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:      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

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
66.51.224.0/20 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
66.51.116.0/22 AS396919 Shadow 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
66.51.100.0/22 AS401319 TensorWave Inc. 1,024
66.51.192.0/22 AS19766 Dryden Fiber 1,024
66.51.173.0/24 AS18986 Corporate Web Solutions 256
66.51.246.0/24 AS46478 Castor Networks 256
66.51.148.0/24 AS398351 May Mobility, Inc 256
66.51.151.0/24 AS22585 MVS Cloud Inc. 256

Hosted domains

There are 34 domain names hosted across 33 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 alapup.com 2
66.51.121.247 notebinding.com 1
66.51.121.40 cuttime.dev 1
66.51.120.144 heila.dev 1
66.51.120.245 semanti.com 1
66.51.120.12 4posts.pro 1
66.51.121.196 ferme-amillieres.fr 1
66.51.120.170 mnyou.org 1
66.51.121.215 tailwindgym.com 1
66.51.121.207 homusc.com 1
66.51.120.206 elixir-companies.com 1
66.51.120.2 syswork.io 1
66.51.121.248 askmedaily.co.uk 1
66.51.120.218 exchangeflow.io 1
66.51.121.208 usewidgetform.com 1
66.51.120.221 pkdk.cc 1
66.51.121.251 vttmud.com 1
66.51.120.176 johnmosesman.com 1
66.51.121.103 axe-wod.dev 1
66.51.120.23 kintex.app 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
66.51.120.223 AS40509 Fly.io, Inc. 0.09ms from Osasco, BR
66.51.121.198 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
85.214.161.55 AS6724 Strato GmbH 0.51ms from Berlin, DE
20.96.209.55 AS8075 Microsoft Corporation 0.29ms from Boydton, US
98.245.218.39 AS7922 Comcast Cable Communications, LLC 8.96ms from Denver, US
36.1.250.23 AS4134 CHINANET-BACKBONE 2.62ms from Haikou, CN
114.237.18.71 AS4134 CHINANET-BACKBONE 8.43ms from Huai'an, CN
114.124.40.7 AS23693 PT. Telekomunikasi Selular 0.51ms from Jakarta, ID
90.249.161.215 AS5378 Vodafone Limited 5.58ms from London, GB
51.9.162.23 AS6871 Plusnet 4.69ms from London, GB
23.193.136.103 AS16625 Akamai Technologies, Inc. 0.67ms from Los Angeles, US
84.33.119.39 AS35612 EOLO S.p.A. 2.89ms from Milan, IT
135.132.17.71 AS46450 Pilot Fiber, Inc. 1.28ms from New York City, US
84.142.183.231 AS3320 Deutsche Telekom AG 5.64ms from Nuernberg, DE
86.244.226.119 AS3215 Orange S.A. 2.73ms from Paris, FR
54.224.232.215 AS14618 Amazon.com, Inc. 0.22ms from Reston, US
79.35.177.199 AS3269 Telecom Italia S.p.A. 4.14ms from Rome, IT
77.168.53.87 AS1136 KPN B.V. 1.61ms from Amsterdam, NL
108.246.31.215 AS7018 AT&T Enterprises, LLC 3.65ms from Atlanta, US
62.10.64.199 AS8070 Microsoft Corporation 0.54ms from Boydton, US
178.40.13.119 AS6855 Slovak Telekom, a.s. 7.49ms from Bratislava, SK
186.128.72.119 AS22927 Telefonica de Argentina 1.99ms from Buenos Aires, AR
148.70.210.87 AS45090 Shenzhen Tencent Computer Systems Company Limited 0.87ms from Chengdu, CN
162.194.142.7 AS7018 AT&T Enterprises, LLC 8.80ms from Chicago, US
202.214.183.151 AS2497 Internet Initiative Japan Inc. 1.08ms from Osaka, JP
34.90.22.119 AS396982 Google LLC 0.12ms from Oudeschip, NL
189.167.3.231 AS8151 UNINET 8.20ms from Santiago de Queretaro, MX

Traceroute

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

$
traceroute -a -n -q1 -f2 66.51.121.124
traceroute to 66.51.121.124 (66.51.121.124): 64 hops max, 52 byte packets
2 [AS7195] 200.25.56.11 9.003 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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