xlb.dk

Records from scan: 2026-06-20 18:42:18 · 1359ms total · last checked 2026-10-19 12:00 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

xlb.dk is a .dk domain served by 4 nameservers (ns1-03.azure-dns.com, ns2-03.azure-dns.net, ns3-03.azure-dns.org and 1 more). It was registered on 24 August 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.50.2.31 is hosted by Microsoft Corporation (AS8075) in The Netherlands. Mail is handled by xlb-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

4 records 77ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1-03.azure-dns.com	13.107.236.3 2603:1061:0:700::3	ns1-03.azure-dns.com ns1-03.azure-dns.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns2-03.azure-dns.net	150.171.21.3 2620:1ec:8ec:700::3	— ns2-03.azure-dns.net	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns3-03.azure-dns.org	204.14.183.3 2a01:111:4000:700::3	ns3-03.azure-dns.org ns3-03.azure-dns.org	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns4-03.azure-dns.info	208.84.5.3 2620:1ec:bda:700::3	ns4-03.azure-dns.info ns4-03.azure-dns.info	AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🌍 A Records#

1 records 68ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.50.2.31	600s	—	AS8075	Microsoft Corporation	20.48.0.0/12	🇳🇱 The Netherlands	Amsterdam

📧 MX Records#

1 records 71ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	xlb-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::9 2a01:111:f403:ca09::20 2a01:111:f403:ca09::e 52.101.68.12 52.101.68.32 52.101.73.11 52.101.73.26	mail-du2pr03cu00102.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-as9pr05cu01302.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 → 40.98.16.83

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 217ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 406ms

TXT Record
MS=ms82509102
v=spf1 ip4:93.165.154.115 ip4:178.23.241.246 ip4:91.144.252.158 include:spf-dxc.xl-byg.dk include:servers.mcsv.net include:sendgrid.net include:spf.protection.outlook.com include:mitcom.dk -all

✉️ SPF#

Policy	Record (xlb.dk)
-all (hard fail)	v=spf1 ip4:93.165.154.115 ip4:178.23.241.246 ip4:91.144.252.158 include:spf-dxc.xl-byg.dk include:servers.mcsv.net include:sendgrid.net include:spf.protection.outlook.com include:mitcom.dk -all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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#

checked 2026-10-13 06:24:20

www CNAME	webapp-urlredirects-p-01.azurewebsites.net (all on azurewebsites.net) → 20.50.2.31 (AS8075)
www vs bare domain	Same network xlb.dk: 20.50.2.31 (AS8075) www.xlb.dk: 20.50.2.31 (AS8075)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 8/10 · policy: -all

error include:spf-dxc.xl-byg.dk has no SPF record: receivers that reach it return permerror (RFC 7208 §5.2)
warn 8 of the 10 allowed DNS lookups used: one more include can break SPF

🔗 TLSA / DANE#

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

🔐 DNSSEC#

208ms

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

🏷️ SOA#

62ms

Field	Value
Serial	1
Primary NS (MNAME)	ns1-03.azure-dns.com
Responsible (RNAME)	azuredns-hostmaster@microsoft.com
Refresh	3600s
Retry	300s
Expire	2419200s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-16 14:56:10

Field	Value
Registrar	Simply.com A/S
Registered	2006-08-24
Expires	2027-04-30 (192d)

🔗 Same registrant#

12 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).

Domain	Registrar
brejnholt-proff.dk	Simply.com A/S
brejnholt-shop.dk	Simply.com A/S
brejnholt.dk	Punktum dk A/S (direct)
brejnholts.dk	Simply.com A/S
pladsstyring.dk	Simply.com A/S
proff-tøj.dk	Simply.com A/S
super-olie.dk	Simply.com A/S
xl-byg-aarhus.dk	Simply.com A/S
xlbt.dk	Simply.com A/S
xlbyg-aarhus.dk	Simply.com A/S
xlbygranders.dk	Simply.com A/S
xlranders.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

77ms

68ms

71ms

AAAA

67ms

TXT

406ms

CAA

100ms

HTTPS

74ms

TLSA

349ms

SOA

62ms

MTA-STS

103ms

DNSSEC

208ms

SRV

217ms

Total

1359ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-06-20 18:42:18 shown	1359ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-18 07:15:53	2985ms	4 NS 1 A 1 MX	🔓 Insecure