understack.dk - robtex.com

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

understack.dk

DNSSEC⚠️ Not signed
A2606:4700:3032::6815:1746🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:d17d🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.23.70Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.209.125🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NStanner.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2c61🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtanner.ns.cloudflare.com
A2803:f800:50::6ca2:c361🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRtanner.ns.cloudflare.com
A2a06:98c1:50::ac40:2361🇺🇸 Cloudflare2a06:98c1:50::/45
PTRtanner.ns.cloudflare.com
A108.162.195.97🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtanner.ns.cloudflare.com
A162.159.44.97Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtanner.ns.cloudflare.com
A172.64.35.97🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtanner.ns.cloudflare.com
NStess.ns.cloudflare.com
A2606:4700:50::adf5:3ae3🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtess.ns.cloudflare.com
A2803:f800:50::6ca2:c0e3🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRtess.ns.cloudflare.com
A2a06:98c1:50::ac40:20e3🇺🇸 Cloudflare2a06:98c1:50::/45
PTRtess.ns.cloudflare.com
A108.162.192.227🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtess.ns.cloudflare.com
A172.64.32.227🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtess.ns.cloudflare.com
A173.245.58.227🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtess.ns.cloudflare.com
MXmx.simply.com ⭐
A94.231.106.20🇩🇰 team-blue-denmark94.231.96.0/20 ZITCOM A/S
PTRmx.simply.com
TXTgoogle-site-verification=Lpcz4BYpMQB6t83ytLXONT9x4H1Rgk95CgoyjlI-T_k
TXTresend-domain-verification=423b46cc3c672d8a881b745e0a7d03c4
TXTv=spf1 include:spf.simply.com -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.23.70, 172.67.209.125
IPv6 hints2606:4700:3032::6815:1746, 2606:4700:3036::ac43:d17d
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=194, name=cloudflare-ech.com
SOAtanner.ns.cloudflare.comdns@cloudflare.com serial=2416063535

dk

DNSSEC🔒 Signed (DS record present)
NSb.nic.dk ⭐
NSc.nic.dk
NSh.nic.dk
NSl.nic.dk
NSs.nic.dk
NSt.nic.dk
TXTDK zone updateEpoch 1791180360localtime Mon Oct 5 08:06:00 2026gmtime Mon Oc...
SOAb.nic.dktech@punktum.dk serial=1791180360

Same first word

understack.it
understack.dk
understack.workers.dev
understack.dev
understack.com
understack.site

Similar names

track(0x6e756465)s.co
stackunder.website
dunetracks.com
andestruck.com.ar
dantuckers.com
track(0x6e756465)s.net
(0x6e616b6564)crust.ph
dusknectar.online
naturdecks.co
skncurated.shop

Previous names

underskog.dk
underskov.dk
underskoven.dk
underskrifter.dk
underskriftindsamlinger.dk
underskriftsindsamling.dk
underskriftsindsamlinger.dk
underskriv-digitalt.dk
underskriv.dk
underskrivdigitalt.dk
underskrive.dk
underskrivmedmitid.dk
underslottet.dk
undersoegelse.dk
undersofaen.dk
undersogelse.dk
undersogelser.dk
undersolen.dk
undersolenfestival.dk

Next names

understandingbiologicmedicine.dk
understandingbiologics.dk
understatement.dk
understedvand.dk
understedvognmandsforretning.dk
understjernerne.dk
understoettelsesfonden.dk
understoryproductions.dk
understreg.dk
understroem.dk
understromlydstudie.dk
understrup.dk
understrygning-af-tag.dk
undertag.dk
undertage.dk
undertaget.dk
undertaker-brande.dk
undertaker-herning.dk
undertaker-skjern.dk
undertaker.dk

DNS History

11 records (7 active, 4 former)

NStanner.ns.cloudflare.comtess.ns.cloudflare.comns1.simply.comns2.simply.comns3.simply.comMXmx.simply.comA104.21.23.70172.67.209.1252606:4700:3032::6815:17462606:4700:3036::ac43:d17d216.198.79.1
○NSns1.simply.com2026-09-20 → 2026-09-20 · 3 obs
● 2026-09-20 00:07:38
○ 2026-09-28 14:28:58
○ 2026-10-05 06:33:58
○NSns2.simply.com2026-09-20 → 2026-09-20 · 3 obs
● 2026-09-20 00:07:38
○ 2026-09-28 14:28:58
○ 2026-10-05 06:33:58
○NSns3.simply.com2026-09-20 → 2026-09-20 · 3 obs
● 2026-09-20 00:07:38
○ 2026-09-28 14:28:58
○ 2026-10-05 06:33:58
●NStanner.ns.cloudflare.com2026-09-28 → 2026-10-05 · 3 obs
○ 2026-09-20 00:07:38
● 2026-09-28 14:28:58
● 2026-10-05 06:33:58
●NStess.ns.cloudflare.com2026-09-28 → 2026-10-05 · 3 obs
○ 2026-09-20 00:07:38
● 2026-09-28 14:28:58
● 2026-10-05 06:33:58
●MXmx.simply.com2026-09-20 → 2026-10-05 · 2 obs
● 2026-09-20 00:07:38
● 2026-10-05 06:33:58
●A104.21.23.702026-09-28 → 2026-10-05 · 3 obs
○ 2026-09-20 00:07:38
● 2026-09-28 14:28:58
● 2026-10-05 06:33:58
●A172.67.209.1252026-09-28 → 2026-10-05 · 3 obs
○ 2026-09-20 00:07:38
● 2026-09-28 14:28:58
● 2026-10-05 06:33:58
○A216.198.79.12026-09-20 → 2026-09-20 · 3 obs
● 2026-09-20 00:07:38
○ 2026-09-28 14:28:58
○ 2026-10-05 06:33:58
●A2606:4700:3032::6815:17462026-09-28 → 2026-10-05 · 3 obs
○ 2026-09-20 00:07:38
● 2026-09-28 14:28:58
● 2026-10-05 06:33:58
●A2606:4700:3036::ac43:d17d2026-09-28 → 2026-10-05 · 3 obs
○ 2026-09-20 00:07:38
● 2026-09-28 14:28:58
● 2026-10-05 06:33:58

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dkb.nic.dk, c.nic.dk, h.nic.dk, l.nic.dk...-
understack.dktess.ns.cloudflare.com, tanner.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.58.227

NS records: tess.ns.cloudflare.com, tanner.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for understack.dk (unsigned zone)

⏱️ Timing

Total: 1264ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.209.125, 104.21.23.70
AAAA22606:4700:3032::6815:1746, 2606:4700:3036::ac43:d17d
NS2tanner.ns.cloudflare.com, tess.ns.cloudflare.com
MX1mx.simply.com (pri: 10)
TXT3google-site-verification=Lpcz4BYpMQB6t83, resend-domain-verification=423b46cc3c672...
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1tanner.ns.cloudflare.com dns.cloudflare.

Analysis

IP Addresses

understack.dk resolves to four IP addresses: 104.21.23.70, 172.67.209.125, 2606:4700:3032::6815:1746 and 2606:4700:3036::ac43:d17d.

Additional host names — energsweep.world, adamatbaacilik.com.tr, sieutool.net and two others — share IP numbers with understack.dk.

Name Servers

understack.dk uses two name servers for its delegation: tanner.ns.cloudflare.com and tess.ns.cloudflare.com.

understack.dk shares its name server setup with other domains, including ys044.pages.dev, yl263.pages.dev, da-kas-com.pages.dev and two others.

understack.dk partially shares its NS delegation with several other domains, including pisangtogel-asli.pages.dev, fourdenim.info, plugadx.com and two others.

These name servers are regularly seen alongside maisie.ns.cloudflare.com and jerome.ns.cloudflare.com as name servers.

Host names with 6 IP numbers:

Hostname tanner.ns.cloudflare.com directs to 108.162.195.97, 162.159.44.97 and 172.64.35.97 along with 3 other IP addresses.

Hostname tess.ns.cloudflare.com directs to 108.162.192.227, 172.64.32.227 and 173.245.58.227 along with 3 other IP addresses.

Mail Servers

understack.dk has one mail server: mx.simply.com.

understack.dk shares the same mail server setup as other domains, including thisted-skorstensfejer.dk, stikkelorum.nl, heavenlyhomes.dk and two others.

mx.simply.com directs to just one IP number, 94.231.106.20.