rum21.dk

📜 Historical scan 2026-08-25 19:08:40 · ← 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 29ms

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 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.18.30.120	300s	—	AS13335	Cloudflare, Inc.	104.16.0.0/14	—	—
104.18.31.120	300s	—	AS13335	Cloudflare, Inc.	104.16.0.0/14	—	—

📧 MX Records#

1 records 26ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	rum21-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::5 2a01:111:f403:ca09::7 2a01:111:f403:ca09::8 52.101.103.143 52.101.68.25 52.101.73.11 52.101.73.8	mail-dbapr03cu00100.inbound.protection.outlook.com mail-db3pr0202cu00205.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-am0pr04cu00500.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 → 40.104.116.56

🔷 AAAA Records (IPv6)#

2 records 33ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700::6812:1e78	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700::6812:1f78	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—

🔐 HTTPS Records#

1 records 39ms

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#

4 records 142ms

TXT Record
google-site-verification=F--T7wM23Q4f9JFmU6T_5AIxcXnlKZoZl7x6OwYNrnc
google-site-verification=GmrW7SW-6jzcJcdWrHUqnk0btksp39Kp0pkpUrB26hg
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

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.rum21.dk	F-V0NG3F68a5UxsVs1-ZGvUQ8iiUDnwc-TeQKAw6On8
TXT	_acme-challenge.rum21.dk	MMPcNgFxyoYtgZ0ltq17mlgbCp5Hmf6quhoWR8FzMYw
TXT	_acme-challenge.rum21.dk	p-2RNQp6V4-oTcrycLROQCHIuaLSSj9f8ZDW_jn7-Wc

🔗 TLSA / DANE#

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

🔐 DNSSEC#

103ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2413130299
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#

29ms

32ms

26ms

AAAA

33ms

TXT

142ms

CAA

36ms

HTTPS

39ms

TLSA

889ms

SOA

0ms

MTA-STS

39ms

DNSSEC

103ms

SRV

71ms

Total

1526ms

🕐 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 shown	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	4028ms	2 NS 2 A 1 MX	🔓 Insecure