`mx.openedcourse.org`

DNSSEC	⚠️ Not signed
A	66.96.140.102^{🇺🇸 EIG-2987366.96.128.0/18 Endurance International Group, Inc}
		PTR	`102.140.96.66.static.eigbox.net`
A	66.96.140.103^{🇺🇸 EIG-2987366.96.128.0/18 Endurance International Group, Inc}

`openedcourse.org`

	DNSSEC	⚠️ Not signed
	A	66.96.149.25^{🇺🇸 EIG-2987366.96.128.0/18 Endurance International Group, Inc}
	NS	`ns1.dotster.com` ⭐
	NS	`ns2.dotster.com`
	MX	`mx.openedcourse.org` ⭐
	TXT	`v=spf1 ip4:66.96.128.0/18 include:websitewelcome.com ?all`
	SOA	`ns1.dotster.com`dnsadmin@dotster.com 2012-08-30 #49

MX for

openedcourse.org

Same first word

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xm.cz

xm.hk.cn

xm.fj.cn

xm.pl

xm.vn.ua

xm.house

xm.mk

xm.la

xm.com

DNS History

2 records (2 active, 0 former)

●A66.96.140.1022018-05-28 → 2026-07-09 · 5 obs

● 2018-05-28 21:43:44
● 2026-05-21 09:55:50
○ 2026-05-22 06:50:04
● 2026-07-08 11:14:00
● 2026-07-09 23:39:54

●A66.96.140.1032018-05-28 → 2026-07-09 · 5 obs

● 2018-05-28 21:43:44
● 2026-05-21 09:55:50
○ 2026-05-22 06:50:04
● 2026-07-08 11:14:00
● 2026-07-09 23:39:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
openedcourse.org	ns1.dotster.com, ns2.dotster.com	-

✅ Authoritative Response

Server:172.64.53.155

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for openedcourse.org (unsigned zone)

⏱️ Timing

Total: 754ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`66.96.140.102, 66.96.140.103`

Analysis

Mail Server Role

The mail server mx.openedcourse.org processes email for openedcourse.org.

IP Addresses

mx.openedcourse.org directs to two IP numbers, 66.96.140.102 and 66.96.140.103

Two other host names, along with mx.sellorbuymyhouse.com, mx.ranchoaida.com and mx.0-a.info, also share IP numbers with mx.openedcourse.org.

mx.openedcourse.org - dns.ninja