mail.seitcheck.de - robtex.com

mail.seitcheck.de

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:97e8🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:c4e🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.12.78Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.151.232🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/2 ✓ hints match
IPv4 hints104.21.12.78, 172.67.151.232
IPv6 hints2606:4700:3033::ac43:97e8, 2606:4700:3037::6815:c4e
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=211, name=cloudflare-ech.com

seitcheck.de

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:97e8🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:c4e🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.12.78Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.151.232🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSmegan.ns.cloudflare.com ⭐
NSmike.ns.cloudflare.com
MXw01d6362.kasserver.com ⭐
TXTv=spf1 ip4:85.13.165.61 mx a -all
HTTPSHTTP/2 ✓ hints match
IPv4 hints104.21.12.78, 172.67.151.232
IPv6 hints2606:4700:3033::ac43:97e8, 2606:4700:3037::6815:c4e
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=211, name=cloudflare-ech.com
SOAmegan.ns.cloudflare.comdns@cloudflare.com serial=2402963668

Previously MX for

seitcheck.de

Same first word

mail.pixolino.com
mail.ug
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DNS History

7 records (4 active, 3 former)

20162017201820192020202120222023202420252026A104.21.12.78172.67.151.2322606:4700:3033::ac43:97e82606:4700:3037::6815:c4e5.1.81.21185.13.149.20685.13.165.61
●A104.21.12.782026-04-14 → 2026-04-29 · 3 obs
○ 2016-07-18 09:58:18
● 2026-04-14 16:29:02
● 2026-04-29 17:22:46
●A172.67.151.2322026-04-14 → 2026-04-29 · 3 obs
○ 2016-07-18 09:58:18
● 2026-04-14 16:29:02
● 2026-04-29 17:22:46
●A2606:4700:3033::ac43:97e82026-04-14 → 2026-04-29 · 3 obs
○ 2016-07-18 09:58:18
● 2026-04-14 16:29:02
● 2026-04-29 17:22:46
●A2606:4700:3037::6815:c4e2026-04-14 → 2026-04-29 · 3 obs
○ 2016-07-18 09:58:18
● 2026-04-14 16:29:02
● 2026-04-29 17:22:46
○A5.1.81.2112016-03-18 → 2016-07-18 · 5 obs
○ 2015-12-19 12:45:12
● 2016-03-18 02:43:44
● 2016-07-18 09:58:18
○ 2026-04-14 16:29:02
○ 2026-04-29 17:22:46
○A85.13.149.2062015-08-18 → 2015-12-19 · 4 obs
● 2015-08-18 12:04:38
● 2015-12-19 12:45:12
○ 2016-03-18 02:43:44
○ 2026-04-29 17:22:46
○A85.13.165.612026-04-14 → 2026-04-29 · 2 obs
○ 2026-04-14 16:29:02
○ 2026-04-29 17:22:46

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
des.de.net, n.de.net, z.nic.de, f.nic.de...-
seitcheck.demike.ns.cloudflare.com, megan.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.35.63

NS records: mike.ns.cloudflare.com, megan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for seitcheck.de (unsigned zone)

⏱️ Timing

Total: 869ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.151.232, 104.21.12.78
AAAA22606:4700:3037::6815:c4e, 2606:4700:3033::ac43:97e8
HTTPS1{"priority":1,"target":".","alpn":["h2"]

Analysis

IP Addresses

mail.seitcheck.de points to four IP numbers: 2606:4700:3033::ac43:97e8, 2606:4700:3037::6815:c4e, 104.21.12.78 and 172.67.151.232.

Other host names, for instance fyrewall.com.br, resgataronline.digital, learnfables.com, www.l-i-e.com and afrktrd.xyz share IP numbers with mail.seitcheck.de.