1. All IP Ranges
  2. 137.0.0.0/8
  3. 137.66.0.0/16
  4. AS40509  | 137.66.20.0/23

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:         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:      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:        [email protected]
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:        [email protected]
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:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 137.66.0.0/16

No nearby ranges found.

Hosted domains

There are 616 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
137.66.21.168 smileflowsystem.in 544
137.66.20.44 killington.com 20
137.66.21.179 wg-testing-1.com 10
137.66.21.105 dddice.com 5
137.66.21.87 endlessmercy.org 4
137.66.20.139 heduna.com 3
137.66.20.226 peril.jp 2
137.66.21.188 hausgedacht.de 2
137.66.20.249 confuzzle.me 2
137.66.21.6 sermons.tech 2
137.66.20.212 outlands.vip 1
137.66.20.233 kirillshevch.com 1
137.66.20.96 cpt.works 1
137.66.21.96 nerves-metal-detector.org 1
137.66.20.246 jakemiles.com 1
137.66.21.214 alive-project.com 1
137.66.21.219 starocean2.com 1
137.66.21.234 minne.london 1
137.66.21.63 betton.digital 1
137.66.20.133 drinkarmando.ca 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
137.66.21.203 AS40509 Fly.io, Inc. 0.09ms from Osasco, BR
137.66.20.113 AS40509 Fly.io, Inc. 0.09ms 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
195.88.136.7 AS48997 Stichting Zorgring Noord Holland Noord 0.81ms from Amsterdam, NL
149.72.255.55 AS11377 SendGrid, Inc. 0.38ms from Ashburn, US
44.230.71.151 AS16509 Amazon.com, Inc. 0.13ms from Boardman, US
122.151.245.103 AS9443 Vocus Retail 1.91ms from Brisbane, AU
186.101.225.199 AS27947 Telconet S.A 2.04ms from Guayaquil, EC
178.142.111.135 AS9145 EWE TEL GmbH 3.53ms from Hamburg, DE
90.202.200.199 AS5607 Sky UK Limited 2.51ms from London, GB
181.140.226.119 AS13489 UNE EPM TELECOMUNICACIONES S.A. 7.94ms from Medellin, CO
213.205.28.55 AS8612 Tiscali Italia S.P.A. 0.27ms from Milan, IT
23.252.148.183 AS62886 OMNITEL COMMUNICATIONS 5.64ms from Minneapolis, US
185.217.128.71 AS56694 LLC Smart Ape 0.75ms from Moscow, RU
122.243.169.247 AS4134 CHINANET-BACKBONE 8.39ms from Ningbo, CN
200.144.190.87 AS28571 UNIVERSIDADE DE SAO PAULO 2.17ms from Osasco, BR
60.225.80.71 AS1221 Telstra Limited 1.43ms from Perth, AU
68.108.197.103 AS22773 Cox Communications Inc. 1.00ms from Phoenix, US
182.230.205.39 AS17858 LG POWERCOMM 3.80ms from Seoul, KR
52.187.229.23 AS8075 Microsoft Corporation 0.74ms from Sydney, AU
77.46.34.119 AS41931 EURONET NORBERT SANIEWSKI SPOLKA JAWNA 3.25ms from Warsaw, PL
177.129.147.103 AS263040 HYPER TELECOM 1.55ms from Brasilia, BR
125.64.50.7 AS4134 CHINANET-BACKBONE 8.57ms from Chengdu, CN
45.20.170.151 AS7018 AT&T Enterprises, LLC 3.50ms from Chicago, US
98.250.31.7 AS7922 Comcast Cable Communications, LLC 11.52ms from Flint, US
115.19.172.55 AS4766 Korea Telecom 7.80ms from Incheon, KR
104.16.156.135 AS13335 Cloudflare, Inc. 0.10ms from Lisbon, PT
94.236.55.231 AS15395 Rackspace Ltd. 1.70ms from London, GB

Traceroute

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

$
traceroute -a -n -q1 -f2 137.66.21.33
traceroute to 137.66.21.33 (137.66.21.33): 64 hops max, 52 byte packets
2 [AS7195] 200.25.56.11 0.845 ms
3 [AS40509] 137.66.21.33 0.123 ms
Measurement taken from IPinfo ProbeNet in Osasco, BR
On

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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