mail.dsic21.com - robtex.com

mail.dsic21.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:96fe🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:87🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.0.135Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.150.254🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.0.135, 172.67.150.254
IPv6 hints2606:4700:3030::ac43:96fe, 2606:4700:3034::6815:87
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=25, name=cloudflare-ech.com

dsic21.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:96fe🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:87🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.0.135Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.150.254🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSelma.ns.cloudflare.com ⭐
NSlou.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.0.135, 172.67.150.254
IPv6 hints2606:4700:3030::ac43:96fe, 2606:4700:3034::6815:87
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=1, name=cloudflare-ech.com
SOAelma.ns.cloudflare.comdns@cloudflare.com serial=2398977941

Same first word

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DNS History

6 records (4 active, 2 former)

201020122014201620182020202220242026A104.21.0.135172.67.150.2542606:4700:3030::ac43:96fe2606:4700:3034::6815:87121.156.63.181218.37.38.75
●A104.21.0.1352026-02-16 → 2026-05-12 · 3 obs
○ 2016-05-01 03:28:40
● 2026-02-16 08:14:26
● 2026-05-12 04:08:26
○A121.156.63.1812015-06-07 → 2016-05-01 · 5 obs
○ 2009-01-19 02:16:08
● 2015-06-07 11:51:50
● 2016-05-01 03:28:40
○ 2026-02-16 08:14:26
○ 2026-05-12 04:08:26
●A172.67.150.2542026-02-16 → 2026-05-12 · 3 obs
○ 2016-05-01 03:28:40
● 2026-02-16 08:14:26
● 2026-05-12 04:08:26
○A218.37.38.752009-01-19 → 2009-01-19 · 3 obs
● 2009-01-19 02:16:08
○ 2015-06-07 11:51:50
○ 2026-05-12 04:08:26
●A2606:4700:3030::ac43:96fe2026-02-16 → 2026-05-12 · 3 obs
○ 2016-05-01 03:28:40
● 2026-02-16 08:14:26
● 2026-05-12 04:08:26
●A2606:4700:3034::6815:872026-02-16 → 2026-05-12 · 3 obs
○ 2016-05-01 03:28:40
● 2026-02-16 08:14:26
● 2026-05-12 04:08:26

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
come.gtld-servers.net, a.gtld-servers.net, m.gtld-servers.net, k.gtld-servers.net...-
dsic21.comelma.ns.cloudflare.com, lou.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.199

NS records: elma.ns.cloudflare.com, lou.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dsic21.com (unsigned zone)

⏱️ Timing

Total: 109ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.150.254, 104.21.0.135
AAAA22606:4700:3030::ac43:96fe, 2606:4700:3034::6815:87
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.dsic21.com points to four IP numbers: 2606:4700:3030::ac43:96fe, 2606:4700:3034::6815:87, 104.21.0.135 and 172.67.150.254.

Other host names, for instance cytsoftware.com, www.cap3.edu.vn, www.erpaan.org, www.lgbtnet.dk and zagabet.xyz share IP numbers with mail.dsic21.com.