openintro.com - dns.ninja

`openintro.com`

DNSSEC	⚠️ Not signed
A	2001:4860:4802:32::15^{🇺🇸 Google2001:4860::/32}
		PTR	`any-in-2001-4860-4802-32--15.1e100.net`
A	2001:4860:4802:34::15^{🇺🇸 Google2001:4860::/32}
A	2001:4860:4802:36::15^{🇺🇸 Google2001:4860::/32}
A	2001:4860:4802:38::15^{🇺🇸 Google2001:4860::/32}
A	216.239.32.21^{🇺🇸 Google216.239.32.0/24}
A	216.239.34.21^{🇺🇸 Google216.239.34.0/24}
A	216.239.36.21^{🇺🇸 Google216.239.36.0/24}
A	216.239.38.21^{🇺🇸 Google216.239.38.0/24}
NS	`ns-cloud-d1.googledomains.com` ⭐
		A	2001:4860:4802:32::6d^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-d1.googledomains.com`
		A	216.239.32.109^{🇺🇸 Google216.239.32.0/24}
			PTR	`ns-cloud-d1.googledomains.com`
NS	`ns-cloud-d2.googledomains.com`
		A	2001:4860:4802:34::6d^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-d2.googledomains.com`
		A	216.239.34.109^{🇺🇸 Google216.239.34.0/24}
			PTR	`ns-cloud-d2.googledomains.com`
NS	`ns-cloud-d3.googledomains.com`
		A	2001:4860:4802:36::6d^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-d3.googledomains.com`
		A	216.239.36.109^{🇺🇸 Google216.239.36.0/24}
			PTR	`ns-cloud-d3.googledomains.com`
NS	`ns-cloud-d4.googledomains.com`
		A	2001:4860:4802:38::6d^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-d4.googledomains.com`
		A	216.239.38.109^{🇺🇸 Google216.239.38.0/24}
			PTR	`ns-cloud-d4.googledomains.com`
MX	`mxa.mailgun.org` ⭐
		A	34.36.182.139^{🇺🇸 Google34.32.0.0/11}
			PTR	`139.182.36.34.bc.googleusercontent.com`
MX	`mxb.mailgun.org` ⭐
		A	34.36.182.139^{🇺🇸 Google34.32.0.0/11}
			PTR	`139.182.36.34.bc.googleusercontent.com`
TXT	`v=spf1 include:mailgun.org ~all`
SOA	`ns-cloud-d1.googledomains.com`dns-admin@google.com serial=13

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1785554552

Same first word

openintro.net

openintro.us

openintro.org

openintro.com

Similar names

DNS History

30 records (14 active, 16 former)

●NSns-cloud-d1.googledomains.com2016-11-18 → 2026-08-01 · 3 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2026-08-01 03:24:52

●NSns-cloud-d2.googledomains.com2016-11-18 → 2026-08-01 · 3 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2026-08-01 03:24:52

●NSns-cloud-d3.googledomains.com2016-11-18 → 2026-08-01 · 3 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2026-08-01 03:24:52

●NSns-cloud-d4.googledomains.com2016-11-18 → 2026-08-01 · 3 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2026-08-01 03:24:52

○NSns1.dreamhost.com2015-06-10 → 2016-01-24 · 4 obs

● 2015-06-10 16:19:36
● 2016-01-24 05:53:54
○ 2016-11-18 21:16:30
○ 2026-08-01 03:24:52

○NSns2.dreamhost.com2015-06-10 → 2016-01-24 · 4 obs

● 2015-06-10 16:19:36
● 2016-01-24 05:53:54
○ 2016-11-18 21:16:30
○ 2026-08-01 03:24:52

○NSns3.dreamhost.com2015-06-10 → 2016-01-24 · 4 obs

● 2015-06-10 16:19:36
● 2016-01-24 05:53:54
○ 2016-11-18 21:16:30
○ 2026-08-01 03:24:52

○MXalt1.aspmx.l.google.com2015-06-10 → 2016-01-24 · 4 obs

● 2015-06-10 16:19:36
● 2016-01-24 05:53:54
○ 2016-11-18 21:16:30
○ 2026-08-01 03:24:52

○MXalt1.gmr-smtp-in.l.google.com2016-11-18 → 2018-01-09 · 5 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2018-01-09 23:08:44
○ 2026-04-08 19:04:32
○ 2026-08-01 03:24:52

○MXalt2.aspmx.l.google.com2015-06-10 → 2016-01-24 · 4 obs

● 2015-06-10 16:19:36
● 2016-01-24 05:53:54
○ 2016-11-18 21:16:30
○ 2026-08-01 03:24:52

○MXalt2.gmr-smtp-in.l.google.com2016-11-18 → 2018-01-09 · 5 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2018-01-09 23:08:44
○ 2026-04-08 19:04:32
○ 2026-08-01 03:24:52

○MXalt3.gmr-smtp-in.l.google.com2016-11-18 → 2018-01-09 · 5 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2018-01-09 23:08:44
○ 2026-04-08 19:04:32
○ 2026-08-01 03:24:52

○MXalt4.gmr-smtp-in.l.google.com2016-11-18 → 2018-01-09 · 5 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2018-01-09 23:08:44
○ 2026-04-08 19:04:32
○ 2026-08-01 03:24:52

○MXaspmx.l.google.com2015-06-10 → 2016-01-24 · 4 obs

● 2015-06-10 16:19:36
● 2016-01-24 05:53:54
○ 2016-11-18 21:16:30
○ 2026-08-01 03:24:52

○MXaspmx2.googlemail.com2015-06-10 → 2016-01-24 · 4 obs

● 2015-06-10 16:19:36
● 2016-01-24 05:53:54
○ 2016-11-18 21:16:30
○ 2026-08-01 03:24:52

○MXaspmx3.googlemail.com2015-06-10 → 2016-01-24 · 4 obs

● 2015-06-10 16:19:36
● 2016-01-24 05:53:54
○ 2016-11-18 21:16:30
○ 2026-08-01 03:24:52

○MXaspmx4.googlemail.com2015-06-10 → 2016-01-24 · 4 obs

● 2015-06-10 16:19:36
● 2016-01-24 05:53:54
○ 2016-11-18 21:16:30
○ 2026-08-01 03:24:52

○MXaspmx5.googlemail.com2015-06-10 → 2016-01-24 · 4 obs

● 2015-06-10 16:19:36
● 2016-01-24 05:53:54
○ 2016-11-18 21:16:30
○ 2026-08-01 03:24:52

○MXgmr-smtp-in.l.google.com2016-11-18 → 2018-01-09 · 5 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2018-01-09 23:08:44
○ 2026-04-08 19:04:32
○ 2026-08-01 03:24:52

●MXmxa.mailgun.org2026-04-08 → 2026-08-01 · 3 obs

○ 2018-01-09 23:08:44
● 2026-04-08 19:04:32
● 2026-08-01 03:24:52

●MXmxb.mailgun.org2026-04-08 → 2026-08-01 · 3 obs

○ 2018-01-09 23:08:44
● 2026-04-08 19:04:32
● 2026-08-01 03:24:52

○A173.236.178.622015-06-10 → 2016-01-24 · 4 obs

● 2015-06-10 16:19:36
● 2016-01-24 05:53:54
○ 2016-11-18 21:16:30
○ 2026-08-01 03:24:52

●A2001:4860:4802:32::152016-11-18 → 2026-08-01 · 3 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2026-08-01 03:24:52

●A2001:4860:4802:34::152016-11-18 → 2026-08-01 · 3 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2026-08-01 03:24:52

●A2001:4860:4802:36::152016-11-18 → 2026-08-01 · 3 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2026-08-01 03:24:52

●A2001:4860:4802:38::152016-11-18 → 2026-08-01 · 3 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2026-08-01 03:24:52

●A216.239.32.212016-11-18 → 2026-08-01 · 3 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2026-08-01 03:24:52

●A216.239.34.212016-11-18 → 2026-08-01 · 3 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2026-08-01 03:24:52

●A216.239.36.212016-11-18 → 2026-08-01 · 3 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2026-08-01 03:24:52

●A216.239.38.212016-11-18 → 2026-08-01 · 3 obs

○ 2016-01-24 05:53:54
● 2016-11-18 21:16:30
● 2026-08-01 03:24:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, e.gtld-servers.net...	-
openintro.com	ns-cloud-d1.googledomains.com, ns-cloud-d2.googledomains.com, ns-cloud-d3.googledomains.com, ns-cloud-d4.googledomains.com	8 records

✅ Authoritative Response

Server:216.239.34.109

NS records: ns-cloud-d1.googledomains.com, ns-cloud-d2.googledomains.com, ns-cloud-d3.googledomains.com, ns-cloud-d4.googledomains.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for openintro.com (unsigned zone)

⏱️ Timing

Total: 534ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`216.239.32.21, 216.239.36.21...`
AAAA	4	`2001:4860:4802:32::15, 2001:4860:4802:34::15...`
NS	4	`ns-cloud-d2.googledomains.com, ns-cloud-d3.googledomains.com...`
MX	2	`mxa.mailgun.org (pri: 10), mxb.mailgun.org (pri: 10)`
TXT	1	`v=spf1 include:mailgun.org ~all`
SOA	1	`ns-cloud-d1.googledomains.com dns-admin.`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns-cloud-d1.googledomains.com, ns-cloud-d1.googledomains.com, ns-cloud-d2.googledomains.com...)

Analysis

IP Addresses

With 8 IP addresses in total, openintro.com resolves to 216.239.32.21, 216.239.34.21, 216.239.36.21 and 5 other.

Among the host names that share IP numbers with openintro.com are baarak.com, null.muabanhoachat.vn, openvirtualworld.com and two others.

Name Servers

The domain openintro.com is delegated to these four name servers: ns-cloud-d1.googledomains.com, ns-cloud-d2.googledomains.com, ns-cloud-d3.googledomains.com and ns-cloud-d4.googledomains.com.

openintro.com shares at least some of its name servers with other domains, including riverbendselfstorageky.com, mortgagemaxpro.com, smice-email.com and two others.

The host names ns-cloud-d1.googledomains.com, ns-cloud-d2.googledomains.com, ns-cloud-d3.googledomains.com and ns-cloud-d4.googledomains.com each resolve to two IP addresses: ns-cloud-d1.googledomains.com resolves to 216.239.32.109 and 2001:4860:4802:32::6d; ns-cloud-d2.googledomains.com resolves to 216.239.34.109 and 2001:4860:4802:34::6d; ns-cloud-d3.googledomains.com resolves to 216.239.36.109 and 2001:4860:4802:36::6d; ns-cloud-d4.googledomains.com resolves to 216.239.38.109 and 2001:4860:4802:38::6d.

Mail Servers

The MX records for openintro.com point to two mail servers: mxa.mailgun.org and mxb.mailgun.org.

openintro.com has the same mail server arrangement as a number of other domains, for example myreviewsite.net, getmoparpartsonline.com, tooloco.com and two more.

openintro.com shares at least some of its mail servers with other domains — for example dsgss.com, roomzilla.me, mail.simplified.com and two more.

mxa.mailgun.org and mxb.mailgun.org each point to one IP address — 34.36.182.139.

The host names mxa.mailgun.org and mxb.mailgun.org both resolve to 34.36.182.139 IP addresses.