`mail.lessondelivery.com`

DNSSEC	⚠️ Not signed
A	185.4.73.228^{🇪🇪 AS198068185.4.73.0/24}
		PTR	`mail.lessondelivery.com`

`lessondelivery.com`

	DNSSEC	⚠️ Not signed
	A	185.4.73.228^{🇪🇪 AS198068185.4.73.0/24}
	NS	`dns.fastdns24.com` ⭐
	NS	`dns2.fastdns24.org`
	NS	`dns3.fastdns24.eu`
	NS	`dns4.fastdns24.link`
	MX	`mail.lessondelivery.com` ⭐
	TXT	`v=spf1 ip4:185.4.73.228 a mx ~all`
	SOA	`dns.fastdns24.com`support@fastvps.hosting 2026-05-21 #1

PTR for

228.73.4.185.in-addr.arpa

MX for

lessondelivery.com

Same first word

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DNS History

1 record (1 active, 0 former)

●A185.4.73.2282026-03-12 → 2026-07-12 · 2 obs

● 2026-03-12 19:19:50
● 2026-07-12 16:43:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net, b.gtld-servers.net...	-
lessondelivery.com	dns.fastdns24.com, dns2.fastdns24.org, dns3.fastdns24.eu, dns4.fastdns24.link	1 record

✅ Authoritative Response

Server:5.188.30.150

NS records: dns.fastdns24.com, dns2.fastdns24.org, dns3.fastdns24.eu, dns4.fastdns24.link

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for lessondelivery.com (unsigned zone)

⏱️ Timing

Total: 4545ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`185.4.73.228`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (dns.fastdns24.com)

Analysis

Mail Server Role

Mail for lessondelivery.com is routed through the mail server mail.lessondelivery.com.

IP Addresses

mail.lessondelivery.com has exactly one IP address — 185.4.73.228.

lessondelivery.com, for instance, is one of the other host names sharing IP numbers with mail.lessondelivery.com.

mail.lessondelivery.com - robtex.com