137.66.0.0/23

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 35 domain names hosted across 28 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
137.66.1.208	snappi-cdn.com	3
137.66.1.13	veterinarjobb.se	2
137.66.1.140	lokal-hochzeit.de	2
137.66.0.38	anuneet.ml	2
137.66.1.141	trabajosoptica.com	2
137.66.1.149	nemohangeul.com	2
137.66.1.217	unsear.ch	1
137.66.0.18	pigskinprogs.com	1
137.66.0.186	spanishguesser.com	1
137.66.0.44	josephmcwhorter.com	1
137.66.0.237	useveloz.com	1
137.66.1.39	betanddebate.com	1
137.66.1.119	pgentz.de	1
137.66.1.33	w1n-w1n.io	1
137.66.0.184	alameda.one	1
137.66.0.147	occult.house	1
137.66.0.235	banchan.art	1
137.66.1.66	brightntech.ai	1
137.66.0.233	greystoneconnect.org	1
137.66.1.252	clubepauloafonso.com.br	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
137.66.1.29	AS40509 Fly.io, Inc.	`0.10ms` from Osasco, BR
137.66.0.5	AS40509 Fly.io, Inc.	`0.10ms` from Mumbai, IN

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
52.203.97.119	AS14618 Amazon.com, Inc.	`0.48ms` from Ashburn, US
98.90.111.167	AS14618 Amazon.com, Inc.	`0.48ms` from Ashburn, US
35.171.18.167	AS14618 Amazon.com, Inc.	`0.47ms` from Ashburn, US
162.202.104.103	AS7018 AT&T Enterprises, LLC	`2.48ms` from Dallas, US
34.4.25.103	AS15169 Google LLC	`0.38ms` from Delhi, IN
103.140.61.87	AS139241 Avrotech Sdn Bhd	`6.71ms` from Kuala Lumpur, MY
85.236.55.55	AS15456 InterNetX GmbH	`5.62ms` from Ljubljana, SI
60.209.15.167	AS4837 CHINA UNICOM China169 Backbone	`2.23ms` from Qingdao, CN
43.206.208.39	AS16509 Amazon.com, Inc.	`0.22ms` from Tokyo, JP
31.6.144.215	AS21021 Multimedia Polska Sp. z o.o.	`10.42ms` from Warsaw, PL
20.54.198.39	AS8075 Microsoft Corporation	`0.22ms` from Amsterdam, NL
67.163.109.247	AS7922 Comcast Cable Communications, LLC	`9.95ms` from Ashburn, US
76.210.89.231	AS7018 AT&T Enterprises, LLC	`13.03ms` from Chicago, US
113.205.170.183	AS4837 CHINA UNICOM China169 Backbone	`2.47ms` from Chongqing, CN
78.35.146.7	AS8422 NetCologne Gesellschaft fur Telekommunikation mbH	`2.07ms` from Duesseldorf, DE
61.142.69.39	AS4134 CHINANET-BACKBONE	`3.50ms` from Guangzhou, CN
81.140.212.183	AS2856 British Telecommunications PLC	`2.76ms` from London, GB
46.18.204.183	AS48479 KUBAN-TELECOM Ltd.	`16.61ms` from Moscow, RU
203.15.141.7	AS139207 Serverworld	`0.75ms` from Perth, AU
202.62.129.103	AS9443 Vocus Retail	`1.19ms` from Perth, AU
152.70.115.199	AS31898 Oracle Corporation	`0.14ms` from San Jose, US
189.61.244.7	AS28573 Claro NXT Telecomunicacoes Ltda	`2.71ms` from Sao Paulo, BR
54.180.147.215	AS16509 Amazon.com, Inc.	`0.78ms` from Seoul, KR
54.174.238.135	AS14618 Amazon.com, Inc.	`0.46ms` from Ashburn, US
111.167.33.55	AS4837 CHINA UNICOM China169 Backbone	`4.76ms` from Beijing, CN

Traceroute

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

traceroute -a -n -q1 -f3 137.66.0.148

traceroute to 137.66.0.148 (137.66.0.148): 64 hops max, 52 byte packets

3 [AS137409] 160.202.164.245 0.759 ms

4 [AS40509] 137.66.0.148 0.152 ms

Measurement taken from

IPinfo ProbeNet in Sydney, AU

On March 21st 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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