`mail.boullder.com`

DNSSEC	⚠️ Not signed
A	136.243.72.27^{🇩🇪 Hetzner136.243.0.0/16 HETZNER-RZ-BLK-ERX3}
		PTR	`theming.co`

`boullder.com`

	DNSSEC	⚠️ Not signed
	A	136.243.72.27^{🇩🇪 Hetzner136.243.0.0/16 HETZNER-RZ-BLK-ERX3}
	NS	`robotns3.second-ns.com` ⭐ ⚠️ Not in parent delegation
	NS	`ns1.boullder.com` ⚠️ Not in zone NS records
	NS	`ns1.first-ns.de` ⚠️ Not in parent delegation
	NS	`ns2.boullder.com` ⚠️ Not in zone NS records
	NS	`robotns2.second-ns.de` ⚠️ Not in parent delegation
	MX	`mail.boullder.com` ⭐
	SOA	`robotns3.second-ns.com`litty\@studio.gmail.com 2026-03-27 #2

MX for

boullder.com

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DNS History

1 record (1 active, 0 former)

●A136.243.72.272026-03-26 → 2026-03-28 · 2 obs

● 2026-03-26 18:19:12
● 2026-03-28 08:36:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
boullder.com	ns1.boullder.com, ns2.boullder.com	2 records

✅ Authoritative Response

Server:136.243.72.27

NS records: ns1.boullder.com, ns2.boullder.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for boullder.com (unsigned zone)

⏱️ Timing

Total: 419ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`136.243.72.27`

📌 Glue Records Collected

Total: 2

In-bailiwick: 2 (ns1.boullder.com, ns2.boullder.com)

Analysis

Mail Server Role

mail.boullder.com is the mail server for boullder.com.

IP Addresses

mail.boullder.com maps to IP address 136.243.72.27.

Other host names, for instance mail.theming.co, theming.co, detekt.org, mail.detekt.org and boullder.com share IP numbers with mail.boullder.com.

mail.boullder.com - robtex.com