137.66.12.0/23

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:         2261 Market Street
City:           San Francisco
State/Prov:     CA
Country:        US
PostalCode:     94114
RegDate:        2017-01-18
Updated:        2025-11-18
OrgAdminHandle: FLYOP-ARIN
OrgTechHandle:  BERRY359-ARIN
OrgTechHandle:  FLYOP-ARIN
OrgAbuseHandle: ABUSE8489-ARIN
OrgNOCHandle:   FLYOP-ARIN
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:      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:      FLYOP-ARIN
IsRole:         Y
LastName:       Fly Ops
FirstName:      
Street:         2261 Market Street
City:           San Francisco
State/Prov:     CA
Country:        US
PostalCode:     94114
RegDate:        2017-01-15
Updated:        2025-11-18
OfficePhone:    +1-312-283-4377
Mailbox:        ops@fly.io
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 137.66.0.0/16

No nearby ranges found.

Hosted domains

There are 56 domain names hosted across 26 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
137.66.13.242	cyclingincatalonia.com	25
137.66.13.62	lightsats.com	3
137.66.12.82	insidefighting.ca	2
137.66.13.85	chinacompass.vip	2
137.66.12.176	dev-creations.com	2
137.66.12.190	mtlenbruit.ca	2
137.66.13.52	vadevs.com	1
137.66.12.173	internot.ai	1
137.66.13.189	kaseva.net	1
137.66.12.152	p3.systems	1
137.66.12.70	swedencpp.se	1
137.66.12.121	oekobilanz.app	1
137.66.12.168	casamentopaolaedaniel.com.br	1
137.66.12.117	gin-cruise.com	1
137.66.12.133	ruby.sg	1
137.66.13.28	limado.sk	1
137.66.12.122	bitcoinpuzzles.io	1
137.66.12.91	electricfiddle.net	1
137.66.12.6	rocketrental.space	1
137.66.12.166	elatedpixel.com	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
137.66.12.215	AS40509 Fly.io, Inc.	`0.09ms` from Osasco, BR
137.66.13.151	AS40509 Fly.io, Inc.	`0.10ms` from Osasco, BR

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
107.130.20.151	AS7018 AT&T Enterprises, LLC	`2.89ms` from Chicago, US
93.226.214.55	AS3320 Deutsche Telekom AG	`4.72ms` from Duesseldorf, DE
74.126.138.215	AS14615 Comporium, Inc	`8.64ms` from Durham, US
102.117.12.247	AS23889 Mauritius Telecom Ltd	`1.54ms` from Ebene, MU
61.142.120.55	AS4134 CHINANET-BACKBONE	`4.22ms` from Guangzhou, CN
60.90.140.23	AS17676 SoftBank Corp.	`3.63ms` from Osaka, JP
220.107.28.23	AS4713 NTT DOCOMO BUSINESS,Inc.	`8.51ms` from Osaka, JP
73.116.148.231	AS7922 Comcast Cable Communications, LLC	`4.91ms` from San Jose, US
123.60.67.183	AS55990 Huawei Cloud Service data center	`3.78ms` from Shanghai, CN
52.246.156.39	AS8075 Microsoft Corporation	`0.63ms` from Toronto, CA
188.68.132.215	AS16285 Joint Stock Company TransTeleCom	`1.25ms` from Yekaterinburg, RU
84.142.214.23	AS3320 Deutsche Telekom AG	`3.96ms` from Berlin, DE
181.192.70.135	AS52419 CESOP	`6.39ms` from Buenos Aires, AR
162.245.84.247	AS19084 ColoUp	`0.21ms` from Buffalo, US
140.143.98.87	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.81ms` from Chengdu, CN
162.233.149.39	AS7018 AT&T Enterprises, LLC	`9.49ms` from Dallas, US
98.195.79.151	AS7922 Comcast Cable Communications, LLC	`7.57ms` from Houston, US
49.163.82.119	AS17858 LG POWERCOMM	`1.76ms` from Incheon, KR
78.169.111.215	AS9121 Turk Telekomunikasyon Anonim Sirketi	`8.90ms` from Istanbul, TR
27.58.238.215	AS24560 Bharti Airtel Ltd., Telemedia Services	`6.81ms` from Kolkata, IN
35.227.225.231	AS396982 Google LLC	`0.07ms` from Melbourne, AU
82.208.93.55	AS12389 PJSC Rostelecom	`7.67ms` from Moscow, RU
173.69.143.103	AS701 Verizon Business	`4.53ms` from Philadelphia, US
37.3.52.151	AS1257 Tele2 Sverige AB	`0.66ms` from Stockholm, SE
108.177.108.215	AS15169 Google LLC	`0.14ms` from Sydney, AU

Traceroute

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

traceroute -a -n -q1 -f3 137.66.12.221

traceroute to 137.66.12.221 (137.66.12.221): 64 hops max, 52 byte packets

3 [AS137409] 160.202.164.245 0.732 ms

4 [AS40509] 137.66.12.221 0.181 ms

Measurement taken from

IPinfo ProbeNet in Sydney, AU

On March 20th 2026

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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