opt.dk - robtex.com

opt.dk

DNSSEC⚠️ Not signed
A2606:4700:3034::6815:158a🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::ac43:c718🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.21.138Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.199.24🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSnico.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2c93🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnico.ns.cloudflare.com
A2803:f800:50::6ca2:c393🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRnico.ns.cloudflare.com
A2a06:98c1:50::ac40:2393🇺🇸 Cloudflare2a06:98c1:50::/45
PTRnico.ns.cloudflare.com
A108.162.195.147🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnico.ns.cloudflare.com
A162.159.44.147Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnico.ns.cloudflare.com
A172.64.35.147🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnico.ns.cloudflare.com
NSstephane.ns.cloudflare.com
A2606:4700:50::a29f:2670🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRstephane.ns.cloudflare.com
A2803:f800:50::6ca2:c270🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRstephane.ns.cloudflare.com
A2a06:98c1:50::ac40:2270🇺🇸 Cloudflare2a06:98c1:50::/45
PTRstephane.ns.cloudflare.com
A108.162.194.112🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRstephane.ns.cloudflare.com
A162.159.38.112Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRstephane.ns.cloudflare.com
A172.64.34.112🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRstephane.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.21.138, 172.67.199.24
IPv6 hints2606:4700:3034::6815:158a, 2606:4700:3034::ac43:c718
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=14, name=cloudflare-ech.com
SOAnico.ns.cloudflare.comdns@cloudflare.com serial=2402332002

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 1778334301localtime Sat May 9 15:45:01 2026gmtime Sat Ma...
SOAb.nic.dktech@punktum.dk serial=1778334301

Subdomains

mail.opt.dk

Same first word

opt.to
opt.by
opt.services
opt.com.ru
opt.mobi
opt.pl
opt.hu
opt.moda
opt.nc
opt.co.il
opt.tv
opt.cc
opt.name
opt.la
opt.ro
opt.se
opt.gg
opt.be
opt.ru
opt.ac
opt.im
opt.kr
opt.wiki
opt.net.au
opt.com.pl
opt.ee
opt.msk.ru
opt.cz
opt.pf
opt.sa
opt.hr
opt.kz
opt.ac.cn
opt.co
opt.com.mx
opt.mr
opt.it
opt.net
opt.io
opt.tips
opt.at
opt.tm
opt.ie
opt.de
opt.cn
opt.city
opt.su
opt.me
opt.pt
opt.no
opt.fr
opt.gr
opt.si
opt.life
opt.cv.ua
opt.st
opt.fyi
opt.zone
opt.ae
opt.hk
opt.expert
opt.co.jp
opt.com
opt.mx
opt.eu
opt.co.nz
opt.biz
opt.com.cn
opt.fi
opt.clinic
opt.solutions
opt.cat
opt.legal
opt.nl
opt.dk
opt.ne.jp
opt.uz
opt.sh
opt.network
opt.com.tw
opt.info
opt.vn.ua
opt.org
opt.center
opt.bio

Similar names

pto.com
top.st
pto.ch
top.com.br
pot.us
top.altervista.org
top.lu
top.at
tpo.org
top.tc
top.su
otp.ee
otp.li
tpo.ca
top.dp.ua
top.la
pot.chat
top.s3-website-us-east-1.amazonaws.com
pot.gr
top.tirol
pot.tv
pto.eu
top.construction
top.lk
pot.life
top.football
top.watch
otp.com.vn
pot.cz
top.black
pot.com
pto.se
pot.is
pot.gov.pl
tpo.fi
top.ba
pot.co
top.cl
pto.be
top.hk
top.soccer
top.kim
top.kz
pot.biz
otp.sh
top.world
pto.services
otp.cat
tpo.org.sg
top.vision
top.org
otp.ua
top.ie
top.cm
top.uk
top.ua
top.com.pl
top.com.qa
otp.nl
otp.lakas.hu
pot.recipes
top.shoes
top.management
pto.no
pot.ph
top.com
pot.bet
top.me
top.club
otp.fr
top.com.ph
pot.nu
pot.de
top.biz
tpo.or.jp
pto.tw
otp.com
top.id
top.org.ua
top.in
top.partners
otp.be
top.digital
pto.wa.gov.au
tpo.om
tpo.org.uk
top.show
otp.blue
otp.fi
top.domains
pto.us
tpo.mx
otp.it
pto.ru
pot.live
top.supplies
tpo.fr
top.ag
top.co
top.sk
top.com.cn
tpo.com.cn
top.lv
top.run
top.wtf
top.az
tpo.com
top.global
top.eu
otp.chat
pot.in
otp.ca
top.directory
tpo.jp
top.ai
top.au
top.app.br
tpo.es

DNS History

26 records (6 active, 20 former)

20162017201820192020202120222023202420252026NSnico.ns.cloudflare.comstephane.ns.cloudflare.comns.talkactive.netns01.one.comns02.one.comns1.gratisdns.dkns2.gratisdns.dkns2.talkactive.netns3.gratisdns.dkns3.talkactive.netns4.gratisdns.dkns5.gratisdns.dkMXmail.opt.dkmx1.pub.mailpod7-cph3.one.commx2.pub.mailpod7-cph3.one.commx3.pub.mailpod7-cph3.one.comA104.21.21.138172.67.199.242606:4700:3034::6815:158a2606:4700:3034::ac43:c718172.64.80.1195.128.174.1252606:4700:130:436c:6f75:6466:6c61:72652a02:2350:5:103:7080:0:530a:d17646.30.213.19495.217.219.6
●NSnico.ns.cloudflare.com2026-02-26 → 2026-05-09 · 3 obs
○ 2021-04-19 21:40:36
● 2026-02-26 06:35:34
● 2026-05-09 14:04:02
○NSns.talkactive.net2015-08-01 → 2017-01-10 · 4 obs
● 2015-08-01 04:16:52
● 2017-01-10 08:04:26
○ 2018-09-10 08:56:24
○ 2026-05-09 14:04:02
○NSns01.one.com2018-09-10 → 2018-09-10 · 4 obs
○ 2017-01-10 08:04:26
● 2018-09-10 08:56:24
○ 2021-04-19 21:40:36
○ 2026-05-09 14:04:02
○NSns02.one.com2018-09-10 → 2018-09-10 · 4 obs
○ 2017-01-10 08:04:26
● 2018-09-10 08:56:24
○ 2021-04-19 21:40:36
○ 2026-05-09 14:04:02
○NSns1.gratisdns.dk2021-04-19 → 2021-04-19 · 4 obs
○ 2018-09-10 08:56:24
● 2021-04-19 21:40:36
○ 2026-02-26 06:35:34
○ 2026-05-09 14:04:02
○NSns2.gratisdns.dk2021-04-19 → 2021-04-19 · 4 obs
○ 2018-09-10 08:56:24
● 2021-04-19 21:40:36
○ 2026-02-26 06:35:34
○ 2026-05-09 14:04:02
○NSns2.talkactive.net2015-08-01 → 2017-01-10 · 4 obs
● 2015-08-01 04:16:52
● 2017-01-10 08:04:26
○ 2018-09-10 08:56:24
○ 2026-05-09 14:04:02
○NSns3.gratisdns.dk2021-04-19 → 2021-04-19 · 4 obs
○ 2018-09-10 08:56:24
● 2021-04-19 21:40:36
○ 2026-02-26 06:35:34
○ 2026-05-09 14:04:02
○NSns3.talkactive.net2015-08-01 → 2017-01-10 · 4 obs
● 2015-08-01 04:16:52
● 2017-01-10 08:04:26
○ 2018-09-10 08:56:24
○ 2026-05-09 14:04:02
○NSns4.gratisdns.dk2021-04-19 → 2021-04-19 · 4 obs
○ 2018-09-10 08:56:24
● 2021-04-19 21:40:36
○ 2026-02-26 06:35:34
○ 2026-05-09 14:04:02
○NSns5.gratisdns.dk2021-04-19 → 2021-04-19 · 4 obs
○ 2018-09-10 08:56:24
● 2021-04-19 21:40:36
○ 2026-02-26 06:35:34
○ 2026-05-09 14:04:02
●NSstephane.ns.cloudflare.com2026-02-26 → 2026-05-09 · 3 obs
○ 2021-04-19 21:40:36
● 2026-02-26 06:35:34
● 2026-05-09 14:04:02
○MXmail.opt.dk2015-08-01 → 2017-01-10 · 4 obs
● 2015-08-01 04:16:52
● 2017-01-10 08:04:26
○ 2018-09-10 08:56:24
○ 2026-05-09 14:04:02
○MXmx1.pub.mailpod7-cph3.one.com2018-09-10 → 2018-09-10 · 4 obs
○ 2017-01-10 08:04:26
● 2018-09-10 08:56:24
○ 2021-04-19 21:40:36
○ 2026-05-09 14:04:02
○MXmx2.pub.mailpod7-cph3.one.com2018-09-10 → 2018-09-10 · 4 obs
○ 2017-01-10 08:04:26
● 2018-09-10 08:56:24
○ 2021-04-19 21:40:36
○ 2026-05-09 14:04:02
○MXmx3.pub.mailpod7-cph3.one.com2018-09-10 → 2018-09-10 · 4 obs
○ 2017-01-10 08:04:26
● 2018-09-10 08:56:24
○ 2021-04-19 21:40:36
○ 2026-05-09 14:04:02
●A104.21.21.1382026-02-26 → 2026-05-09 · 5 obs
○ 2021-04-19 21:40:36
● 2026-02-26 06:35:34
○ 2026-03-03 11:36:34
● 2026-03-05 20:20:06
● 2026-05-09 14:04:02
○A172.64.80.12026-03-03 → 2026-03-03 · 4 obs
○ 2026-02-26 06:35:34
● 2026-03-03 11:36:34
○ 2026-03-05 20:20:06
○ 2026-05-09 14:04:02
●A172.67.199.242026-02-26 → 2026-05-09 · 5 obs
○ 2021-04-19 21:40:36
● 2026-02-26 06:35:34
○ 2026-03-03 11:36:34
● 2026-03-05 20:20:06
● 2026-05-09 14:04:02
○A195.128.174.1252015-08-01 → 2017-01-10 · 4 obs
● 2015-08-01 04:16:52
● 2017-01-10 08:04:26
○ 2018-09-10 08:56:24
○ 2026-05-09 14:04:02
○A2606:4700:130:436c:6f75:6466:6c61:72652026-03-03 → 2026-03-03 · 4 obs
○ 2026-02-26 06:35:34
● 2026-03-03 11:36:34
○ 2026-03-05 20:20:06
○ 2026-05-09 14:04:02
●A2606:4700:3034::6815:158a2026-02-26 → 2026-05-09 · 5 obs
○ 2021-04-19 21:40:36
● 2026-02-26 06:35:34
○ 2026-03-03 11:36:34
● 2026-03-05 20:20:06
● 2026-05-09 14:04:02
●A2606:4700:3034::ac43:c7182026-02-26 → 2026-05-09 · 5 obs
○ 2021-04-19 21:40:36
● 2026-02-26 06:35:34
○ 2026-03-03 11:36:34
● 2026-03-05 20:20:06
● 2026-05-09 14:04:02
○A2a02:2350:5:103:7080:0:530a:d1762018-09-10 → 2018-09-10 · 4 obs
○ 2017-01-10 08:04:26
● 2018-09-10 08:56:24
○ 2021-04-19 21:40:36
○ 2026-05-09 14:04:02
○A46.30.213.1942018-09-10 → 2018-09-10 · 4 obs
○ 2017-01-10 08:04:26
● 2018-09-10 08:56:24
○ 2021-04-19 21:40:36
○ 2026-05-09 14:04:02
○A95.217.219.62021-04-19 → 2021-04-19 · 4 obs
○ 2018-09-10 08:56:24
● 2021-04-19 21:40:36
○ 2026-02-26 06:35:34
○ 2026-05-09 14:04:02

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dkb.nic.dk, c.nic.dk, h.nic.dk, l.nic.dk...12 records
opt.dknico.ns.cloudflare.com, stephane.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.34.112

NS records: nico.ns.cloudflare.com, stephane.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opt.dk (unsigned zone)

⏱️ Timing

Total: 755ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.199.24, 104.21.21.138
AAAA22606:4700:3034::ac43:c718, 2606:4700:3034::6815:158a
NS2nico.ns.cloudflare.com, stephane.ns.cloudflare.com
MX1. (pri: 0)
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1nico.ns.cloudflare.com dns.cloudflare.co

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (b.nic.dk, c.nic.dk, h.nic.dk...)

Analysis

Hierarchy

opt.dk is the parent of mail.opt.dk.

IP Addresses

Four IP numbers are pointed to by opt.dk: 2606:4700:3034::6815:158a, 2606:4700:3034::ac43:c718, 104.21.21.138 and 172.67.199.24.

other host names including www.artpulsion.com, finalescope.co.uk, genamiveisanalytics.click, www.achievingoeradi.shop and song.me.uk share IP numbers with opt.dk.

Name Servers

opt.dk is delegated to two name servers nico.ns.cloudflare.com and stephane.ns.cloudflare.com.

opt.dk shares the same name server setup as other domains, for instance cleanmylink.com, scnr.com, kunlun.co, pl-oferta68314.icu and reapptive.com.

opt.dk at least partially shares name servers with other domains, for instance vion.bz.it, 6222js.com, capitalmarketspecialist.com, kiaceitn.store and cyclecarriage.com.

These name servers are commonly used with julissa.ns.cloudflare.com, aitana.ns.cloudflare.com and jean.ns.cloudflare.com.

Host names with six IP numbers:

Host name nico.ns.cloudflare.com points to: 2606:4700:58::a29f:2c93, 2803:f800:50::6ca2:c393, 2a06:98c1:50::ac40:2393, 108.162.195.147, 162.159.44.147 and 172.64.35.147.

Host name stephane.ns.cloudflare.com points to: 2606:4700:50::a29f:2670, 2803:f800:50::6ca2:c270, 2a06:98c1:50::ac40:2270, 108.162.194.112, 162.159.38.112 and 172.64.34.112.