mail.studer.dev - dns.ninja

`mail.studer.dev`

CNAME	`aserv-cloud.cloudapp.net`
DNSSEC	⚠️ Not signed
A	168.62.161.121^{🇺🇸 Microsoft168.62.0.0/15 MICROSOFT}
		PTR	`mail.studer.dev`

`studer.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:cc0e^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3032::6815:3a85^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.58.133^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.204.14^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`eric.ns.cloudflare.com` ⭐
NS	`lisa.ns.cloudflare.com`
MX	`mail.studer.dev` ⭐
TXT	`google-site-verification=mlCKjTHjVft6DimXvYSu-0ZQNKeBjZF-OsjvQ_zEP1Y`
TXT	`v=spf1 include:_spf.studer.dev ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.58.133, 172.67.204.14
		IPv6 hints	2606:4700:3030::ac43:cc0e, 2606:4700:3032::6815:3a85
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=150, name=cloudflare-ech.com
SOA	`eric.ns.cloudflare.com`dns@cloudflare.com serial=2407220081

PTR for

121.161.62.168.in-addr.arpa

MX for

studer.dev

myhomework.space

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DNS History

1 record (1 active, 0 former)

●CNAMEaserv-cloud.cloudapp.net2020-03-09 → 2026-06-24 · 2 obs

● 2020-03-09 05:20:28
● 2026-06-24 04:51:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...	-
studer.dev	lisa.ns.cloudflare.com, eric.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.131

NS records: lisa.ns.cloudflare.com, eric.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studer.dev (unsigned zone)

⏱️ Timing

Total: 393ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`aserv-cloud.cloudapp.net`

Analysis

Mail Server Role

Mail for studer.dev and myhomework.space is handled by mail.studer.dev.

IP Addresses

mail.studer.dev has exactly one IP address — 168.62.161.121.

Among the host names that share IP numbers with mail.studer.dev is aserv-cloud.cloudapp.net, as one example.