instructo.com - dns.ninja

`instructo.com`

DNSSEC	⚠️ Not signed
A	20.105.216.52^{🇳🇱 Microsoft20.64.0.0/10}
NS	`ns1-04.azure-dns.com` ⭐
		A	2603:1061:0:700::4^{🇺🇸 Microsoft2603:1000::/25 MICROSOFT}
			PTR	`ns1-04.azure-dns.com`
		A	13.107.236.4^{🇺🇸 Microsoft13.104.0.0/14 MICROSOFT}
			PTR	`ns1-04.azure-dns.com`
NS	`ns2-04.azure-dns.net`
		A	2620:1ec:8ec:700::4^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns2-04.azure-dns.net`
		A	150.171.21.4^{🇺🇸 Microsoft150.171.0.0/16 MICROSOFT}
			PTR	`ns2-04.azure-dns.net`
NS	`ns3-04.azure-dns.org`
		A	2a01:111:4000:700::4^{🇬🇧 Microsoft2a01:111:4000::/36}
			PTR	`ns3-04.azure-dns.org`
		A	204.14.183.4^{🇺🇸 Microsoft204.14.180.0/22}
			PTR	`ns3-04.azure-dns.org`
NS	`ns4-04.azure-dns.info`
		A	2620:1ec:bda:700::4^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns4-04.azure-dns.info`
		A	208.84.5.4^{🇺🇸 Microsoft208.84.0.0/21 MICROSOFT}
			PTR	`ns4-04.azure-dns.info`
MX	`smtp.google.com` ⭐
		A	2607:f8b0:4004:c06::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bg-in-f26.1e100.net`
		A	2607:f8b0:4004:c09::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bh-in-f26.1e100.net`
		A	2607:f8b0:4004:c09::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bh-in-f27.1e100.net`
		A	2607:f8b0:4004:c29::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadum-in-f27.1e100.net`
		A	172.253.63.26^{🇺🇸 Google172.253.63.0/24}
			PTR	`bi-in-f26.1e100.net`
		A	172.253.115.26^{🇺🇸 Google172.253.115.0/24}
			PTR	`bg-in-f26.1e100.net`
		A	172.253.122.26^{🇺🇸 Google172.253.122.0/24}
			PTR	`bh-in-f26.1e100.net`
		A	172.253.122.27^{🇺🇸 Google172.253.122.0/24}
			PTR	`bh-in-f27.1e100.net`
		A	173.194.45.26^{🇺🇸 Google173.194.0.0/16}
			PTR	`yuiadum-in-f26.1e100.net`
TXT	`google-site-verification=yhDhtrJE5epCF7yr6hvxjnTgUVSakU42aZkuMmz3_sc`
TXT	`v=spf1 include:_spf.google.com include:spf.orbit.teamleader.eu ~all`
SOA	`ns1-04.azure-dns.com`azuredns-hostmaster@microsoft.com serial=1

`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=1783837297

Same first word

instructo.com

instructo.pl

instructo.com.au

Similar names

DNS History

11 records (6 active, 5 former)

○NSbuy.internettraffic.com2015-06-29 → 2015-11-09 · 4 obs

● 2015-06-29 11:34:06
● 2015-11-09 03:18:38
○ 2016-01-27 13:16:24
○ 2026-07-12 06:27:38

●NSns1-04.azure-dns.com2026-02-28 → 2026-07-12 · 3 obs

○ 2017-02-18 10:07:26
● 2026-02-28 00:56:14
● 2026-07-12 06:27:38

○NSns1.namefind.com2016-01-27 → 2017-02-18 · 5 obs

○ 2015-11-09 03:18:38
● 2016-01-27 13:16:24
● 2017-02-18 10:07:26
○ 2026-02-28 00:56:14
○ 2026-07-12 06:27:38

●NSns2-04.azure-dns.net2026-02-28 → 2026-07-12 · 3 obs

○ 2017-02-18 10:07:26
● 2026-02-28 00:56:14
● 2026-07-12 06:27:38

●NSns3-04.azure-dns.org2026-02-28 → 2026-07-12 · 3 obs

○ 2017-02-18 10:07:26
● 2026-02-28 00:56:14
● 2026-07-12 06:27:38

●NSns4-04.azure-dns.info2026-02-28 → 2026-07-12 · 3 obs

○ 2017-02-18 10:07:26
● 2026-02-28 00:56:14
● 2026-07-12 06:27:38

○NSsell.internettraffic.com2015-06-29 → 2015-11-09 · 4 obs

● 2015-06-29 11:34:06
● 2015-11-09 03:18:38
○ 2016-01-27 13:16:24
○ 2026-07-12 06:27:38

●MXsmtp.google.com2026-02-28 → 2026-07-12 · 2 obs

● 2026-02-28 00:56:14
● 2026-07-12 06:27:38

●A20.105.216.522026-02-28 → 2026-07-12 · 3 obs

○ 2017-02-18 10:07:26
● 2026-02-28 00:56:14
● 2026-07-12 06:27:38

○A208.73.211.702016-01-27 → 2017-02-18 · 5 obs

○ 2015-11-09 03:18:38
● 2016-01-27 13:16:24
● 2017-02-18 10:07:26
○ 2026-02-28 00:56:14
○ 2026-07-12 06:27:38

○A69.172.201.2082015-06-29 → 2015-11-09 · 4 obs

● 2015-06-29 11:34:06
● 2015-11-09 03:18:38
○ 2016-01-27 13:16:24
○ 2026-07-12 06:27:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, c.gtld-servers.net, i.gtld-servers.net, m.gtld-servers.net...	-
instructo.com	ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.azure-dns.info	2 records

✅ Authoritative Response

Server:204.14.183.4

NS records: ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.azure-dns.info

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for instructo.com (unsigned zone)

⏱️ Timing

Total: 752ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`20.105.216.52`
NS	4	`ns1-04.azure-dns.com, ns2-04.azure-dns.net...`
MX	1	`smtp.google.com (pri: 1)`
TXT	2	`google-site-verification=yhDhtrJE5epCF7y, v=spf1 include:_spf.google.com include:s`
SOA	1	`ns1-04.azure-dns.com azuredns-hostmaster`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1-04.azure-dns.com, ns1-04.azure-dns.com)

Analysis

IP Addresses

instructo.com points to a single IP number: 20.105.216.52.

Additional host names — springjapan.com, lhh-france.com, canme.cloud and two others — share IP numbers with instructo.com.

Name Servers

instructo.com has four authoritative name servers: ns1-04.azure-dns.com, ns4-04.azure-dns.info, ns2-04.azure-dns.net and ns3-04.azure-dns.org.

instructo.com has at least partial name server overlap with other domains, such as onedrive.kr, txcare.net, go.prestoweb.de and two others.

ns1-04.azure-dns.com, ns4-04.azure-dns.info, ns2-04.azure-dns.net and ns3-04.azure-dns.org all point to exactly two IP numbers each: ns1-04.azure-dns.com → 13.107.236.4 and 2603:1061:0:700::4; ns4-04.azure-dns.info → 208.84.5.4 and 2620:1ec:bda:700::4; ns2-04.azure-dns.net → 150.171.21.4 and 2620:1ec:8ec:700::4; ns3-04.azure-dns.org → 204.14.183.4 and 2a01:111:4000:700::4.

Mail Servers

instructo.com has one mail server: smtp.google.com.

instructo.com shares the same mail server setup as other domains, including precisionroofingmaine.com, inabrarealstate.com, admitad.ru and two others.

instructo.com shares mail servers — at least in part — with other domains, including misi.info, bootshaus.se, cliffordacademy.org and two others.

These mail servers tend to appear together with the mail servers aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.

smtp.google.com points to 9 IP numbers: 172.253.63.26, 172.253.115.26, 172.253.122.26 and 6 other.