contrib.dk

📜 Historical scan 2026-08-02 14:12:09 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

contrib.dk is a .dk domain served by 2 nameservers (deb.ns.cloudflare.com, salvador.ns.cloudflare.com). It was registered on 13 July 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.55.46 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by contrib-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 30ms

Nameserver	IP addresses	PTR	ASN / ISP
deb.ns.cloudflare.com	108.162.192.92 172.64.32.92 173.245.58.92 2606:4700:50::adf5:3a5c 2803:f800:50::6ca2:c05c 2a06:98c1:50::ac40:205c	deb.ns.cloudflare.com deb.ns.cloudflare.com deb.ns.cloudflare.com deb.ns.cloudflare.com deb.ns.cloudflare.com deb.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
salvador.ns.cloudflare.com	108.162.195.100 162.159.44.100 172.64.35.100 2606:4700:58::a29f:2c64 2803:f800:50::6ca2:c364 2a06:98c1:50::ac40:2364	salvador.ns.cloudflare.com salvador.ns.cloudflare.com salvador.ns.cloudflare.com salvador.ns.cloudflare.com salvador.ns.cloudflare.com salvador.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 49ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.55.46	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.144.135	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
5	3600s	contrib-dk.mail.protection.outlook.com	2a01:111:f403:ca04::a 2a01:111:f403:ca09::6 2a01:111:f403:ca09::9 2a01:111:f403:ca09::c 52.101.68.0 52.101.68.8 52.101.73.11 52.101.73.6	mail-du0pr03cu00102.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-am6pr04cu00306.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 → 40.104.116.40

🔷 AAAA Records (IPv6)#

2 records 40ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:372e	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:9087	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 37ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.55.46,172.67.144.135 ech=AEX+DQBBfQAgACATCz+hHsHxTByYJH93iebkwe6FSs5P6ov01mgMuv3SfwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:372e,2606:4700:3035::ac43:9087

📝 TXT Records#

2 records 198ms

TXT Record
MS=5650A8652C787449AF142F349ADB0D0113A4E23A
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.contrib.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:dmarc@contrib.dk

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

11 records 80ms

Flags	Tag	Value
0	issue	comodoca.com
0	issue	digicert.com; cansignhttpexchanges=yes
0	issue	letsencrypt.org
0	issue	pki.goog; cansignhttpexchanges=yes
0	issue	sectigo.com
0	issue	ssl.com
0	issuewild	comodoca.com
0	issuewild	digicert.com; cansignhttpexchanges=yes
0	issuewild	letsencrypt.org
0	issuewild	pki.goog; cansignhttpexchanges=yes
0	issuewild	ssl.com

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-12 06:36:04

www	104.21.55.46 172.67.144.135 2606:4700:3031::6815:372e 2606:4700:3035::ac43:9087 (AS13335) (address records, no CNAME)
www vs bare domain	Same network contrib.dk: 104.21.55.46 172.67.144.135 2606:4700:3031::6815:372e 2606:4700:3035::ac43:9087 (AS13335) www.contrib.dk: 104.21.55.46 172.67.144.135 2606:4700:3031::6815:372e 2606:4700:3035::ac43:9087 (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Delete signal: the zone asks the registry to remove its DS (go insecure) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-contrib-dk._domainkey.contribdk.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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

2050ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2411002275
Primary NS (MNAME)	deb.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-10 23:03:37

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2011-07-13
Expires	2027-07-31 (285d)

📋 WHOIS#

⏱️ Lookup Timing#

30ms

49ms

31ms

AAAA

40ms

TXT

198ms

CAA

80ms

HTTPS

37ms

TLSA

1294ms

SOA

0ms

MTA-STS

51ms

DNSSEC

2050ms

SRV

58ms

Total

4574ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 06:36:04	3374ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-27 19:43:48	1825ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-22 00:33:13	1634ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-14 22:06:26	1867ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-11 15:27:32	954ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-25 13:19:10	2458ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-21 11:25:54	1829ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-16 13:50:53	7353ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-02 14:12:09 shown	4574ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-17 15:24:56	1403ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-09 05:32:11	3827ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-24 09:56:28	2407ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-16 22:10:06	1150ms	2 NS 2 A 1 MX	🔓 Insecure