mail.db2tutorial.com - robtex.com

mail.db2tutorial.com

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:2175🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::ac43:a255🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.33.117Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.162.85🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.33.117, 172.67.162.85
IPv6 hints2606:4700:3033::6815:2175, 2606:4700:3033::ac43:a255
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=96, name=cloudflare-ech.com

db2tutorial.com

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:2175🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::ac43:a255🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.33.117Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.162.85🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScory.ns.cloudflare.com ⭐
NStia.ns.cloudflare.com
MXmail.db2tutorial.com ⭐
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.33.117, 172.67.162.85
IPv6 hints2606:4700:3033::6815:2175, 2606:4700:3033::ac43:a255
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=96, name=cloudflare-ech.com
SOAcory.ns.cloudflare.comdns@cloudflare.com serial=2398407309

MX for

db2tutorial.com

Same first word

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DNS History

5 records (4 active, 1 former)

202120222023202420252026A104.21.33.117172.67.162.852606:4700:3033::6815:21752606:4700:3033::ac43:a255162.241.244.142
●A104.21.33.1172026-02-15 → 2026-04-23 · 3 obs
○ 2020-02-06 18:03:50
● 2026-02-15 01:19:24
● 2026-04-23 19:26:08
○A162.241.244.1422020-02-06 → 2020-02-06 · 3 obs
● 2020-02-06 18:03:50
○ 2026-02-15 01:19:24
○ 2026-04-23 19:26:08
●A172.67.162.852026-02-15 → 2026-04-23 · 3 obs
○ 2020-02-06 18:03:50
● 2026-02-15 01:19:24
● 2026-04-23 19:26:08
●A2606:4700:3033::6815:21752026-02-15 → 2026-04-23 · 3 obs
○ 2020-02-06 18:03:50
● 2026-02-15 01:19:24
● 2026-04-23 19:26:08
●A2606:4700:3033::ac43:a2552026-02-15 → 2026-04-23 · 3 obs
○ 2020-02-06 18:03:50
● 2026-02-15 01:19:24
● 2026-04-23 19:26:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comg.gtld-servers.net, c.gtld-servers.net, j.gtld-servers.net, m.gtld-servers.net...-
db2tutorial.comcory.ns.cloudflare.com, tia.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.93

NS records: cory.ns.cloudflare.com, tia.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for db2tutorial.com (unsigned zone)

⏱️ Timing

Total: 198ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.33.117, 172.67.162.85
AAAA22606:4700:3033::6815:2175, 2606:4700:3033::ac43:a255
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (cory.ns.cloudflare.com, cory.ns.cloudflare.com, cory.ns.cloudflare.com...)

Analysis

Mail Server Role

mail.db2tutorial.com serves as the mail server for db2tutorial.com.

IP Addresses

mail.db2tutorial.com points to four IP numbers: 2606:4700:3033::6815:2175, 2606:4700:3033::ac43:a255, 104.21.33.117 and 172.67.162.85.

Other host names including www.susan8.top, chineseaci.com, www.linuxgamecast.com, mr005.rajaalam89b.store and events.com.fj share IP numbers with mail.db2tutorial.com.