| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.66.229 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.209.25 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mx.stackmail.com | 185.151.28.67 | mx.stackmail.com | AS48254 20i Limited |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 104.21.66.229 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::ac43:d119 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::6815:42e5 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.66.229,172.67.209.25 ech=AEX+DQBBYQAgACCmp/any9JtEBBtEB93bp7JpA8Sxr8h487j1jx7j8hVCQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:d119,2606:4700:3037::6815:42e5 |
| TXT Record |
|---|
| v=spf1 include:spf.stackmail.com a mx -all |
| Policy | Record (covenstead.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.stackmail.com a mx -all |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2411019827 |
| Primary NS (MNAME) | oswald.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC | |
|---|---|---|---|---|
| 2026-07-31 23:48:08 | 1279ms | 2 NS 2 A 1 MX | 🔓 Insecure | View |
| 2026-07-21 03:59:37 | 1172ms | 2 NS 2 A 1 MX | 🔓 Insecure | View |
| 2026-06-23 00:01:13 | 2324ms | 2 NS 2 A 1 MX | 🔓 Insecure | View |
| 2026-06-22 06:16:05 | 1167ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-19 23:34:21 | 2821ms | 2 NS 2 A 1 MX | 🔓 Insecure | View |
| 2026-06-16 22:35:26 | 691ms | 2 NS 2 A 1 MX | 🔓 Insecure | View |