rum21.dk

📜 Historical scan 2026-06-18 08:14:22 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rum21.dk is a .dk domain served by 2 nameservers (jean.ns.cloudflare.com, jermaine.ns.cloudflare.com). It was registered on 2 December 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.18.30.120 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by rum21-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 2034ms

Nameserver	IP addresses	PTR	ASN / ISP
jean.ns.cloudflare.com	108.162.192.121 172.64.32.121 173.245.58.121 2606:4700:50::adf5:3a79 2803:f800:50::6ca2:c079 2a06:98c1:50::ac40:2079	jean.ns.cloudflare.com jean.ns.cloudflare.com jean.ns.cloudflare.com jean.ns.cloudflare.com jean.ns.cloudflare.com jean.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
jermaine.ns.cloudflare.com	108.162.195.157 162.159.44.157 172.64.35.157 2606:4700:58::a29f:2c9d 2803:f800:50::6ca2:c39d 2a06:98c1:50::ac40:239d	jermaine.ns.cloudflare.com jermaine.ns.cloudflare.com jermaine.ns.cloudflare.com jermaine.ns.cloudflare.com jermaine.ns.cloudflare.com jermaine.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 2030ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.18.30.120	—	—	AS13335	Cloudflare, Inc.	104.16.0.0/14	—	—
104.18.31.120	—	—	AS13335	Cloudflare, Inc.	104.16.0.0/14	—	—

📧 MX Records#

1 records 2031ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	rum21-dk.mail.protection.outlook.com	2a01:111:f403:ca04::5 2a01:111:f403:ca04::6 2a01:111:f403:ca09::4 2a01:111:f403:ca09::7 52.101.68.21 52.101.68.39 52.101.68.8 52.101.73.16	mail-db3pr0202cu00205.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-as2pr05cu00100.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 → 40.101.76.168

🔷 AAAA Records (IPv6)#

2 records 2032ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700::6812:1e78	—	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700::6812:1f78	—	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—

🔐 HTTPS Records#

1 records 2027ms

Priority	Target	SvcParams
1 service	.	alpn="h2" ipv4hint=104.18.30.120,104.18.31.120 ipv6hint=2606:4700::6812:1e78,2606:4700::6812:1f78

📝 TXT Records#

3 records 2191ms

TXT Record
google-site-verification=F--T7wM23Q4f9JFmU6T_5AIxcXnlKZoZl7x6OwYNrnc
MS=ms53177886
v=spf1 include:spf.protection.outlook.com include:spf.mandrillapp.com include:amazonses.com include:spf.dixa.io a:mail.logtrade.info -all

✉️ SPF#

Policy	Record (rum21.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.mandrillapp.com include:amazonses.com include:spf.dixa.io a:mail.logtrade.info -all

📨 DMARC#

Policy	Record (_dmarc.rum21.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:dmarcreports@rum21.dk

📬 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 2026-10-22 02:33:29

www	104.18.30.120 104.18.31.120 2606:4700::6812:1e78 2606:4700::6812:1f78 (AS13335) (address records, no CNAME)
www vs bare domain	Same network rum21.dk: 104.18.30.120 104.18.31.120 2606:4700::6812:1e78 2606:4700::6812:1f78 (AS13335) www.rum21.dk: 104.18.30.120 104.18.31.120 2606:4700::6812:1e78 2606:4700::6812:1f78 (AS13335)
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u9880187.wl188.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u9880187.wl188.sendgrid.net	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: 6/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

2049ms

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

🏷️ SOA#

2027ms

Field	Value
Serial	2407091343
Primary NS (MNAME)	jean.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-22 03:02:17

Field	Value
Registrar	Abion AB
Registered	2010-12-02
Expires	2026-12-31 (69d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

2034ms

2030ms

2031ms

AAAA

2032ms

TXT

2191ms

CAA

2031ms

HTTPS

2027ms

TLSA

1200ms

SOA

2027ms

MTA-STS

30ms

DNSSEC

2049ms

SRV

69ms

Total

4028ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-22 02:33:29	668ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-05 12:42:53	2107ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 12:12:15	762ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 04:55:51	797ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-26 04:52:07	1104ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-25 19:08:40	1526ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-24 18:32:19	886ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-23 17:59:22	4788ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-20 14:17:14	12221ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-07 14:03:00	2125ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-03 06:42:58	1450ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-23 06:24:53	3775ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-22 12:31:23	946ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 16:07:31	3217ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-18 08:14:22 shown	4028ms	2 NS 2 A 1 MX	🔓 Insecure