`mail.studenthd.com`

DNSSEC	⚠️ Not signed
A	104.21.68.63^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.191.36^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.68.63, 172.67.191.36
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=42, name=cloudflare-ech.com

`studenthd.com`

DNSSEC	⚠️ Not signed
A	104.21.68.63^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.191.36^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`coco.ns.cloudflare.com` ⭐
NS	`neil.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.68.63, 172.67.191.36
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=42, name=cloudflare-ech.com
SOA	`coco.ns.cloudflare.com`dns@cloudflare.com serial=2400893752

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DNS History

7 records (2 active, 5 former)

○NSns.liquidweb.com2015-10-24 → 2016-07-18 · 4 obs

● 2015-10-24 05:45:52
● 2016-07-18 20:31:38
○ 2026-03-02 04:50:38
○ 2026-04-15 00:20:18

○NSns1.liquidweb.com2015-10-24 → 2016-07-18 · 4 obs

● 2015-10-24 05:45:52
● 2016-07-18 20:31:38
○ 2026-03-02 04:50:38
○ 2026-04-15 00:20:18

○MXstudenthd.com2015-10-24 → 2016-07-18 · 4 obs

● 2015-10-24 05:45:52
● 2016-07-18 20:31:38
○ 2026-03-02 04:50:38
○ 2026-04-15 00:20:18

●A104.21.68.632026-03-02 → 2026-04-15 · 3 obs

○ 2016-07-18 20:31:38
● 2026-03-02 04:50:38
● 2026-04-15 00:20:18

●A172.67.191.362026-03-02 → 2026-04-15 · 3 obs

○ 2016-07-18 20:31:38
● 2026-03-02 04:50:38
● 2026-04-15 00:20:18

○A64.91.230.2302015-10-24 → 2016-07-18 · 4 obs

● 2015-10-24 05:45:52
● 2016-07-18 20:31:38
○ 2026-03-02 04:50:38
○ 2026-04-15 00:20:18

○CNAMEstudenthd.com2015-10-24 → 2016-07-18 · 4 obs

● 2015-10-24 05:45:52
● 2016-07-18 20:31:38
○ 2026-03-02 04:50:38
○ 2026-04-15 00:20:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, e.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net...	-
studenthd.com	coco.ns.cloudflare.com, neil.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.104

NS records: coco.ns.cloudflare.com, neil.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studenthd.com (unsigned zone)

⏱️ Timing

Total: 278ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.68.63, 172.67.191.36`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

Two IP numbers are pointed to by mail.studenthd.com: 104.21.68.63 and 172.67.191.36.

other host names include dryveshebert.com, ronrueggautomotive.com, stufic.com, barbedosgroup.com and www.nkjrjj.com; they share IP numbers with mail.studenthd.com.

mail.studenthd.com - robtex.com