mail.twf-tec.de - robtex.com

mail.twf-tec.de

DNSSEC⚠️ Not signed
A2606:4700:3034::6815:3480🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:c787🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.52.128Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.199.135🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.52.128, 172.67.199.135
IPv6 hints2606:4700:3034::6815:3480, 2606:4700:3037::ac43:c787
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=71, name=cloudflare-ech.com

twf-tec.de

DNSSEC⚠️ Not signed
A2606:4700:3034::6815:3480🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:c787🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.52.128Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.199.135🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSdax.ns.cloudflare.com ⭐
NSmay.ns.cloudflare.com
MXroute2.mx.cloudflare.net ⭐
MXroute3.mx.cloudflare.net(69)
MXroute1.mx.cloudflare.net(85)
TXT63d9362c0a1882350ff3ee07ad3b7dd3efb51ed6
TXTv=spf1 include:_spf.mx.cloudflare.net ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.52.128, 172.67.199.135
IPv6 hints2606:4700:3034::6815:3480, 2606:4700:3037::ac43:c787
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=71, name=cloudflare-ech.com
SOAdax.ns.cloudflare.comdns@cloudflare.com serial=2405122083

Previously MX for

twf-tec.de

Same first word

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DNS History

10 records (4 active, 6 former)

20162017201820192020202120222023202420252026NSns1.sedoparking.comns2.sedoparking.comMXlocalhostA104.21.52.128172.67.199.1352606:4700:3034::6815:34802606:4700:3037::ac43:c78764.190.63.22281.169.142.14585.214.53.206
○NSns1.sedoparking.com2026-07-18 → 2026-07-18 · 1 obs
○ 2026-07-18 11:44:10
○NSns2.sedoparking.com2026-07-18 → 2026-07-18 · 1 obs
○ 2026-07-18 11:44:10
○MXlocalhost2026-07-18 → 2026-07-18 · 1 obs
○ 2026-07-18 11:44:10
●A104.21.52.1282026-07-18 → 2026-07-18 · 2 obs
○ 2016-09-16 17:46:44
● 2026-07-18 11:44:10
●A172.67.199.1352026-07-18 → 2026-07-18 · 2 obs
○ 2016-09-16 17:46:44
● 2026-07-18 11:44:10
●A2606:4700:3034::6815:34802026-07-18 → 2026-07-18 · 2 obs
○ 2016-09-16 17:46:44
● 2026-07-18 11:44:10
●A2606:4700:3037::ac43:c7872026-07-18 → 2026-07-18 · 2 obs
○ 2016-09-16 17:46:44
● 2026-07-18 11:44:10
○A64.190.63.2222026-07-18 → 2026-07-18 · 1 obs
○ 2026-07-18 11:44:10
○A81.169.142.1452015-05-19 → 2016-03-24 · 4 obs
● 2015-05-19 22:39:10
● 2016-03-24 20:25:42
○ 2016-09-16 17:46:44
○ 2026-07-18 11:44:10
○A85.214.53.2062016-09-16 → 2016-09-16 · 3 obs
○ 2016-03-24 20:25:42
● 2016-09-16 17:46:44
○ 2026-07-18 11:44:10

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dea.nic.de, f.nic.de, z.nic.de-
twf-tec.dedax.ns.cloudflare.com, may.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.195.133

NS records: dax.ns.cloudflare.com, may.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for twf-tec.de (unsigned zone)

⏱️ Timing

Total: 1472ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.52.128, 172.67.199.135
AAAA22606:4700:3037::ac43:c787, 2606:4700:3034::6815:3480
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

mail.twf-tec.de has four IP addresses: 104.21.52.128, 172.67.199.135, 2606:4700:3034::6815:3480 and 2606:4700:3037::ac43:c787.

insidercraft.com, gzgj.org.cn, bbconstruction.mt plus two other host names have IP numbers in common with mail.twf-tec.de.