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:         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:      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:         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 24 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	glazenwasserrotterdam.nl	31
137.66.13.62	lgt.st	3
137.66.12.176	dev-creations.de	2
137.66.12.82	insidefighting.ca	2
137.66.12.70	stockholmcpp.se	2
137.66.12.6	rocketrental.space	1
137.66.12.173	internot.ai	1
137.66.13.28	limado.sk	1
137.66.13.233	prismpilot.com	1
137.66.12.166	elatedpixel.com	1
137.66.13.52	vadevs.com	1
137.66.13.116	aieconometrics.com	1
137.66.12.100	itealisten.dk	1
137.66.13.186	opt-kom.pl	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
137.66.13.113	AS40509 Fly.io, Inc.	`0.08ms` from Johannesburg, ZA
137.66.12.91	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
77.171.253.7	AS1136 KPN B.V.	`2.42ms` from Amsterdam, NL
37.3.208.215	AS1257 Tele2 Sverige AB	`1.97ms` from Copenhagen, DK
191.219.25.23	AS8167 V tal	`1.35ms` from Curitiba, BR
14.245.233.71	AS45899 VNPT Corp	`8.01ms` from Da Nang, VN
60.191.65.87	AS4134 CHINANET-BACKBONE	`4.02ms` from Hangzhou, CN
172.88.229.119	AS20001 Charter Communications Inc	`4.89ms` from Los Angeles, US
79.23.194.7	AS3269 Telecom Italia S.p.A.	`9.32ms` from Milan, IT
97.205.243.23	AS6167 Verizon Business	`14.77ms` from San Jose, US
189.190.239.215	AS8151 UNINET	`6.27ms` from Santiago de Queretaro, MX
179.125.130.119	AS28649 Desktop Sigmanet Comunicação Multimídia SA	`2.07ms` from Sao Paulo, BR
172.188.215.103	AS8075 Microsoft Corporation	`0.51ms` from Singapore, SG
121.6.2.199	AS9506 Singtel Fibre Broadband	`1.39ms` from Singapore, SG
124.126.18.135	AS4847 China Networks Inter-Exchange	`2.53ms` from Tianjin, CN
54.248.95.151	AS16509 Amazon.com, Inc.	`0.21ms` from Tokyo, JP
37.151.172.103	AS9198 JSC Kazakhtelecom	`2.13ms` from Almaty, KZ
80.95.171.87	AS24586 Intermax Group B.V.	`1.83ms` from Amsterdam, NL
20.80.194.199	AS8075 Microsoft Corporation	`0.38ms` from Boydton, US
13.69.239.87	AS8075 Microsoft Corporation	`0.14ms` from Dublin, IE
80.136.183.39	AS3320 Deutsche Telekom AG	`3.81ms` from Frankfurt am Main, DE
27.156.72.183	AS4134 CHINANET-BACKBONE	`2.21ms` from Fuzhou, CN
3.111.198.231	AS16509 Amazon.com, Inc.	`0.15ms` from Mumbai, IN
153.99.97.119	AS4837 CHINA UNICOM China169 Backbone	`6.63ms` from Nanjing, CN
3.89.244.247	AS14618 Amazon.com, Inc.	`0.43ms` from Reston, US
20.210.117.231	AS8075 Microsoft Corporation	`0.15ms` from Tokyo, JP
110.131.31.151	AS9824 JCOM Co., Ltd.	`5.51ms` 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 137.66.13.66

traceroute to 137.66.13.66 (137.66.13.66): 64 hops max, 52 byte packets

2 [AS7195] 200.25.52.193 17.707 ms

3 [AS40509] 137.66.13.66 0.119 ms

Measurement taken from

IPinfo ProbeNet in Rio de Janeiro, BR

On August 22nd 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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