1. All IP Ranges
  2. 66.0.0.0/8
  3. 66.51.0.0/16
  4. AS40509  | 66.51.120.0/23

66.51.120.0/23

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-66-51-120-0-1
OrgID:          FLYIO
Parent:         NET-66-0-0-0-0
NetName:        FLYIO
NetRange:       66.51.120.0 - 66.51.127.255
NetType:        allocation
RegDate:        2021-12-06
Updated:        2021-12-06
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:        ops@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:      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

Nearby Ranges

BGP prefixes that overlap with 66.51.0.0/16

Range ASN Company Num of IPs
66.51.144.0/20 AS12129 123.Net, Inc. 4,096
66.51.0.0/20 AS13649 Flexential Colorado Corp. 4,096
66.51.176.0/20 AS19058 Illinois Rural Telecommunication Co. 4,096
66.51.128.0/20 AS25668 Cipherkey Exchange Corp. 4,096
66.51.48.0/20 AS3064 Level 3 Parent, LLC 4,096
66.51.240.0/20 AS33554 Neutral Data Centers Corp. 4,096
66.51.48.0/20 AS3356 Level 3 Parent, LLC 4,096
66.51.32.0/20 AS393924 RigNet Inc 4,096
66.51.0.0/20 AS394526 Flexential Colorado Corp. 4,096
66.51.224.0/20 AS400439 Consolidated Telcom 4,096
66.51.16.0/21 AS13845 eStruxture Data Centers Inc. 2,048
66.51.24.0/21 AS13649 Flexential Colorado Corp. 2,048
66.51.100.0/22 AS401319 TensorWave Inc. 1,024
66.51.116.0/22 AS396919 Shadow 1,024
66.51.192.0/22 AS19766 Dryden Fiber 1,024
66.51.96.0/22 AS198990 Pine Hosting LTD 1,024
66.51.112.0/22 AS396919 Shadow 1,024
66.51.108.0/22 AS13911 Tera-byte Dot Com Inc. 1,024
66.51.148.0/24 AS398351 May Mobility, Inc 256
66.51.246.0/24 AS46478 Castor Networks 256
66.51.173.0/24 AS18986 Corporate Web Solutions 256

Hosted domains

There are 33 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
66.51.120.162 tattooscouts.com 2
66.51.121.67 kristabourgeois.com 1
66.51.120.176 johnmosesman.com 1
66.51.121.251 vttmud.com 1
66.51.120.245 semanti.com 1
66.51.121.245 yheraldbautista.com 1
66.51.121.247 notebinding.com 1
66.51.120.12 4posts.pro 1
66.51.120.144 heila.dev 1
66.51.121.105 foreverbanking.co.za 1
66.51.121.122 patriotlibertyalliance.com 1
66.51.120.206 elixir-companies.com 1
66.51.120.2 syswork.io 1
66.51.121.103 axe-wod.dev 1
66.51.121.254 redir.ing 1
66.51.120.23 kintex.app 1
66.51.120.218 exchangeflow.io 1
66.51.121.74 isaandjames.ch 1
66.51.121.40 cuttime.dev 1
66.51.121.208 usewidgetform.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
66.51.121.0 AS40509 Fly.io, Inc. 0.10ms from Osasco, BR
66.51.120.44 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
69.251.46.119 AS7922 Comcast Cable Communications, LLC 7.56ms from Ashburn, US
108.246.31.215 AS7018 AT&T Enterprises, LLC 3.41ms from Atlanta, US
119.54.45.167 AS4837 CHINA UNICOM China169 Backbone 1.24ms from Changchun, CN
162.194.142.7 AS7018 AT&T Enterprises, LLC 9.22ms from Chicago, US
52.28.191.199 AS16509 Amazon.com, Inc. 0.15ms from Frankfurt am Main, DE
220.71.151.103 AS4766 Korea Telecom 5.39ms from Incheon, KR
122.171.9.23 AS24560 Bharti Airtel Ltd., Telemedia Services 13.20ms from Kolkata, IN
85.138.85.247 AS2860 NOS COMUNICACOES, S.A. 10.34ms from Lisbon, PT
1.123.199.247 AS1221 Telstra Limited 8.91ms from Melbourne, AU
187.145.223.135 AS8151 UNINET 1.66ms from Mexico City, MX
98.15.113.199 AS12271 Charter Communications Inc 3.73ms from New York City, US
94.24.31.231 AS39305 Groupe convergence.com SAS 0.46ms from Paris, FR
150.158.47.215 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.24ms from Shanghai, CN
126.41.207.151 AS17676 SoftBank Corp. 4.68ms from Tokyo, JP
199.26.114.231 AS394117 Encore Communications, Inc 1.02ms from Tulsa, US
85.4.171.55 AS3303 Swisscom (Switzerland) Ltd 2.57ms from Zuerich, CH
79.166.118.87 AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA 1.04ms from Athens, GR
91.178.67.119 AS5432 Proximus NV 1.22ms from Brussels, BE
65.114.114.7 AS209 CenturyLink Communications, LLC 2.34ms from Chicago, US
18.223.136.103 AS16509 Amazon.com, Inc. 1.05ms from Columbus, US
73.26.111.215 AS7922 Comcast Cable Communications, LLC 9.16ms from Denver, US
165.154.24.7 AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED 1.51ms from Hong Kong, HK
136.32.81.71 AS16591 Google Fiber Inc. 0.75ms from Kansas City, US
202.188.238.7 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 1.02ms from Kuala Lumpur, MY
80.6.34.135 AS5089 Virgin Media Limited 3.53ms 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 66.51.121.221
traceroute to 66.51.121.221 (66.51.121.221): 64 hops max, 52 byte packets
2 [AS7195] 200.25.56.11 1.699 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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