mainbrain.dk

📜 Historical scan 2026-08-26 12:57:37 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

mainbrain.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 20 December 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.114 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mainbrain-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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 50ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 49ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.114	3600s	linux22.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	mainbrain-dk.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca09::7 2a01:111:f403:ca09::a 2a01:111:f403:ca48::a 52.101.103.140 52.101.68.21 52.101.68.39 52.101.68.8	mail-db7pr03cu00601.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-miypr02cu00204.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-du0pr03cu00100.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 → 52.98.154.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 75ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records#

5 records 180ms

TXT Record
apple-domain-verification=PBqlExulxKLROuwm
FXDGRFCSAH._autotask.mainbrain.dk
google-site-verification=oQtkSBoo4zwtYBsxPYTZdb1u2mC8lOPz8oMXd3vXwIA
MS=ms98426009
v=spf1 ip4:91.224.174.53 ip4:94.231.106.191 ip4:195.90.100.46 ip4:193.201.39.143 ip4:193.201.39.3 include:outlook.com ip4:8.12.58.0/24 ip4:8.34.161.0/24 ip4:8.224.10.0/24 ip4:213.212.96.64/27 ip4:118.186.64.32/28 ip4:185.217.59.0/24 ip4:162.244.87.54/32 ip4:46.36.211.197/32 ip4:40.68.36.243 include:servers.mcsv.net ip4:40.68.36.243 include:autotask.net include:mailgun.org include:spfrerouting.xink.io ~all

✉️ SPF#

Policy	Record (mainbrain.dk)
~all (soft fail)	v=spf1 ip4:91.224.174.53 ip4:94.231.106.191 ip4:195.90.100.46 ip4:193.201.39.143 ip4:193.201.39.3 include:outlook.com ip4:8.12.58.0/24 ip4:8.34.161.0/24 ip4:8.224.10.0/24 ip4:213.212.96.64/27 ip4:118.186.64.32/28 ip4:185.217.59.0/24 ip4:162.244.87.54/32 ip4:46.36.211.197/32 ip4:40.68.36.243 include:servers.mcsv.net ip4:40.68.36.243 include:autotask.net include:mailgun.org include:spfrerouting.xink.io ~all

Policy

Record (mainbrain.dk)

~all (soft fail)

v=spf1 ip4:91.224.174.53 ip4:94.231.106.191 ip4:195.90.100.46 ip4:193.201.39.143 ip4:193.201.39.3 include:outlook.com ip4:8.12.58.0/24 ip4:8.34.161.0/24 ip4:8.224.10.0/24 ip4:213.212.96.64/27 ip4:118.186.64.32/28 ip4:185.217.59.0/24 ip4:162.244.87.54/32 ip4:46.36.211.197/32 ip4:40.68.36.243 include:servers.mcsv.net ip4:40.68.36.243 include:autotask.net include:mailgun.org include:spfrerouting.xink.io ~all

📨 DMARC#

Policy	Record (_dmarc.mainbrain.dk)
p=quarantine	v=DMARC1; p=quarantine

📬 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 2026-10-09 11:38:43

www CNAME	mainbrain.dk (all on mainbrain.dk) → 185.21.41.114 (AS48854)
www vs bare domain	Same network mainbrain.dk: 185.21.41.114 (AS48854) www.mainbrain.dk: 185.21.41.114 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

4 found

Selector	CNAME	Key
k1	dkim.mcsv.net	RSA · ~1024 bit below 2048 bit
s1	s1.domainkey.u24651920.wl171.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u24651920.wl171.sendgrid.net	RSA · ~2048 bit
selector2	selector2-mainbrain-dk._domainkey.skifttilmac.onmicrosoft.com	RSA · ~1024 bit below 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: 10/10 · policy: ~all

warn 10 of the 10 allowed DNS lookups used: one more include can break SPF

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.mainbrain.dk	BpIT6aiR_Di7PM_kxjQJgGO3fuXHmUUTV5WMA-1AS04

🔗 TLSA / DANE#

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

🔐 DNSSEC#

80ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026032501
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-07 08:24:43

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1999-12-20
Expires	2031-01-31 (1566d)

📋 WHOIS#

⏱️ Lookup Timing#

50ms

49ms

35ms

AAAA

46ms

TXT

180ms

CAA

59ms

HTTPS

49ms

TLSA

177ms

SOA

0ms

MTA-STS

58ms

DNSSEC

80ms

SRV

75ms

Total

800ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 11:38:43	1045ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-07 08:23:51	1116ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-06 07:17:58	2927ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-06 07:14:22	1271ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-02 05:48:55	619ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 05:17:37	1084ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-25 09:07:27	1199ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 01:08:36	1607ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 12:57:37 shown	800ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 02:45:49	1138ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 00:18:25	940ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-18 02:51:12	2897ms	2 NS 1 A 1 MX	🔒 Secure