`mail.programm21.de`

DNSSEC	⚠️ Not signed
A	104.21.20.171^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.193.60^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.20.171, 172.67.193.60
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=155, name=cloudflare-ech.com

`programm21.de`

DNSSEC	⚠️ Not signed
A	104.21.20.171^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.193.60^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`ashley.ns.cloudflare.com` ⭐
NS	`mustafa.ns.cloudflare.com`
MX	`w00a9231.kasserver.com` ⭐
TXT	`ahrefs-site-verification_2bb82dfebb925c222e7f99fa0c5542e621ddd54055f9f2f74625...`
TXT	`facebook-domain-verification=5e5tmugib2hazl18nvdiflrk4r2z7l`
TXT	`firebase=programm21-e93d8`
TXT	`google-site-verification=_SwR7CzPBjMfcXD8Yq72lJRVWmkGQ4Sl3wwYRdspbn0`
TXT	`tl7OuPz75Spaop6kYuv24ktdH/jwW8tUlia8iOTT5xg=`
TXT	`v=spf1 include:_spf.firebasemail.com include:amazonses.com ?all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.20.171, 172.67.193.60
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=155, name=cloudflare-ech.com
SOA	`ashley.ns.cloudflare.com`dns@cloudflare.com serial=2410848225

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DNS History

6 records (2 active, 4 former)

○MXmxlb.ispgateway.de2015-07-13 → 2016-05-07 · 4 obs

● 2015-07-13 13:36:48
● 2016-05-07 14:26:38
○ 2026-04-09 06:55:50
○ 2026-07-30 05:34:18

●A104.21.20.1712026-04-09 → 2026-07-30 · 5 obs

○ 2016-05-07 14:26:38
● 2026-04-09 06:55:50
○ 2026-07-08 04:42:40
● 2026-07-08 14:02:10
● 2026-07-30 05:34:18

○A134.119.25.2262015-07-13 → 2016-05-07 · 4 obs

● 2015-07-13 13:36:48
● 2016-05-07 14:26:38
○ 2026-04-09 06:55:50
○ 2026-07-30 05:34:18

●A172.67.193.602026-04-09 → 2026-07-30 · 5 obs

○ 2016-05-07 14:26:38
● 2026-04-09 06:55:50
○ 2026-07-08 04:42:40
● 2026-07-08 14:02:10
● 2026-07-30 05:34:18

○A188.114.96.02026-07-08 → 2026-07-08 · 4 obs

○ 2026-04-09 06:55:50
● 2026-07-08 04:42:40
○ 2026-07-08 14:02:10
○ 2026-07-30 05:34:18

○A188.114.97.02026-07-08 → 2026-07-08 · 4 obs

○ 2026-04-09 06:55:50
● 2026-07-08 04:42:40
○ 2026-07-08 14:02:10
○ 2026-07-30 05:34:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, z.nic.de, f.nic.de	-
programm21.de	mustafa.ns.cloudflare.com, ashley.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.71

NS records: mustafa.ns.cloudflare.com, ashley.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for programm21.de (unsigned zone)

⏱️ Timing

Total: 550ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.20.171, 172.67.193.60`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

Analysis

IP Addresses

mail.programm21.de has two IP addresses: 104.21.20.171 and 172.67.193.60

Among the host names that share IP numbers with mail.programm21.de are riverquode.com, newinfoleather.com, mail.uns.wtf and two others.

mail.programm21.de - robtex.com