`mail.engineeringbluebook.com`

DNSSEC	⚠️ Not signed
A	54.193.102.212^{🇺🇸 Amazon54.193.0.0/17 EC2 SFO VPC Prefix}
		PTR	`mailserver01.edirectory.com`

`engineeringbluebook.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:5254^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:9b6d^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.82.84^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.155.109^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`gail.ns.cloudflare.com` ⭐
NS	`ken.ns.cloudflare.com`
MX	`mail.engineeringbluebook.com` ⭐
TXT	`v=spf1 +a +mx +ip4:54.193.102.212 +ip4:54.193.102.212 ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.82.84, 172.67.155.109
		IPv6	2606:4700:3032::6815:5254, 2606:4700:3036::ac43:9b6d
SOA	`gail.ns.cloudflare.com`dns@cloudflare.com serial=2396988311

MX for

engineeringbluebook.com

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DNS History

1 record (1 active, 0 former)

●A54.193.102.2122026-03-26 → 2026-03-26 · 2 obs

● 2026-03-26 20:31:26
● 2026-03-26 22:17:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
engineeringbluebook.com	ken.ns.cloudflare.com, gail.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.127

NS records: ken.ns.cloudflare.com, gail.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for engineeringbluebook.com (unsigned zone)

⏱️ Timing

Total: 145ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`54.193.102.212`

📌 Glue Records Collected

Total: 12

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

Analysis

Mail Server Role

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

IP Addresses

mail.engineeringbluebook.com points to a single IP address: 54.193.102.212.

Other host names such as mail.showoffmydog.com, mail.soulella.com, mail.conect.clinic, mail.10-degrees.com and mail.lazonaoeste.com share IP numbers with mail.engineeringbluebook.com.

mail.engineeringbluebook.com - robtex.com