explorum.dk

📜 Historical scan 2026-08-25 20:26:23 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

explorum.dk is a .dk domain served by 4 nameservers (ns1-37.azure-dns.com, ns2-37.azure-dns.net, ns3-37.azure-dns.org and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 199.36.158.100 is hosted by Fastly, Inc. (AS54113) in United States. Mail is handled by explorum-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. 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#

4 records 46ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1-37.azure-dns.com	150.171.10.37 2603:1061:0:10::25	ns1-37.azure-dns.com ns1-37.azure-dns.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns2-37.azure-dns.net	150.171.16.37 2620:1ec:8ec:10::25	ns2-37.azure-dns.net ns2-37.azure-dns.net	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns3-37.azure-dns.org	13.107.222.37 2a01:111:4000:10::25	ns3-37.azure-dns.org ns3-37.azure-dns.org	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns4-37.azure-dns.info	13.107.206.37 2620:1ec:bda:10::25	ns4-37.azure-dns.info ns4-37.azure-dns.info	AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🌍 A Records#

1 records 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
199.36.158.100	60s	—	AS54113	Fastly, Inc.	199.36.158.0/24	🇺🇸 United States	—

📧 MX Records#

1 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	explorum-dk.mail.protection.outlook.com	2a01:111:f403:ca04::a 2a01:111:f403:ca04::c 2a01:111:f403:ca04::d 2a01:111:f403:ca48::a 52.101.103.140 52.101.103.143 52.101.68.29 52.101.68.39	mail-du0pr03cu00102.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-miypr02cu00204.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-db7pr03cu00607.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

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

8 records 193ms

TXT Record
explorum.azurewebsites.net
firebase=explorum-prod-identity
google-site-verification=49ZOQe4KkyEkGpvfWNlDyne7SNMgchpfAHtiZb2bKjY
google-site-verification=z2592YTMlVazx75QMWS8_hN4Kqr9Uzhx2na9N1y4i_w
hosting-site=explorum-prod
ms-domain-verification=f7602cfa-e1c3-4304-aad8-79abf86f49ac
v=spf1 include:_spf.firebasemail.com ~all
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (explorum.dk)
~all (soft fail)	v=spf1 include:_spf.firebasemail.com ~all
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.explorum.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 2026-10-14 18:11:27

www CNAME	explorum-prod.web.app (all on web.app) → 199.36.158.100 2620:0:890::100 (AS54113)
www vs bare domain	Same network explorum.dk: 199.36.158.100 (AS54113) www.explorum.dk: 199.36.158.100 2620:0:890::100 (AS54113)
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u41039087.wl088.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u41039087.wl088.sendgrid.net	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: 4/10 · policy: ~all

error 2 SPF records: receivers must treat that as a permanent error (RFC 7208 §4.5)

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.explorum.dk	YW3OEPso3NqxQ4u3alKWBsuCvy-c_SzHwpaAHy4OcUY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

105ms

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

🏷️ SOA#

0ms

Field	Value
Serial	1
Primary NS (MNAME)	ns1-37.azure-dns.com
Responsible (RNAME)	azuredns-hostmaster@microsoft.com
Refresh	3600s
Retry	300s
Expire	2419200s
Minimum (neg-cache TTL)	300s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

46ms

51ms

35ms

AAAA

39ms

TXT

193ms

CAA

36ms

HTTPS

52ms

TLSA

179ms

SOA

0ms

MTA-STS

70ms

DNSSEC

105ms

SRV

73ms

Total

765ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-02 06:48:31	871ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-25 20:26:23 shown	765ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-02 00:39:08	1063ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-17 09:09:15	3636ms	4 NS 1 A 1 MX	🔓 Insecure