mi6.gov.uk
● HTTP 200
→ https://www.sis.gov.uk/
🛡 Security Posture — 4/7 checks passing
HTTPS
✓ Yes
HSTS
✓ Yes
SPF
fail
DMARC
✗ No
robots.txt
✗ No
security.txt
✗ No
sitemap.xml
✓ Yes
🌐 DNS Records
| A | 172.65.90.16 |
| 172.65.90.17 | |
| 172.65.90.18 | |
| 172.65.90.19 | |
| AAAA | 2606:4700:78::90:0:100 |
| 2606:4700:78::90:0:101 | |
| 2606:4700:78::90:0:102 | |
| 2606:4700:78::90:0:103 | |
| NS | keanu.ns.cloudflare.com. |
| sreeni.ns.cloudflare.com. | |
| TXT | "v=spf1 -all" (SPF) |
| "_xwt26yllj3n06miq6kivsqzydh0sb4k" | |
| "_xy4oy2f9ohvty4guc4ut4rsy74jbk05" | |
| SOA | keanu.ns.cloudflare.com. dns.cloudflare.com. 2407016894 10000 2400 604800 1800 |
📋 WHOIS
No WHOIS data available
⚡ HTTP Details
Status 200
Server cloudflare
DNS Host Cloudflare
Final URL https://www.sis.gov.uk/
Content-Type text/html
📧SPF Record — policy: fail
v=spf1 -all
Data collected: 21 June 2026