rbk.nu - robtex.com

rbk.nu

DNSSEC⚠️ Not signed
A84.19.144.139🇸🇪 CANDIDATOR-AB84.19.144.0/21
NSdns01.dipcon.com ⭐
A2a00:801:fb:253::4🇸🇪 SWIPNET2a00:800::/25 Tele2 IPv6 block In case of improper use originating from our network, please mail or
PTRdns01.dipcon.com
A193.14.90.50🇸🇪 SWIPNET193.12.0.0/14 In case of improper use originating from our network, please mail customer or
PTRdns01.dipcon.com
NSdns02.ports.se
A2001:19f0:5001:2a:5400:ff:fe38:1e6f🇳🇱 AS-VULTR2001:19f0:5000::/38 Vultr Assigned Prefix
PTRdns02.ports.se
A45.63.42.179🇳🇱 AS-VULTR45.63.40.0/22 Vultr Assigned Prefix
PTRdns02.ports.se
NSdns03.ports.se
A2a04:3540:1000:310:287e:f6ff:fe1d:4789🇫🇮 UPCLOUD2a04:3540::/32 -FI-HEL1-IPV6
PTRdns03.ports.se
A94.237.33.102🇫🇮 UPCLOUD94.237.32.0/21 -FI-HEL1-NET4
PTRdns03.ports.se
NSdns04.ports.net
A2a03:f80:ed15:3ec8::1🇦🇹 EDIS-AS-EU2a03:f80:ed15::/48 EDIS GmbH IPv6 Range 1
PTRdns04.ports.net
A158.255.211.116🇦🇹 EDIS-AS-EU158.255.211.0/24 PA-SLASH24-SPACE12-ROUTEAS57169
PTRdns04.ports.net
MXrbk-nu.mail.protection.outlook.com ⭐
A52.101.68.0🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db3pr0202cu00100.inbound.protection.outlook.com
A52.101.68.21🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db4pr02cu00205.inbound.protection.outlook.com
A52.101.73.8🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-am0pr04cu00500.inbound.protection.outlook.com
A52.101.73.24🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-as8pr05cu00300.inbound.protection.outlook.com
TXTxD8U/aFZNhpy0Zmrj8C588wDTLTLA7DpzXN82vWxQfhziRcf+6eM9Bilqz5NvVb3h8HzoELPzrZTX...
TXTv=spf1 ip4:88.131.97.144/32
TXTMS=ms75778167
SOAdns01.dipcon.comregistry@ports.net 2024-10-04 #0

nu

DNSSEC🔒 Signed (DS record present)
NScatcher-in-the-rye.nic.nu ⭐
NSa.ns.nu
NSc.ns.nu
NSd.ns.nu
NSm.ns.nu
NSy.ns.nu
NSz.ns.nu
TXTNU zone update: 2026-03-29 10:44:30 +0000 (EPOCH 1774781070) (auto)
TXTid:71129a7d-6a26-4593-bddf-8abade559737
SOAcatcher-in-the-rye.nic.nuhostmaster@nic.nu serial=1774781174

Same first word

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Similar names

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brk.eu
bkr.pt
kbr.se
rkb.es
rkb.co.jp
kbr.co.id
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kbr.construction
kbr.de

DNS History

16 records (6 active, 10 former)

20162017201820192020202120222023202420252026NSdns01.dipcon.comdns02.ports.sedns03.ports.sedns04.ports.netnse1.dcinf.sense1.edb.sense2.dcinf.sense2.edb.sense3.dcinf.sense3.edb.sense4.edb.seMXrbk-nu.mail.protection.outlook.comsmtp05.svensktnaringsliv.sesmtp06.svensktnaringsliv.seA84.19.144.13962.20.6.174
●NSdns01.dipcon.com2026-03-26 → 2026-03-29 · 3 obs
○ 2020-10-08 15:39:04
● 2026-03-26 22:37:34
● 2026-03-29 11:01:12
●NSdns02.ports.se2026-03-26 → 2026-03-29 · 3 obs
○ 2020-10-08 15:39:04
● 2026-03-26 22:37:34
● 2026-03-29 11:01:12
●NSdns03.ports.se2026-03-26 → 2026-03-29 · 3 obs
○ 2020-10-08 15:39:04
● 2026-03-26 22:37:34
● 2026-03-29 11:01:12
●NSdns04.ports.net2026-03-26 → 2026-03-29 · 3 obs
○ 2020-10-08 15:39:04
● 2026-03-26 22:37:34
● 2026-03-29 11:01:12
○NSnse1.dcinf.se2017-08-20 → 2020-10-08 · 5 obs
○ 2016-12-19 21:11:38
● 2017-08-20 13:35:30
● 2020-10-08 15:39:04
○ 2026-03-26 22:37:34
○ 2026-03-29 11:01:12
○NSnse1.edb.se2015-08-01 → 2020-10-08 · 6 obs
● 2015-08-01 17:28:30
● 2016-12-19 21:11:38
○ 2017-08-20 13:35:30
● 2020-10-08 15:39:04
○ 2026-03-26 22:37:34
○ 2026-03-29 11:01:12
○NSnse2.dcinf.se2017-08-20 → 2020-10-08 · 5 obs
○ 2016-12-19 21:11:38
● 2017-08-20 13:35:30
● 2020-10-08 15:39:04
○ 2026-03-26 22:37:34
○ 2026-03-29 11:01:12
○NSnse2.edb.se2015-08-01 → 2016-12-19 · 4 obs
● 2015-08-01 17:28:30
● 2016-12-19 21:11:38
○ 2017-08-20 13:35:30
○ 2026-03-29 11:01:12
○NSnse3.dcinf.se2017-08-20 → 2020-10-08 · 5 obs
○ 2016-12-19 21:11:38
● 2017-08-20 13:35:30
● 2020-10-08 15:39:04
○ 2026-03-26 22:37:34
○ 2026-03-29 11:01:12
○NSnse3.edb.se2016-06-10 → 2016-12-19 · 5 obs
○ 2016-01-30 15:41:06
● 2016-06-10 22:50:20
● 2016-12-19 21:11:38
○ 2017-08-20 13:35:30
○ 2026-03-29 11:01:12
○NSnse4.edb.se2015-11-23 → 2015-11-23 · 4 obs
○ 2015-08-01 17:28:30
● 2015-11-23 08:49:28
○ 2016-01-30 15:41:06
○ 2026-03-29 11:01:12
●MXrbk-nu.mail.protection.outlook.com2015-08-01 → 2026-03-29 · 5 obs
● 2015-08-01 17:28:30
○ 2015-11-23 08:49:28
○ 2017-08-20 13:35:30
● 2020-10-08 15:39:04
● 2026-03-29 11:01:12
○MXsmtp05.svensktnaringsliv.se2015-11-23 → 2017-08-20 · 5 obs
○ 2015-08-01 17:28:30
● 2015-11-23 08:49:28
● 2017-08-20 13:35:30
○ 2020-10-08 15:39:04
○ 2026-03-29 11:01:12
○MXsmtp06.svensktnaringsliv.se2015-11-23 → 2017-08-20 · 5 obs
○ 2015-08-01 17:28:30
● 2015-11-23 08:49:28
● 2017-08-20 13:35:30
○ 2020-10-08 15:39:04
○ 2026-03-29 11:01:12
○A62.20.6.1742015-08-01 → 2020-10-08 · 4 obs
● 2015-08-01 17:28:30
● 2020-10-08 15:39:04
○ 2026-03-26 22:37:34
○ 2026-03-29 11:01:12
●A84.19.144.1392026-03-26 → 2026-03-29 · 3 obs
○ 2020-10-08 15:39:04
● 2026-03-26 22:37:34
● 2026-03-29 11:01:12

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
num.ns.nu, z.ns.nu, c.ns.nu, d.ns.nu...-
rbk.nudns01.dipcon.com, dns02.ports.se, dns03.ports.se, dns04.ports.net-

✅ Authoritative Response

Server:94.237.33.102

NS records: dns01.dipcon.com, dns02.ports.se, dns03.ports.se, dns04.ports.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rbk.nu (unsigned zone)

⏱️ Timing

Total: 1422ms | Queries: -

📄 Records

TypeCountSample Data
A184.19.144.139
NS4dns02.ports.se, dns03.ports.se...
MX1rbk-nu.mail.protection.outlook.com (pri:
TXT3MS=ms75778167, v=spf1 ip4:88.131.97.144/32...
SOA1dns01.dipcon.com registry.ports.net

Analysis

IP Addresses

rbk.nu points to a single IP number: 84.19.144.139.

Other host names, for instance godsedpavpmarknaden.se, www.fairplaybygg.se, www.bf.se, eda.se and verendus.co.uk share IP numbers with rbk.nu.

Name Servers

rbk.nu is delegated to four name servers: dns01.dipcon.com, dns04.ports.net, dns02.ports.se and dns03.ports.se.

rbk.nu at least partially shares name servers with other domains, for instance spotify.in, cognosis.net, hidealite.pl, beddoc.se and betpuls.com.

Host names with two IP numbers:

dns01.dipcon.com points to: 2a00:801:fb:253::4 and 193.14.90.50.

dns04.ports.net points to: 2a03:f80:ed15:3ec8::1 and 158.255.211.116.

dns02.ports.se points to: 2001:19f0:5001:2a:5400:ff:fe38:1e6f and 45.63.42.179.

dns03.ports.se points to: 2a04:3540:1000:310:287e:f6ff:fe1d:4789 and 94.237.33.102.

Mail Servers

rbk.nu is handled by a single mail server, rbk-nu.mail.protection.outlook.com.

rbk-nu.mail.protection.outlook.com resolves to four IPs: 52.101.68.0, 52.101.68.21, 52.101.73.8 and 52.101.73.24.