mail.tcb7.com - robtex.com

mail.tcb7.com

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:da52🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:110a🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.17.10Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.218.82🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.17.10, 172.67.218.82
IPv6 hints2606:4700:3033::ac43:da52, 2606:4700:3034::6815:110a
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=148, name=cloudflare-ech.com

tcb7.com

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:da52🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:110a🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.17.10Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.218.82🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScarter.ns.cloudflare.com ⭐
NSmallory.ns.cloudflare.com
MX_dc-mx.2b9722760f05.tcb7.com ⭐
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.17.10, 172.67.218.82
IPv6 hints2606:4700:3033::ac43:da52, 2606:4700:3034::6815:110a
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=148, name=cloudflare-ech.com
SOAcarter.ns.cloudflare.comdns@cloudflare.com serial=2403231780

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DNS History

10 records (4 active, 6 former)

20162017201820192020202120222023202420252026NSmaster.dns.ne.jpns1.dns.ne.jpns2.dns.ne.jpMXtcb7.comA104.21.17.10172.67.218.822606:4700:3033::ac43:da522606:4700:3034::6815:110a49.212.180.82CNAMEtcb7.com
○NSmaster.dns.ne.jp2015-11-19 → 2016-06-21 · 4 obs
● 2015-11-19 12:16:52
● 2016-06-21 20:17:14
○ 2026-03-14 04:16:48
○ 2026-06-15 05:46:20
○NSns1.dns.ne.jp2015-11-19 → 2016-06-21 · 4 obs
● 2015-11-19 12:16:52
● 2016-06-21 20:17:14
○ 2026-03-14 04:16:48
○ 2026-06-15 05:46:20
○NSns2.dns.ne.jp2015-11-19 → 2016-06-21 · 4 obs
● 2015-11-19 12:16:52
● 2016-06-21 20:17:14
○ 2026-03-14 04:16:48
○ 2026-06-15 05:46:20
○MXtcb7.com2015-11-19 → 2016-06-21 · 4 obs
● 2015-11-19 12:16:52
● 2016-06-21 20:17:14
○ 2026-03-14 04:16:48
○ 2026-06-15 05:46:20
●A104.21.17.102026-03-14 → 2026-06-15 · 7 obs
○ 2016-06-21 20:17:14
● 2026-03-14 04:16:48
● 2026-04-24 17:16:42
○ 2026-04-29 10:40:54
○ 2026-05-01 06:35:50
● 2026-05-13 16:01:16
● 2026-06-15 05:46:20
●A172.67.218.822026-03-14 → 2026-06-15 · 7 obs
○ 2016-06-21 20:17:14
● 2026-03-14 04:16:48
● 2026-04-24 17:16:42
○ 2026-04-29 10:40:54
○ 2026-05-01 06:35:50
● 2026-05-13 16:01:16
● 2026-06-15 05:46:20
●A2606:4700:3033::ac43:da522026-03-14 → 2026-06-15 · 7 obs
○ 2016-06-21 20:17:14
● 2026-03-14 04:16:48
● 2026-04-24 17:16:42
○ 2026-04-29 10:40:54
○ 2026-05-01 06:35:50
● 2026-05-13 16:01:16
● 2026-06-15 05:46:20
●A2606:4700:3034::6815:110a2026-03-14 → 2026-06-15 · 7 obs
○ 2016-06-21 20:17:14
● 2026-03-14 04:16:48
● 2026-04-24 17:16:42
○ 2026-04-29 10:40:54
○ 2026-05-01 06:35:50
● 2026-05-13 16:01:16
● 2026-06-15 05:46:20
○A49.212.180.822015-07-17 → 2016-06-21 · 4 obs
● 2015-07-17 16:58:20
● 2016-06-21 20:17:14
○ 2026-03-14 04:16:48
○ 2026-06-15 05:46:20
○CNAMEtcb7.com2015-07-17 → 2016-06-21 · 4 obs
● 2015-07-17 16:58:20
● 2016-06-21 20:17:14
○ 2026-03-14 04:16:48
○ 2026-06-15 05:46:20

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...-
tcb7.comcarter.ns.cloudflare.com, mallory.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.83

NS records: carter.ns.cloudflare.com, mallory.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tcb7.com (unsigned zone)

⏱️ Timing

Total: 246ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.218.82, 104.21.17.10
AAAA22606:4700:3034::6815:110a, 2606:4700:3033::ac43:da52
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.tcb7.com has four IP addresses: 104.21.17.10, 172.67.218.82, 2606:4700:3033::ac43:da52 and 2606:4700:3034::6815:110a.

Additional host names — gzyuanxin.net, docs.flying-press.com, dinerio.es and two others — share IP numbers with mail.tcb7.com.