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:      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 882 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 salesbooksreads.com 797
137.66.20.44 killington.com 21
137.66.21.179 noxstorage.es 10
137.66.21.105 dddice.com 5
137.66.21.87 tovineyard.com 4
137.66.20.139 studyboosterai.com 3
137.66.20.249 confuzzle.app 2
137.66.21.6 sermons.tech 2
137.66.20.226 peril.jp 2
137.66.21.188 hausgedacht.de 2
137.66.21.219 starocean2.com 1
137.66.20.238 knopic.app 1
137.66.20.133 drinkarmando.ca 1
137.66.20.80 testimonialtiger.com 1
137.66.21.60 bargainbooom.com 1
137.66.20.212 outlands.vip 1
137.66.20.225 grubplot.com 1
137.66.21.234 minne.london 1
137.66.21.43 hutsee.com 1
137.66.21.13 jnsgr.uk 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
137.66.21.120 AS40509 Fly.io, Inc. 0.10ms from Osasco, BR
137.66.20.75 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
116.196.105.119 AS23724 IDC, China Telecommunications Corporation 3.76ms from Beijing, CN
101.43.204.23 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.73ms from Beijing, CN
46.142.121.87 AS8881 1&1 Versatel GmbH 1.71ms from Berlin, DE
47.209.245.215 AS19108 Optimum 13.23ms from Dallas, US
81.60.243.247 AS12430 VODAFONE ESPANA S.A.U. 15.67ms from Madrid, ES
101.178.19.23 AS1221 Telstra Limited 5.27ms from Melbourne, AU
46.235.141.119 AS197589 Alfanews S.r.l. 8.22ms from Milan, IT
24.230.205.167 AS11290 Cogeco Connexion inc 6.03ms from Montreal, CA
5.99.58.119 AS3269 Telecom Italia S.p.A. 7.57ms from Naples, IT
173.70.12.151 AS701 Verizon Business 1.14ms from New York City, US
80.3.137.151 AS5089 Virgin Media Limited 7.84ms from Portsmouth, GB
69.104.99.119 AS7018 AT&T Enterprises, LLC 1.57ms from San Jose, US
59.14.22.231 AS4766 Korea Telecom 2.26ms from Seoul, KR
110.11.95.135 AS9318 SK Broadband Co Ltd 1.52ms from Seoul, KR
62.116.232.151 AS16117 Gavle Energi AB 3.34ms from Stockholm, SE
13.159.137.7 AS16509 Amazon.com, Inc. 0.26ms from Tokyo, JP
105.159.121.231 AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM 2.03ms from Casablanca, MA
107.208.99.167 AS7018 AT&T Enterprises, LLC 1.91ms from Dallas, US
85.110.182.199 AS9121 Turk Telekomunikasyon Anonim Sirketi 14.65ms from Denizli, TR
125.78.255.23 AS4134 CHINANET-BACKBONE 3.58ms from Fuzhou, CN
80.135.251.215 AS3320 Deutsche Telekom AG 2.06ms from Hamburg, DE
79.148.233.71 AS3352 TELEFONICA DE ESPANA S.A.U. 1.54ms from Madrid, ES
100.37.166.183 AS701 Verizon Business 2.75ms from New York City, US
66.172.119.199 AS13370 Ziply Fiber 1.28ms from Quincy, US
180.27.81.23 AS4713 NTT DOCOMO BUSINESS,Inc. 7.32ms 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 -f3 137.66.20.75
traceroute to 137.66.20.75 (137.66.20.75): 64 hops max, 52 byte packets
4 [AS40509] 137.66.20.75 0.148 ms
Measurement taken from IPinfo ProbeNet in Sydney, AU
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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