nerd911.dk

📜 Historical scan 2026-09-24 03:59:23 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

nerd911.dk is a .dk domain served by 2 nameservers (erin.ns.cloudflare.com, nash.ns.cloudflare.com). It was registered on 11 January 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.42.244 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is DNSSEC-signed and validates, 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 34ms

Nameserver	IP addresses	PTR	ASN / ISP
erin.ns.cloudflare.com	108.162.192.113 172.64.32.113 173.245.58.113 2606:4700:50::adf5:3a71 2803:f800:50::6ca2:c071 2a06:98c1:50::ac40:2071	erin.ns.cloudflare.com erin.ns.cloudflare.com erin.ns.cloudflare.com erin.ns.cloudflare.com erin.ns.cloudflare.com erin.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
nash.ns.cloudflare.com	108.162.193.209 172.64.33.209 173.245.59.209 2606:4700:58::adf5:3bd1 2803:f800:50::6ca2:c1d1 2a06:98c1:50::ac40:21d1	nash.ns.cloudflare.com nash.ns.cloudflare.com nash.ns.cloudflare.com nash.ns.cloudflare.com nash.ns.cloudflare.com nash.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
104.21.42.244	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.213.111	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 49ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	173.194.222.27 2a00:1450:4010:c0f::1a 2a00:1450:4010:c0f::1a	lo-in-f27.1e100.net lt-in-f26.1e100.net lt-in-x1a.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1b	lcdels-in-f27.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1b	mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	300s	alt3.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1b	so-in-f26.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	alt4.aspmx.l.google.com	108.177.125.26 2404:6800:4008:c01::1a	tp-in-f26.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.56
🔶 Autoconfig	discovery.nerd911.dk → 77.233.252.6

🔷 AAAA Records (IPv6)#

2 records 33ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::6815:2af4	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:d56f	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 34ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.42.244,172.67.213.111 ech=AEX+DQBBfQAgACCK0/W35gUlzutdfJWYmm+BU1Xs4VEXEIjo0oPtjeIuYwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:2af4,2606:4700:3037::ac43:d56f

🔌 SRV Records#

5 records 69ms

Service	Port	Target
_xmpp-server._tcp	5269	xmpp-server3.l.google.com
_xmpp-server._tcp	5269	xmpp-server.l.google.com
_xmpp-server._tcp	5269	xmpp-server1.l.google.com
_xmpp-server._tcp	5269	xmpp-server4.l.google.com
_xmpp-server._tcp	5269	xmpp-server2.l.google.com

📝 TXT Records#

6 records 177ms

TXT Record
apple-domain-verification=1XvQ8I33AlIm2NVH
google-site-verification=LnmwogcweG7jbuapPUUBdSgelZNTkXGhBFKweqtL1s4
google-site-verification=MWkAghV3z1Y-aFw_pey3dKi1itbz_aK_a3Zmnq1j-Wg
MS=ms78162267
protonmail-verification=c703fe83e4b6054cd17eaf7b95a856da55ab6fd8
v=spf1 include:_spf.google.com include:spf.protection.outlook.com include:_spf.protonmail.ch include:_spf.smtp.com include:sendgrid.net ip4:185.140.164.57 ip4:77.233.252.0/27 -all

✉️ SPF#

Policy	Record (nerd911.dk)
-all (hard fail)	v=spf1 include:_spf.google.com include:spf.protection.outlook.com include:_spf.protonmail.ch include:_spf.smtp.com include:sendgrid.net ip4:185.140.164.57 ip4:77.233.252.0/27 -all

📨 DMARC#

Policy	Record (_dmarc.nerd911.dk)
p=reject	v=DMARC1; p=reject; pct=100; rua=mailto:7978e4f27aa340c19f587dd62deb61b7@dmarc-reports.cloudflare.net,mailto:dmarc_agg@vali.email; ruf=mailto:dmarc_agg@vali.email; sp=none; aspf=r;

📬 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 2026-10-15 17:41:31

www	104.21.42.244 172.67.213.111 2606:4700:3033::6815:2af4 2606:4700:3037::ac43:d56f (AS13335) (address records, no CNAME)
www vs bare domain	Same network nerd911.dk: 104.21.42.244 172.67.213.111 2606:4700:3033::6815:2af4 2606:4700:3037::ac43:d56f (AS13335) www.nerd911.dk: 104.21.42.244 172.67.213.111 2606:4700:3033::6815:2af4 2606:4700:3037::ac43:d56f (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

3 found

Selector	CNAME	Key
google	—	RSA · ~2048 bit
s1	s1.domainkey.u16073062.wl063.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u16073062.wl063.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: 7/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.nerd911.dk	I2BVCO2o_zBoLVhFkVsmmGMSsL9Nkz5GDkaeWXED-oI

🔗 TLSA / DANE#

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

🔐 DNSSEC#

111ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2415470362
Primary NS (MNAME)	erin.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-15 17:53:22

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2001-01-11
Expires	2027-03-31 (164d)

🔗 Same registrant#

16 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).

Domain	Registrar
afoss.dk	Simply.com A/S
aigym.dk	Key-Systems GmbH
bay-consult.dk	Punktum dk A/S (direct)
bhv2.dk	Punktum dk A/S (direct)
brock-didriksen.dk	Punktum dk A/S (direct)
bwbp.dk	Punktum dk A/S (direct)
homaizi.dk	Punktum dk A/S (direct)
meretezacho.dk	Punktum dk A/S (direct)
nerdweb.dk	Punktum dk A/S (direct)
nnoo.dk	Simply.com A/S
pourquoi.dk	Punktum dk A/S (direct)
radbs.dk	Punktum dk A/S (direct)
rebeccaelbek.dk	Punktum dk A/S (direct)
scantrenddesign.dk	Punktum dk A/S (direct)
skovgraensen.dk	Punktum dk A/S (direct)
traveljustlinde.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

34ms

49ms

AAAA

33ms

TXT

177ms

CAA

47ms

HTTPS

34ms

TLSA

106ms

SOA

0ms

MTA-STS

74ms

DNSSEC

111ms

SRV

69ms

Total

1006ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-15 17:41:31	622ms	2 NS 2 A 5 MX	🔒 Secure
2026-10-08 08:08:00	4578ms	2 NS 2 A 5 MX	🔒 Secure
2026-10-02 06:28:13	1236ms	2 NS 2 A 5 MX	🔒 Secure
2026-09-28 05:46:09	1725ms	2 NS 2 A 5 MX	🔒 Secure
2026-09-24 03:59:23 shown	1006ms	2 NS 2 A 5 MX	🔒 Secure
2026-09-16 13:42:44	1373ms	2 NS 2 A 5 MX	🔒 Secure
2026-09-10 09:22:00	1175ms	2 NS 2 A 5 MX	🔒 Secure
2026-09-08 09:18:38	1271ms	2 NS 2 A 5 MX	🔒 Secure
2026-09-06 13:24:30	2400ms	2 NS 2 A 5 MX	🔒 Secure
2026-08-23 06:22:59	10627ms	2 NS 2 A 5 MX	🔒 Secure
2026-08-21 05:58:20	1619ms	2 NS 2 A 5 MX	🔒 Secure
2026-08-19 02:31:12	6229ms	2 NS 2 A 5 MX	🔒 Secure
2026-08-17 20:04:12	1652ms	2 NS 2 A 5 MX	🔒 Secure
2026-08-16 01:10:23	1672ms	2 NS 2 A 5 MX	🔒 Secure
2026-08-13 20:19:28	6596ms	2 NS 2 A 5 MX	🔒 Secure
2026-07-27 11:48:17	2973ms	2 NS 2 A 5 MX	🔒 Secure
2026-07-24 09:39:09	1980ms	2 NS 2 A 5 MX	🔒 Secure
2026-07-16 09:24:54	1590ms	2 NS 2 A 5 MX	🔒 Secure
2026-07-03 20:32:58	12166ms	2 NS 1 A 5 MX	🔒 Secure
2026-07-02 20:01:24	1485ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-26 23:23:48	1170ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-20 21:30:05	1136ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-18 04:18:27	47185ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-18 04:01:50	3139ms	2 NS 1 A 5 MX	🔒 Secure