offcourse.se - dns.ninja

offcourse.se

DNSSEC🔒 Signed (DS record present)
A2a02:2350:5:106:dd:fc4b:5a5d:626b🇩🇰 ONECOM2a02:2350::/32 One.com A/S
A46.30.215.155🇩🇰 ONECOM46.30.208.0/21 One.com A/S
NSns01.one.com ⭐
A2001:67c:28cc::10ONECOM-INFRA2001:67c:28cc::/48
PTRns01.one.com
A195.206.121.10ONECOM-INFRA195.206.121.0/24
PTRns01.one.com
NSns02.one.com
A2001:67c:3c0::10🇩🇰 ONECOM2001:67c:3c0::/48
PTRns02.one.com
A185.10.11.10ONECOM185.10.11.0/24
PTRns02.one.com
MXmx1.mailpod15-cph3.g1i.one.com ⭐
A104.37.35.36🇩🇰 ONECOM104.37.32.0/21 One.com A/S
PTRmx1.mailpod15-cph3.g1i.one.com
MXmx2.mailpod15-cph3.g1i.one.com ⭐
A104.37.35.37🇩🇰 ONECOM104.37.32.0/21 One.com A/S
PTRmx2.mailpod15-cph3.g1i.one.com
MXmx3.mailpod15-cph3.g1i.one.com ⭐
A104.37.35.38🇩🇰 ONECOM104.37.32.0/21 One.com A/S
PTRmx3.mailpod15-cph3.g1i.one.com
MXmx4.mailpod15-cph3.g1i.one.com ⭐
A104.37.35.39🇩🇰 ONECOM104.37.32.0/21 One.com A/S
PTRmx4.mailpod15-cph3.g1i.one.com
SOAns01.one.comhostmaster@one.com 2026-06-17 #1

se

DNSSEC🔒 Signed (DS record present)
NScatcher-in-the-rye.nic.se ⭐
NSa.ns.se
NSb.ns.se
NSc.ns.se
NSf.ns.se
NSg.ns.se
NSi.ns.se
NSm.ns.se
NSx.ns.se
NSy.ns.se
NSz.ns.se
TXTid:51c3592a-3335-4d6f-8081-6bff669c9f4a
TXTSE zone update: 2026-06-21 18:51:37 +0000 (EPOCH 1782067897) (auto)
SOAcatcher-in-the-rye.nic.seregistry-default@nic.se serial=1782068268

Same first word

offcourse.io
offcourse.dk
offcourse.bike
offcourse.se
offcourse.no
offcourse.biz
offcourse.be
offcourse.com
offcourse.ca
offcourse.de
offcourse.jp
offcourse.in
offcourse.co
offcourse.nl
offcourse.org
offcourse.golf
offcourse.com.tr

Similar names

offsource.com
freofocus.com
courseoff.com
freofocus.com.au
forefocus.com

DNS History

12 records (8 active, 4 former)

20162017201820192020202120222023202420252026NSns01.one.comns02.one.comns1.bipserv.comns2.bipserv.comMXmx1.mailpod15-cph3.g1i.one.commx2.mailpod15-cph3.g1i.one.commx3.mailpod15-cph3.g1i.one.commx4.mailpod15-cph3.g1i.one.commail.offcourse.seA2a02:2350:5:106:dd:fc4b:5a5d:626b46.30.215.155213.180.92.137
●NSns01.one.com2026-06-14 → 2026-06-21 · 3 obs
○ 2016-06-19 11:51:48
● 2026-06-14 20:52:22
● 2026-06-21 19:12:40
●NSns02.one.com2026-06-14 → 2026-06-21 · 3 obs
○ 2016-06-19 11:51:48
● 2026-06-14 20:52:22
● 2026-06-21 19:12:40
○NSns1.bipserv.com2015-08-07 → 2016-02-23 · 4 obs
● 2015-08-07 14:51:10
● 2016-02-23 10:10:32
○ 2016-06-19 11:51:48
○ 2026-06-21 19:12:40
○NSns2.bipserv.com2015-08-07 → 2016-02-23 · 4 obs
● 2015-08-07 14:51:10
● 2016-02-23 10:10:32
○ 2016-06-19 11:51:48
○ 2026-06-21 19:12:40
○MXmail.offcourse.se2015-08-07 → 2016-02-23 · 4 obs
● 2015-08-07 14:51:10
● 2016-02-23 10:10:32
○ 2016-06-19 11:51:48
○ 2026-06-21 19:12:40
●MXmx1.mailpod15-cph3.g1i.one.com2026-06-14 → 2026-06-21 · 3 obs
○ 2016-06-19 11:51:48
● 2026-06-14 20:52:22
● 2026-06-21 19:12:40
●MXmx2.mailpod15-cph3.g1i.one.com2026-06-14 → 2026-06-21 · 3 obs
○ 2016-06-19 11:51:48
● 2026-06-14 20:52:22
● 2026-06-21 19:12:40
●MXmx3.mailpod15-cph3.g1i.one.com2026-06-14 → 2026-06-21 · 3 obs
○ 2016-06-19 11:51:48
● 2026-06-14 20:52:22
● 2026-06-21 19:12:40
●MXmx4.mailpod15-cph3.g1i.one.com2026-06-14 → 2026-06-21 · 3 obs
○ 2016-06-19 11:51:48
● 2026-06-14 20:52:22
● 2026-06-21 19:12:40
○A213.180.92.1372015-08-07 → 2016-02-23 · 4 obs
● 2015-08-07 14:51:10
● 2016-02-23 10:10:32
○ 2016-06-19 11:51:48
○ 2026-06-21 19:12:40
●A2a02:2350:5:106:dd:fc4b:5a5d:626b2026-06-14 → 2026-06-21 · 3 obs
○ 2016-06-19 11:51:48
● 2026-06-14 20:52:22
● 2026-06-21 19:12:40
●A46.30.215.1552026-06-14 → 2026-06-21 · 3 obs
○ 2016-06-19 11:51:48
● 2026-06-14 20:52:22
● 2026-06-21 19:12:40

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
sez.ns.se, f.ns.se, i.ns.se, c.ns.se...-
offcourse.sens01.one.com, ns02.one.com-

✅ Authoritative Response

Server:195.206.121.10

NS records: ns01.one.com, ns02.one.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1891ms | Queries: -

📄 Records

TypeCountSample Data
A146.30.215.155
AAAA12a02:2350:5:106:dd:fc4b:5a5d:626b
NS2ns02.one.com, ns01.one.com
MX4mx2.mailpod15-cph3.g1i.one.com (pri: 10), mx3.mailpod15-cph3.g1i.one.com (pri: 10)...
SOA1ns01.one.com hostmaster.one.com

Analysis

IP Addresses

offcourse.se directs to two IP numbers, 46.30.215.155 and 2a02:2350:5:106:dd:fc4b:5a5d:626b

Two other host names, along with avision.dk, olesenmail.com and keramati.de, also share IP numbers with offcourse.se.

Name Servers

DNS delegation for offcourse.se points to two name servers: ns01.one.com and ns02.one.com.

offcourse.se shares its NS records with other domains, for example sneftrup.net, christianokkels.com, gavor.dk and two others.

ns01.one.com directs to 195.206.121.10 and 2001:67c:28cc::10. ns02.one.com directs to 185.10.11.10 and 2001:67c:3c0::10. Each host name carries two IP addresses.

Mail Servers

Four mail servers handle email for offcourse.se: mx1.mailpod15-cph3.g1i.one.com, mx2.mailpod15-cph3.g1i.one.com, mx3.mailpod15-cph3.g1i.one.com and mx4.mailpod15-cph3.g1i.one.com.

There is at least a partial MX overlap between offcourse.se and other domains, including boaevent.se, topwashcenter.se, alexon.se and two others.

The hosts mx1.mailpod15-cph3.g1i.one.com, mx2.mailpod15-cph3.g1i.one.com, mx3.mailpod15-cph3.g1i.one.com and mx4.mailpod15-cph3.g1i.one.com all resolve to exactly one IP address each: 104.37.35.36, 104.37.35.37, 104.37.35.38 and 104.37.35.39 respectively.