instruct.nl - dns.ninja

`instruct.nl`

DNSSEC	🔒 Signed (DS record present)
A	2606:4700:3035::6815:9dc^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:830b^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.9.220^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.131.11^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`dina.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a6b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dina.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c06b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dina.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:206b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dina.ns.cloudflare.com`
		A	108.162.192.107^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dina.ns.cloudflare.com`
		A	172.64.32.107^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dina.ns.cloudflare.com`
		A	173.245.58.107^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dina.ns.cloudflare.com`
NS	`ian.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b76^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ian.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c176^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ian.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2176^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ian.ns.cloudflare.com`
		A	108.162.193.118^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ian.ns.cloudflare.com`
		A	172.64.33.118^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ian.ns.cloudflare.com`
		A	173.245.59.118^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ian.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c09::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bh-in-f26.1e100.net`
		A	173.194.45.27^{🇺🇸 Google173.194.0.0/16}
			PTR	`yuiadum-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽²⁰⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽²⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`aspmx2.googlemail.com`⁽³⁰⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`aspmx3.googlemail.com`⁽³⁰⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
TXT	`google-site-verification=KkzYDlZ1CIbpmdsKqmZxUKx48RhyglCQqTdK_VpXwF0`
TXT	`v=spf1 a include:_spf.transip.email include:_spf.google.com include:spf.flowm...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.9.220, 172.67.131.11
		IPv6 hints	2606:4700:3035::6815:9dc, 2606:4700:3037::ac43:830b
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=14, name=cloudflare-ech.com
SOA	`dina.ns.cloudflare.com`dns@cloudflare.com serial=2410032569

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐
	NS	`ns3.dns.nl`
	NS	`ns4.dns.nl`
	TXT	`nl zone update: 2026-07-30 17:00:01 +0000 (EPOCH 1785430801)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-07-30 #34

WOT: SAFE (62/100)

Subdomains

mail.instruct.nl

Same first word

instruct.ru

instruct.at

instruct.com.br

instruct.be

instruct.ca

instruct.net

instruct.top

instruct.ch

instruct.ai

instruct.us

instruct.org

instruct.com

instruct.com.au

instruct.info

instruct.it

instruct.me

instruct.nl

instruct.co

instruct.eu

instruct.de

Similar names

ctiturns.com

trustnic.com

trustinc.org

structin.com

sturtinc.com

cintrust.com

nistruct.com

trustinc.biz

trustinc.jp

DNS History

20 records (11 active, 9 former)

●NSdina.ns.cloudflare.com2015-08-18 → 2026-07-30 · 2 obs

● 2015-08-18 01:38:08
● 2026-07-30 17:54:40

●NSian.ns.cloudflare.com2015-08-18 → 2026-07-30 · 2 obs

● 2015-08-18 01:38:08
● 2026-07-30 17:54:40

●MXalt1.aspmx.l.google.com2015-08-18 → 2026-07-30 · 2 obs

● 2015-08-18 01:38:08
● 2026-07-30 17:54:40

●MXalt2.aspmx.l.google.com2015-08-18 → 2026-07-30 · 2 obs

● 2015-08-18 01:38:08
● 2026-07-30 17:54:40

●MXaspmx.l.google.com2015-08-18 → 2026-07-30 · 2 obs

● 2015-08-18 01:38:08
● 2026-07-30 17:54:40

●MXaspmx2.googlemail.com2015-08-18 → 2026-07-30 · 2 obs

● 2015-08-18 01:38:08
● 2026-07-30 17:54:40

●MXaspmx3.googlemail.com2015-08-18 → 2026-07-30 · 2 obs

● 2015-08-18 01:38:08
● 2026-07-30 17:54:40

●A104.21.9.2202026-03-31 → 2026-07-30 · 8 obs

○ 2017-04-20 16:53:06
● 2026-03-31 15:56:16
○ 2026-04-10 09:44:12
● 2026-05-15 18:09:28
● 2026-06-15 15:16:04
○ 2026-06-19 01:24:24
● 2026-07-02 09:24:02
● 2026-07-30 17:54:40

○A104.28.6.492015-08-18 → 2017-04-20 · 4 obs

● 2015-08-18 01:38:08
● 2017-04-20 16:53:06
○ 2026-03-31 15:56:16
○ 2026-07-30 17:54:40

○A104.28.7.492015-08-18 → 2017-04-20 · 4 obs

● 2015-08-18 01:38:08
● 2017-04-20 16:53:06
○ 2026-03-31 15:56:16
○ 2026-07-30 17:54:40

●A172.67.131.112026-03-31 → 2026-07-30 · 8 obs

○ 2017-04-20 16:53:06
● 2026-03-31 15:56:16
○ 2026-04-10 09:44:12
● 2026-05-15 18:09:28
● 2026-06-15 15:16:04
○ 2026-06-19 01:24:24
● 2026-07-02 09:24:02
● 2026-07-30 17:54:40

○A188.114.96.02026-04-10 → 2026-06-19 · 7 obs

○ 2026-03-31 15:56:16
● 2026-04-10 09:44:12
○ 2026-05-15 18:09:28
○ 2026-06-15 15:16:04
● 2026-06-19 01:24:24
○ 2026-07-02 09:24:02
○ 2026-07-30 17:54:40

○A188.114.97.02026-04-10 → 2026-06-19 · 7 obs

○ 2026-03-31 15:56:16
● 2026-04-10 09:44:12
○ 2026-05-15 18:09:28
○ 2026-06-15 15:16:04
● 2026-06-19 01:24:24
○ 2026-07-02 09:24:02
○ 2026-07-30 17:54:40

○A2400:cb00:2048:1::681c:6312015-08-18 → 2017-04-20 · 4 obs

● 2015-08-18 01:38:08
● 2017-04-20 16:53:06
○ 2026-03-31 15:56:16
○ 2026-07-30 17:54:40

○A2400:cb00:2048:1::681c:7312015-08-18 → 2017-04-20 · 4 obs

● 2015-08-18 01:38:08
● 2017-04-20 16:53:06
○ 2026-03-31 15:56:16
○ 2026-07-30 17:54:40

○A2606:4700:3030::6815:9dc2026-03-31 → 2026-06-15 · 7 obs

○ 2017-04-20 16:53:06
● 2026-03-31 15:56:16
○ 2026-04-10 09:44:12
● 2026-05-15 18:09:28
● 2026-06-15 15:16:04
○ 2026-06-19 01:24:24
○ 2026-07-30 17:54:40

●A2606:4700:3035::6815:9dc2026-07-02 → 2026-07-30 · 3 obs

○ 2026-06-19 01:24:24
● 2026-07-02 09:24:02
● 2026-07-30 17:54:40

●A2606:4700:3037::ac43:830b2026-03-31 → 2026-07-30 · 8 obs

○ 2017-04-20 16:53:06
● 2026-03-31 15:56:16
○ 2026-04-10 09:44:12
● 2026-05-15 18:09:28
● 2026-06-15 15:16:04
○ 2026-06-19 01:24:24
● 2026-07-02 09:24:02
● 2026-07-30 17:54:40

○A2a06:98c1:3120::2026-04-10 → 2026-06-19 · 7 obs

○ 2026-03-31 15:56:16
● 2026-04-10 09:44:12
○ 2026-05-15 18:09:28
○ 2026-06-15 15:16:04
● 2026-06-19 01:24:24
○ 2026-07-02 09:24:02
○ 2026-07-30 17:54:40

○A2a06:98c1:3121::2026-04-10 → 2026-06-19 · 7 obs

○ 2026-03-31 15:56:16
● 2026-04-10 09:44:12
○ 2026-05-15 18:09:28
○ 2026-06-15 15:16:04
● 2026-06-19 01:24:24
○ 2026-07-02 09:24:02
○ 2026-07-30 17:54:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nl	ns1.dns.nl, ns3.dns.nl, ns4.dns.nl	-
instruct.nl	ian.ns.cloudflare.com, dina.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.107

NS records: ian.ns.cloudflare.com, dina.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 419ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.9.220, 172.67.131.11`
AAAA	2	`2606:4700:3035::6815:9dc, 2606:4700:3037::ac43:830b`
NS	2	`dina.ns.cloudflare.com, ian.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 10), alt1.aspmx.l.google.com (pri: 20)...`
TXT	2	`google-site-verification=KkzYDlZ1CIbpmds, v=spf1 a include:_spf.transip.email incl`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`dina.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

instruct.nl is a parent domain of mail.instruct.nl.

IP Addresses

instruct.nl has four IP addresses: 104.21.9.220, 172.67.131.11, 2606:4700:3035::6815:9dc and 2606:4700:3037::ac43:830b.

Among the host names that share IP numbers with instruct.nl are dietrricol.pro, finance-ao.survey-u.com, 18geil.com and two others.

Name Servers

Two name servers handle the delegation for instruct.nl: dina.ns.cloudflare.com and ian.ns.cloudflare.com.

instruct.nl has the same name server delegation as a number of other domains, such as informaticavo.nl, gps-taalenrekenen.nl, aceproject.org and two more.

instruct.nl shares at least some of its name servers with other domains, including sengtotokeb.site, callstar.ca, hnt.be and two others.

These name servers are routinely co-deployed with the name servers lily.ns.cloudflare.com, meera.ns.cloudflare.com, dom.ns.cloudflare.com and two others.

Host names resolving to 6 IP numbers:

dina.ns.cloudflare.com resolves to 108.162.192.107, 172.64.32.107 and 173.245.58.107 among others, with 3 other IP addresses in total.

ian.ns.cloudflare.com resolves to 108.162.193.118, 172.64.33.118 and 173.245.59.118 among others, with 3 other IP addresses in total.

Mail Servers

Mail for instruct.nl is handled by five mail servers, namely aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.

instruct.nl shares at least some of its mail servers with other domains — for example homechefs.com.br, regiofit.de, ambragroup.pl and two more.

It is common to find these mail servers paired with mail servers alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 more.

Hosts with two IP numbers each:

aspmx2.googlemail.com resolves to two addresses: 108.177.123.27 and 2800:3f0:4003:c0f::1a.

aspmx3.googlemail.com resolves to two addresses: 172.253.116.26 and 2a00:1450:400b:c02::1b.

aspmx.l.google.com resolves to two addresses: 173.194.45.27 and 2607:f8b0:4004:c09::1a.

alt1.aspmx.l.google.com resolves to two addresses: 108.177.123.27 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com resolves to two addresses: 172.253.116.27 and 2a00:1450:400b:c02::1a.

aspmx2.googlemail.com along with alt1.aspmx.l.google.com each resolve to 2800:3f0:4003:c0f::1a IP addresses.

aspmx2.googlemail.com along with alt1.aspmx.l.google.com each resolve to 108.177.123.27 IP addresses.