fly.io
We found 87 subdomains of fly.io in certificate transparency logs, passive DNS and DNS brute force; 25 resolve right now, including api.fly.io, app.fly.io and auth.fly.io. fly.io is registered with MarkMonitor Inc. since 2004-07-15 and expires 2033-07-15. Its SSL certificate from Let's Encrypt expires in 54 days. For email it has an SPF record, DMARC set to quarantine and DKIM keys on 4 common selectors.
- Registration
- MarkMonitor Inc.Since 2004-07-15 · expires 2033-07-15
- SSL certificate
- 54 days leftLet's Encrypt
- Subdomains
- 25 live87 discovered in total
- Email authentication
- SPF, DMARC, DKIMDMARC policy: quarantine
DNS records
6 of 7 types| A1 |
|
| AAAA1 |
|
| MX5 |
|
| TXT12 |
Show all 12
|
| NS4 |
|
| CAA | No CAA records |
| SOA1 |
|
Live lookup, cached up to 5 min.
WHOIS / RDAP
via fallback:https://rdap.identitydigital.services/rdap/- Registrar
- MarkMonitor Inc.
- Registered
- 2004-07-15
- Expires
- 2033-07-15
- Last updated
- 2026-08-12
- Nameservers
- ns479.hosted.flydns.netns967.hosted.flydns.netns1077.hosted.flydns.netns1970.hosted.flydns.net
- Status
- client delete prohibitedclient transfer prohibitedclient update prohibited
RDAP with port-43 WHOIS fallback, cached up to 1 h.
SSL certificate
Valid, 54 days left- Issuer
- Let's EncryptCN=YE2,O=Let's Encrypt,C=US
- Subject
- fly.io
- Valid from
- 2026-09-02 23:48 UTC
- Valid until
- 2026-12-01 23:48 UTC
- Serial number
- 558840220263172937285098402317459853159564
- Names covered (1)
- fly.io
Live TLS handshake on port 443, cached up to 6 h.
Subdomains
25 live · 87 discovered- analytics.fly.io66.241.124.249
- api.fly.io77.83.143.220
- app.fly.io77.83.143.220
- auth.fly.io66.241.124.22
- community.fly.io184.105.99.43
- docker-hub-mirror.fly.ioflyio-registry-mirror.fly.dev
- docs.fly.io162.159.143.13
- email.e.fly.io34.110.180.34
- email.mg.fly.io34.102.239.211
- fly.io37.16.18.81
- go.email.fly.io37.16.18.81
- go.news.fly.io37.16.18.81
- go.updates.fly.io37.16.18.81
- oidc.fly.io37.16.14.187
- portal.fly.io77.83.143.220
- posthog.fly.io66.241.124.56
- registry-iad.fly.io66.241.124.39
- registry.fly.io77.83.143.221
- registry2.fly.io213.188.208.4
- registry3.fly.io213.188.220.16
- sso.fly.io66.241.124.126
- status.fly.io13.226.209.100
- tokenizer.fly.io168.220.89.61
- web.fly.io213.188.208.54
- www.fly.iofly.io
No subdomains found.
62 more seen in CT logs and passive DNS that don't resolve now
- admin.fly.io
- api-canary.fly.io
- audiofiction-dev.redis.fly.io
- aws-lambda-example.fly.io
- backends.fly.io
- cached-s3-test.fly.io
- cert-prop-test.ecdsa.fly.io
- dawn-dust-9636.redis.fly.io
- dry-morning-9915.redis.fly.io
- ecdsa.fly.io
- edge-client-cert.fly.io
- featureupvote.fly.io
- filestore.fly.io
- future.fly.io
- gae.fly.io
- gcf.fly.io
- gcloud-iad.fly.io
- gcloud-lon.fly.io
- gcloud-staging.fly.io
- gcloud-us-west.fly.io
- gcloud.fly.io
- get.fly.io
- git.fly.io
- glitch.fly.io
- google-cdn-test.fly.io
- grafana.fly.io
- gravitas.fly.io
- imaginary.fly.io
- js-test.fly.io
- js.fly.io
- kdavis-hello-fly.redis.fly.io
- litefs-staging.fly.io
- litefs.fly.io
- magick.fly.io
- ns1.fly.io
- ns2.fly.io
- ns3.fly.io
- ns4.fly.io
- ns5.fly.io
- ns6.fly.io
- ops.fly.io
- packet.fly.io
- play.fly.io
- preview.fly.io
- registry-test.fly.io
- registry4.fly.io
- rusthealth.fly.io
- shw.io.edge.fly.io
- sslscan.fly.io
- test-cert-cleanup.ecdsa.fly.io
- test1.ecdsa.fly.io
- test2.ecdsa.fly.io
- test3.ecdsa.fly.io
- test4.ecdsa.fly.io
- testing-acmev2.fly.io
- uncached-s3-test.fly.io
- vpn.fly.io
- web2.fly.io
- with-client-cert.fly.io
- words.fly.io
- wormhole.fly.io
- your-app-name.fly.io
From CT logs, passive DNS (25+ sources) and brute-force. Live means it resolves now.
Email security
Show public keys
DKIM checked on 29 common selectors; custom ones can't be discovered. Cached up to 1 h.
Got an email from fly.io asking you to change bank details? Check it before you pay
Get this report as JSON
One call returns everything on this page. Each section is also its own endpoint.
curl "https://domain-intelligence-api.p.rapidapi.com/lookup/fly.io" \
-H "X-RapidAPI-Host: domain-intelligence-api.p.rapidapi.com" \
-H "X-RapidAPI-Key: YOUR_RAPIDAPI_KEY"
import requests
r = requests.get(
"https://domain-intelligence-api.p.rapidapi.com/lookup/fly.io",
headers={
"X-RapidAPI-Host": "domain-intelligence-api.p.rapidapi.com",
"X-RapidAPI-Key": "YOUR_RAPIDAPI_KEY",
},
timeout=30,
)
print(r.json())
// Node 18+ (built-in fetch)
const res = await fetch(
"https://domain-intelligence-api.p.rapidapi.com/lookup/fly.io",
{ headers: {
"X-RapidAPI-Host": "domain-intelligence-api.p.rapidapi.com",
"X-RapidAPI-Key": "YOUR_RAPIDAPI_KEY",
} }
);
console.log(await res.json());
<?php
$ch = curl_init("https://domain-intelligence-api.p.rapidapi.com/lookup/fly.io");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
"X-RapidAPI-Host: domain-intelligence-api.p.rapidapi.com",
"X-RapidAPI-Key: YOUR_RAPIDAPI_KEY",
]);
$data = json_decode(curl_exec($ch), true);
print_r($data);
?wait=1 waits for every subdomain source to finish