tools / DNS & domains
DNS discovery
Scan a domain's apex records, email setup and subdomains in one go, with names from Certificate Transparency logs.
Records 20Subdomains 0Queries 104Time 0.1 sResolver Cloudflare 1.1.1.1
- MX none: this domain does not receive mail
- SPF published
- DMARC missing
- DKIM no common selector found (others may exist)
- MTA-STS not published
- TLS-RPT not published
Wildcard Any name under github.io resolves. Matching records are left out.
Apex
| Type | Value | TTL |
|---|---|---|
| A | 185.199.108.153 | 1 h |
| A | 185.199.109.153 | 1 h |
| A | 185.199.110.153 | 1 h |
| A | 185.199.111.153 | 1 h |
| NS | dns1.p05.nsone.net | 15 min |
| NS | dns2.p05.nsone.net | 15 min |
| NS | dns3.p05.nsone.net | 15 min |
| NS | dns4.p05.nsone.net | 15 min |
| NS | ns-1339.awsdns-39.org | 15 min |
| NS | ns-1622.awsdns-10.co.uk | 15 min |
| NS | ns-393.awsdns-49.com | 15 min |
| NS | ns-692.awsdns-22.net | 15 min |
| SOA | ns-1622.awsdns-10.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400 | 15 min |
| TXT | v=spf1 a -all | 1 h |
| CAA | 0 issue "digicert.com" | 1 h |
| CAA | 0 issue "letsencrypt.org" | 1 h |
| CAA | 0 issue "sectigo.com" | 1 h |
| CAA | 0 issuewild "digicert.com" | 1 h |
| CAA | 0 issuewild "letsencrypt.org" | 1 h |
| CAA | 0 issuewild "sectigo.com" | 1 h |
Email authentication
No SPF, DMARC, DKIM, MTA-STS or SRV records found.
Subdomains
None of the probed subdomains resolved.
Probed 24 common names. Certificate Transparency was off.
Zone file
; Zone file for github.io ; Exported by tools dns-discovery on 2026-10-30T08:50:38.189Z ; Resolver: Cloudflare 1.1.1.1 ; DNSSEC: not requested ; Wildcard detected (*.github.io); matching records filtered ; Discovered by probing common names, not a complete zone transfer ; $ORIGIN github.io. @ 3600 IN A 185.199.108.153 @ 3600 IN A 185.199.109.153 @ 3600 IN A 185.199.110.153 @ 3600 IN A 185.199.111.153 @ 900 IN NS dns1.p05.nsone.net. @ 900 IN NS dns2.p05.nsone.net. @ 900 IN NS dns3.p05.nsone.net. @ 900 IN NS dns4.p05.nsone.net. @ 900 IN NS ns-1339.awsdns-39.org. @ 900 IN NS ns-1622.awsdns-10.co.uk. @ 900 IN NS ns-393.awsdns-49.com. @ 900 IN NS ns-692.awsdns-22.net. @ 900 IN SOA ns-1622.awsdns-10.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400 @ 3600 IN TXT "v=spf1 a -all" @ 3600 IN CAA 0 issue "digicert.com" @ 3600 IN CAA 0 issue "letsencrypt.org" @ 3600 IN CAA 0 issue "sectigo.com" @ 3600 IN CAA 0 issuewild "digicert.com" @ 3600 IN CAA 0 issuewild "letsencrypt.org" @ 3600 IN CAA 0 issuewild "sectigo.com"
A snapshot from probing common names, not a zone transfer: records under other names are not here.