`mail.michaelruffing.de`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:3382^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3032::ac43:b49d^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.51.130^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.180.157^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.51.130, 172.67.180.157
		IPv6	2606:4700:3031::6815:3382, 2606:4700:3032::ac43:b49d

`michaelruffing.de`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:3382^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3032::ac43:b49d^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.51.130^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.180.157^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`edna.ns.cloudflare.com` ⭐
NS	`rommy.ns.cloudflare.com`
TXT	`google-site-verification=AMI-6UkEr61cPpL8Awc1c5twM2e-u4j2Cg4yNHK_T2o`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.51.130, 172.67.180.157
		IPv6	2606:4700:3031::6815:3382, 2606:4700:3032::ac43:b49d
SOA	`edna.ns.cloudflare.com`dns@cloudflare.com serial=2397976834

Previously MX for

michaelruffing.de

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DNS History

9 records (4 active, 5 former)

●A104.21.51.1302026-03-28 → 2026-03-28 · 2 obs

○ 2026-03-06 12:40:08
● 2026-03-28 11:29:08

○A109.237.133.2132015-12-01 → 2016-07-19 · 5 obs

○ 2015-08-06 06:52:02
● 2015-12-01 13:46:26
● 2016-07-19 00:06:22
○ 2026-03-06 12:40:08
○ 2026-03-28 11:29:08

○A172.64.80.12026-03-06 → 2026-03-06 · 3 obs

○ 2016-07-19 00:06:22
● 2026-03-06 12:40:08
○ 2026-03-28 11:29:08

●A172.67.180.1572026-03-28 → 2026-03-28 · 2 obs

○ 2026-03-06 12:40:08
● 2026-03-28 11:29:08

○A2606:4700:130:436c:6f75:6466:6c61:72652026-03-06 → 2026-03-06 · 3 obs

○ 2016-07-19 00:06:22
● 2026-03-06 12:40:08
○ 2026-03-28 11:29:08

●A2606:4700:3031::6815:33822026-03-28 → 2026-03-28 · 2 obs

○ 2026-03-06 12:40:08
● 2026-03-28 11:29:08

●A2606:4700:3032::ac43:b49d2026-03-28 → 2026-03-28 · 2 obs

○ 2026-03-06 12:40:08
● 2026-03-28 11:29:08

○A5.44.111.112026-03-06 → 2026-03-28 · 2 obs

○ 2026-03-06 12:40:08
○ 2026-03-28 11:29:08

○A94.101.38.342015-08-06 → 2015-08-06 · 3 obs

● 2015-08-06 06:52:02
○ 2015-12-01 13:46:26
○ 2026-03-28 11:29:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
michaelruffing.de	rommy.ns.cloudflare.com, edna.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.35.20

NS records: rommy.ns.cloudflare.com, edna.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for michaelruffing.de (unsigned zone)

⏱️ Timing

Total: 542ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.180.157, 104.21.51.130`
AAAA	2	`2606:4700:3032::ac43:b49d, 2606:4700:3031::6815:3382`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

Analysis

IP Addresses

mail.michaelruffing.de resolves to four IP numbers: 2606:4700:3031::6815:3382, 2606:4700:3032::ac43:b49d, 104.21.51.130 and 172.67.180.157.

other host names for instance cuan.us, sensational77j.com, jquery-framework.com, cn.swish.ink and logisticsjunction.com share IP numbers with mail.michaelruffing.de.

mail.michaelruffing.de - robtex.com