37.16.20.0/23

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-37-16-0-0-1
OrgID:          FLYIO
Parent:         NET-37-0-0-0-1
NetName:        FLYIO
NetRange:       37.16.0.0 - 37.16.31.255
NetType:        allocation
RegDate:        2021-12-21
Updated:        2021-12-21
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 113 domain names hosted across 44 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
37.16.20.156	flex-tools.at	43
37.16.21.139	aurumplanet.com	16
37.16.20.196	rohaninnovation.com	3
37.16.20.16	uphillapp.com	3
37.16.21.211	permakeep.io	2
37.16.21.5	mattclough.com	2
37.16.20.126	castlebirds.com	2
37.16.20.180	pressvalue.fr	2
37.16.20.195	locavore.app	2
37.16.20.60	johnkeanu.com	1
37.16.21.46	quickplay.ai	1
37.16.21.127	newsummary.com	1
37.16.20.117	superlink.so	1
37.16.20.24	marichplan.com	1
37.16.21.119	thailovely.app	1
37.16.20.198	nusign.co	1
37.16.21.221	chatbotcloud.org	1
37.16.20.52	arezer.com	1
37.16.21.217	joininvesty.com	1
37.16.20.139	tunnel.agency	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
37.16.21.2	AS40509 Fly.io, Inc.	`0.08ms` from Johannesburg, ZA
37.16.20.50	AS40509 Fly.io, Inc.	`0.08ms` from Rio de Janeiro, 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
20.123.216.167	AS8075 Microsoft Corporation	`1.26ms` from Amsterdam, NL
34.213.141.103	AS16509 Amazon.com, Inc.	`0.13ms` from Boardman, US
170.155.23.23	AS27967 Gobernacion de la Provincia de Buenos Aires	`2.02ms` from Buenos Aires, AR
196.75.121.199	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`5.61ms` from Casablanca, MA
72.31.115.103	AS33363 Charter Communications, Inc	`4.92ms` from Chicago, US
130.0.49.87	AS6876 TENET Scientific Production Enterprise LLC	`3.38ms` from Chisinau, MD
92.115.196.23	AS8926 Moldtelecom SA	`6.04ms` from Chisinau, MD
24.144.1.87	AS12231 Conway Corporation	`9.21ms` from Dallas, US
134.175.136.151	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.03ms` from Guangzhou, CN
90.202.167.247	AS5607 Sky UK Limited	`1.71ms` from London, GB
156.35.122.23	AS766 RedIRIS Autonomous System	`6.93ms` from Madrid, ES
79.18.199.55	AS3269 Telecom Italia S.p.A.	`14.47ms` from Milan, IT
54.157.85.135	AS14618 Amazon.com, Inc.	`0.17ms` from Reston, US
220.245.222.39	AS7545 TPG Telecom Limited	`1.07ms` from Sydney, AU
111.244.34.247	AS3462 Data Communication Business Group	`1.96ms` from Taichung, TW
1.193.175.247	AS4134 CHINANET-BACKBONE	`7.08ms` from Zhengzhou, CN
39.96.147.199	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`3.45ms` from Beijing, CN
213.119.175.119	AS6848 Telenet BV	`8.77ms` from Brussels, BE
114.117.196.199	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.19ms` from Chongqing, CN
109.59.146.167	AS44034 Hi3G Access AB	`5.90ms` from Copenhagen, DK
189.30.198.119	AS8167 V tal	`9.49ms` from Curitiba, BR
47.144.251.119	AS5650 Frontier Communications of America, Inc.	`3.56ms` from Los Angeles, US
97.182.168.199	AS6167 Verizon Business	`16.78ms` from Los Angeles, US
153.161.255.87	AS4713 NTT Communications Corporation	`2.70ms` from Osaka, JP
189.164.35.23	AS8151 UNINET	`5.35ms` 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 37.16.21.117

traceroute to 37.16.21.117 (37.16.21.117): 64 hops max, 52 byte packets

2 [AS7195] 200.25.52.193 160.353 ms

3 [AS40509] 37.16.21.117 0.115 ms

Measurement taken from

IPinfo ProbeNet in Rio de Janeiro, BR

On August 28th 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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