137.66.20.139	heduna.com	4
137.66.20.249	confuzzle.me	2
137.66.20.226	peril.jp	2
137.66.21.6	sermons.tech	2
137.66.21.60	bargainbooom.com	1
137.66.20.80	testimonialtiger.com	1
137.66.21.168	flexifunnels.app	1
137.66.21.148	railsready.com	1
137.66.21.214	alive-project.com	1
137.66.20.212	outlands.vip	1
137.66.21.219	starocean2.com	1
137.66.20.246	jakemiles.com	1
137.66.21.96	nerves-metal-detector.org	1
137.66.20.142	vybroo.tv	1
137.66.20.96	cpt.works	1
137.66.20.224	springplay.dev	1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

511 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
137.66.20.103	AS40509 Fly.io, Inc.	`0.08ms` from Rio de Janeiro, BR
137.66.21.94	AS40509 Fly.io, Inc.	`0.09ms` from Johannesburg, ZA

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
103.107.130.231	AS137399 KernWi-Fi Pty Ltd	`0.47ms` from Adelaide, AU
190.13.62.231	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`18.19ms` from Bogota, CO
196.208.51.231	AS20011 Dimension Data	`2.65ms` from Cape Town, ZA
209.189.135.103	AS54249 Albuquerque Public Schools	`12.21ms` from Denver, US
98.151.218.199	AS20001 Charter Communications Inc	`8.89ms` from Honolulu, US
129.151.243.103	AS31898 Oracle Corporation	`0.15ms` from Marseille, FR
172.233.187.199	AS63949 Akamai Connected Cloud	`0.58ms` from Miami, US
118.104.124.135	AS18126 Chubu Telecommunications Company, Inc.	`3.77ms` from Osaka, JP
98.7.207.199	AS12271 Charter Communications Inc	`3.27ms` from Secaucus, US
112.154.228.7	AS17858 LG POWERCOMM	`1.97ms` from Seoul, KR
222.104.200.215	AS4766 Korea Telecom	`5.34ms` from Seoul, KR
114.180.195.87	AS4713 NTT Communications Corporation	`3.66ms` from Tokyo, JP
186.17.89.39	AS23201 Telecel S.A.	`2.72ms` from Asuncion, PY
125.39.239.23	AS4837 CHINA UNICOM China169 Backbone	`4.80ms` from Beijing, CN
152.44.33.247	AS25697 UpCloud USA Inc	`0.17ms` from Chicago, US
52.15.120.119	AS16509 Amazon.com, Inc.	`0.14ms` from Columbus, US
48.214.226.183	AS8075 Microsoft Corporation	`0.18ms` from Des Moines, US
52.253.169.7	AS8075 Microsoft Corporation	`1.20ms` from Frankfurt am Main, DE
89.180.40.167	AS2860 NOS COMUNICACOES, S.A.	`6.30ms` from Lisbon, PT
90.200.244.7	AS5607 Sky UK Limited	`6.66ms` from London, GB
187.226.33.135	AS8151 UNINET	`3.72ms` from Mexico City, MX
104.106.85.71	AS6762 TELECOM ITALIA SPARKLE S.p.A.	`0.46ms` from Milan, IT
67.126.70.183	AS7018 AT&T Enterprises, LLC	`6.46ms` from Redding, US
182.210.247.7	AS17858 LG POWERCOMM	`2.13ms` from Seoul, KR
126.75.96.119	AS17676 SoftBank Corp.	`3.96ms` from Tokyo, JP

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f2 137.66.21.160

traceroute to 137.66.21.160 (137.66.21.160): 64 hops max, 52 byte packets

2 [AS7195] 200.25.52.193 64.542 ms

3 [AS40509] 137.66.21.160 0.112 ms

Measurement taken from

IPinfo ProbeNet in Rio de Janeiro, BR

On August 28th 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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