firstmail.dk

📜 Historical scan 2026-07-02 00:50:10 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

firstmail.dk is a .dk domain served by 4 nameservers (ns1.bdm.microsoftonline.com, ns2.bdm.microsoftonline.com, ns3.bdm.microsoftonline.com and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 168.61.97.117 is hosted by Microsoft Corporation (AS8075) in Ireland. Mail is handled by firstmail-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 40ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.bdm.microsoftonline.com	13.107.236.208 2603:1061:0:700::d0	ns1-208.azure-dns.com ns1-208.azure-dns.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns2.bdm.microsoftonline.com	150.171.21.208 2620:1ec:8ec:700::d0	ns2-208.azure-dns.net ns2-208.azure-dns.net	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns3.bdm.microsoftonline.com	204.14.183.208 2a01:111:4000:700::d0	ns3-208.azure-dns.org ns3-208.azure-dns.org	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns4.bdm.microsoftonline.com	208.84.5.208 2620:1ec:bda:700::d0	ns4-208.azure-dns.info ns4-208.azure-dns.info	AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🌍 A Records#

1 records 45ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
168.61.97.117	1800s	—	AS8075	Microsoft Corporation	168.61.0.0/16	🇮🇪 Ireland	Dublin

📧 MX Records#

1 records 44ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	firstmail-dk.mail.protection.outlook.com	2a01:111:f403:ca04::d 2a01:111:f403:ca09::1 2a01:111:f403:ca09::3 2a01:111:f403:ca09::9 52.101.68.36 52.101.73.11 52.101.73.19 52.101.73.24	mail-db6pr03cu00105.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-as8pr05cu00300.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 → 40.104.116.24

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

2 records 57ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	autodiscover.egebirk.dk
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

3 records 191ms

TXT Record
MS=ms59483253
mscid=kNm+P2aIO1IpUzqpTOi++FgnaQZaWIcfTAxmia8hM5EWleSKGv7ne7/AnhrfUiMG0igf13xyppV+xerggAEthQ==
v=spf1 a:mailgw.sirrar.dk include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (firstmail.dk)
-all (hard fail)	v=spf1 a:mailgw.sirrar.dk include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.firstmail.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:dmarc@egebirk.dk,mailto:dmarc_agg@vali.email; ruf=mailto:dmarc@egebirk.dk; sp=quarantine; fo=1;

📬 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 2026-10-12 05:34:32

www CNAME	az-web-01.sirrar.dk (all on sirrar.dk) → 168.61.97.117 (AS8075)
www vs bare domain	Same network firstmail.dk: 168.61.97.117 (AS8075) www.firstmail.dk: 168.61.97.117 (AS8075)
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-firstmail-dk._domainkey.egebirk.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-firstmail-dk._domainkey.egebirk.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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

63ms

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

🏷️ SOA#

30ms

Field	Value
Serial	1
Primary NS (MNAME)	ns1.bdm.microsoftonline.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#

40ms

45ms

44ms

AAAA

44ms

TXT

191ms

CAA

38ms

HTTPS

39ms

TLSA

210ms

SOA

30ms

MTA-STS

66ms

DNSSEC

63ms

SRV

57ms

Total

990ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 22:12:01	1209ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-28 02:39:09	954ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-02 00:50:10 shown	990ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-17 09:23:07	921ms	4 NS 1 A 1 MX	🔓 Insecure