interteach.dk

📜 Historical scan 2026-10-01 06:34:09 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

interteach.dk is a .dk domain served by 2 nameservers (ns01.hostnet.nl, ns02.hostnet.nl). It was registered on 11 August 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.184.0.200 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by interteach-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 45ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.hostnet.nl	195.206.121.13 2001:67c:28cc::13	ns1.hostnet.nl ns1.hostnet.nl	AS197495 One.com A/S AS197495 One.com A/S
ns02.hostnet.nl	185.10.11.13 2001:67c:3c0::13	ns2.hostnet.nl ns2.hostnet.nl	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.184.0.200	600s	balancing.hostnet.nl	AS51468	One.com A/S	91.184.0.0/19	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 56ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	interteach-dk.mail.protection.outlook.com	2a01:111:f403:c967::c 2a01:111:f403:ca04::a 2a01:111:f403:ca21::a 2a01:111:f403:ca48::12 52.101.103.162 52.101.68.29 52.101.68.39 52.101.73.145	mail-cpjpr05cu00204.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-maspr04cu00102.inbound.protection.outlook.com mail-miypr05cu00202.inbound.protection.outlook.com mail-miypr03cu00202.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am6pr02cu00301.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40
🔶 Autoconfig	91.184.0.200

🔷 AAAA Records (IPv6)#

1 records 73ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2268:1:0:f816:3eff:fe7b:63c6	14400s	—	AS197902	Hostnet B.V.	2a02:2268:0:0:0:0:0:0/32	🇳🇱 The Netherlands	—

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 211ms

TXT Record
v=spf1 include:_spf.hostnet.nl include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (interteach.dk)
-all (hard fail)	v=spf1 include:_spf.hostnet.nl include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.interteach.dk)
p=reject	v=DMARC1; p=reject; sp=reject; adkim=r; aspf=r;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-07 19:04:53

www CNAME	interteach.dk (all on interteach.dk) → 91.184.0.200 2a02:2268:1:0:f816:3eff:fe7b:63c6 (AS51468 AS197902)
www vs bare domain	Same network interteach.dk: 91.184.0.200 2a02:2268:1:0:f816:3eff:fe7b:63c6 (AS51468 AS197902) www.interteach.dk: 91.184.0.200 2a02:2268:1:0:f816:3eff:fe7b:63c6 (AS51468 AS197902)
Wildcard	Yes: any name under the zone resolves

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-interteach-dk._domainkey.interteach.onmicrosoft.com	RSA · ~2048 bit
selector2	selector2-interteach-dk._domainkey.interteach.onmicrosoft.com	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

95ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

42ms

Field	Value
Serial	2026081202
Primary NS (MNAME)	ns01.hostnet.nl
Responsible (RNAME)	hostmaster@hostnet.nl
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-14 21:51:27

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2017-08-11
Expires	2026-08-31 (expired)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

45ms

51ms

56ms

AAAA

73ms

TXT

211ms

CAA

52ms

HTTPS

63ms

TLSA

601ms

SOA

42ms

MTA-STS

93ms

DNSSEC

95ms

SRV

101ms

Total

1157ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-07 19:04:53	801ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-03 06:46:32	6713ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-01 06:34:09 shown	1157ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-14 03:48:28	2986ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-28 15:12:53	4033ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-27 14:40:36	16831ms	2 NS 0 A 1 MX	🔓 Insecure
2026-07-15 10:44:21	2044ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-18 20:37:43	798ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-17 13:34:38	2383ms	2 NS 1 A 1 MX	🔓 Insecure