surb.dk

Records from scan: 2026-07-13 18:36:31 · 1153ms total · last checked 2026-10-20 13:15 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

surb.dk is a .dk domain served by 2 nameservers (ns1.dnsserver.dk, ns2.dnsserver.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 23.236.62.147 is hosted by Google LLC (AS396982) in United States. Mail is handled by surb-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a 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#

2 records 80ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.dnsserver.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.dnsserver.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 92ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
23.236.62.147	10800s	147.62.236.23.bc.googleusercontent.com	AS396982	Google LLC	23.236.48.0/20	🇺🇸 United States	Council Bluffs

📧 MX Records#

1 records 104ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	10800s	surb-dk.mail.protection.outlook.com	2a01:111:f403:ca04::6 2a01:111:f403:ca04::d 2a01:111:f403:ca09::1 2a01:111:f403:ca09::f 52.101.73.12 52.101.73.28 52.101.73.30 52.101.73.4	mail-db4pr02cu00406.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-am7pr05cu00204.inbound.protection.outlook.com mail-am7pr05cu00306.inbound.protection.outlook.com mail-am0pr83cu00404.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 → 52.98.149.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 128ms

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

📝 TXT Records#

1 records 280ms

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

✉️ SPF#

Policy	Record (surb.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.surb.dk)
p=reject	v=DMARC1; p=reject; adkim=s; aspf=s;

📬 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 05:02:16

www CNAME	www23.wixdns.net (all on wixdns.net) → 34.149.87.45 (AS396982)
www vs bare domain	Same network surb.dk: 23.236.62.147 (AS396982) www.surb.dk: 34.149.87.45 (AS396982)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-surb-dk._domainkey.surbdk.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-surb-dk._domainkey.surbdk.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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

223ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

0ms

Field	Value
Serial	2026071301
Primary NS (MNAME)	ns1.dnsserver.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

80ms

92ms

104ms

AAAA

93ms

TXT

280ms

CAA

99ms

HTTPS

80ms

TLSA

133ms

SOA

0ms

MTA-STS

92ms

DNSSEC

223ms

SRV

128ms

Total

1153ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-07-13 18:36:31 shown	1153ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-10 18:09:07	1246ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-29 03:42:15	824ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 14:24:03	2898ms	2 NS 1 A 1 MX	🔒 Secure