`contractbygg.se`

DNSSEC	⚠️ Not signed
A	93.188.2.54^{🇸🇪 LOOPIA93.188.2.0/23 SE-LOOPIA}
		PTR	`webfront4.webcluster.loopia.se`
NS	`dns01.dipcon.com` ⭐
		A	2a00:801:fb:253::4^{🇸🇪 SWIPNET2a00:800::/25 Tele2 IPv6 block In case of improper use originating from our network, please mail or}
			PTR	`dns01.dipcon.com`
		A	193.14.90.50^{🇸🇪 SWIPNET193.12.0.0/14 In case of improper use originating from our network, please mail customer or}
			PTR	`dns01.dipcon.com`
NS	`dns02.ports.se`
		A	2001:19f0:5001:2a:5400:ff:fe38:1e6f^{🇳🇱 AS-VULTR2001:19f0:5000::/38 Vultr Assigned Prefix}
			PTR	`dns02.ports.se`
		A	45.63.42.179^{🇳🇱 AS-VULTR45.63.40.0/22 Vultr Assigned Prefix}
			PTR	`dns02.ports.se`
NS	`dns03.ports.se`
		A	2a04:3540:1000:310:287e:f6ff:fe1d:4789^{🇫🇮 UPCLOUD2a04:3540::/32 -FI-HEL1-IPV6}
			PTR	`dns03.ports.se`
		A	94.237.33.102^{🇫🇮 UPCLOUD94.237.32.0/21 -FI-HEL1-NET4}
			PTR	`dns03.ports.se`
NS	`dns04.ports.net`
		A	2a03:f80:ed15:3ec8::1^{🇦🇹 EDIS-AS-EU2a03:f80:ed15::/48 EDIS GmbH IPv6 Range 1}
			PTR	`dns04.ports.net`
		A	158.255.211.116^{🇦🇹 EDIS-AS-EU158.255.211.0/24 PA-SLASH24-SPACE12-ROUTEAS57169}
			PTR	`dns04.ports.net`
MX	`contractbygg-se.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca09::3^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am6pr04cu00303.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::9^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as8pr04cu00801.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::b^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am7pr05cu00103.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::c^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as8pr05cu00304.inbound.protection.outlook.com`
		A	52.101.73.8^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am0pr04cu00500.inbound.protection.outlook.com`
		A	52.101.73.12^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am4pr0401cu00104.inbound.protection.outlook.com`
		A	52.101.73.15^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am9pr04cu00107.inbound.protection.outlook.com`
		A	52.101.73.26^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as9pr05cu01302.inbound.protection.outlook.com`
TXT	`MS=ms10567562`
TXT	`v=spf1 +ip4:79.138.93.0/24 +ip4:81.8.136.90 +ip4:95.155.201.187 +ip4:46.236.8...`
SOA	`dns01.dipcon.com`registry@ports.net 2024-04-25 #1

`se`

	DNSSEC	🔒 Signed (DS record present)
	NS	`catcher-in-the-rye.nic.se` ⭐
	NS	`a.ns.se`
	NS	`b.ns.se`
	NS	`c.ns.se`
	NS	`f.ns.se`
	NS	`g.ns.se`
	NS	`i.ns.se`
	NS	`m.ns.se`
	NS	`x.ns.se`
	NS	`y.ns.se`
	NS	`z.ns.se`
	TXT	`id:9e3c413d-a49a-4cce-bf7f-106cec15ccb2`
	TXT	`SE zone update: 2026-05-11 00:22:34 +0000 (EPOCH 1778458954) (auto)`
	SOA	`catcher-in-the-rye.nic.se`registry-default@nic.se serial=1778459313

Same first word

contractbygg.se

DNS History

14 records (6 active, 8 former)

●NSdns01.dipcon.com2026-03-23 → 2026-05-11 · 3 obs

○ 2017-06-21 03:41:34
● 2026-03-23 20:13:22
● 2026-05-11 00:39:22

●NSdns02.ports.se2026-03-23 → 2026-05-11 · 3 obs

○ 2017-06-21 03:41:34
● 2026-03-23 20:13:22
● 2026-05-11 00:39:22

●NSdns03.ports.se2026-03-23 → 2026-05-11 · 3 obs

○ 2017-06-21 03:41:34
● 2026-03-23 20:13:22
● 2026-05-11 00:39:22

●NSdns04.ports.net2026-03-23 → 2026-05-11 · 3 obs

○ 2017-06-21 03:41:34
● 2026-03-23 20:13:22
● 2026-05-11 00:39:22

○NSns1.contractbygg.se2007-12-04 → 2007-12-04 · 3 obs

● 2007-12-04 02:19:56
○ 2015-08-20 08:54:06
○ 2026-05-11 00:39:22

○NSns1.infra.se2015-08-20 → 2017-06-21 · 5 obs

○ 2007-12-04 02:19:56
● 2015-08-20 08:54:06
● 2017-06-21 03:41:34
○ 2026-03-23 20:13:22
○ 2026-05-11 00:39:22

○NSns2.contractbygg.se2007-12-04 → 2007-12-04 · 3 obs

● 2007-12-04 02:19:56
○ 2015-08-20 08:54:06
○ 2026-05-11 00:39:22

○NSns2.infra.se2015-08-20 → 2017-06-21 · 5 obs

○ 2007-12-04 02:19:56
● 2015-08-20 08:54:06
● 2017-06-21 03:41:34
○ 2026-03-23 20:13:22
○ 2026-05-11 00:39:22

○NSns3.infra.se2015-08-20 → 2017-06-21 · 5 obs

○ 2007-12-04 02:19:56
● 2015-08-20 08:54:06
● 2017-06-21 03:41:34
○ 2026-03-23 20:13:22
○ 2026-05-11 00:39:22

●MXcontractbygg-se.mail.protection.outlook.com2017-06-21 → 2026-05-11 · 3 obs

○ 2016-11-16 03:08:48
● 2017-06-21 03:41:34
● 2026-05-11 00:39:22

○MXmail.contractbygg.se2007-12-04 → 2007-12-04 · 3 obs

● 2007-12-04 02:19:56
○ 2015-08-20 08:54:06
○ 2026-05-11 00:39:22

○MXspamfighter.infra.se2015-08-20 → 2016-11-16 · 5 obs

○ 2007-12-04 02:19:56
● 2015-08-20 08:54:06
● 2016-11-16 03:08:48
○ 2017-06-21 03:41:34
○ 2026-05-11 00:39:22

○A83.233.72.692015-08-20 → 2017-06-21 · 5 obs

○ 2007-12-04 02:19:56
● 2015-08-20 08:54:06
● 2017-06-21 03:41:34
○ 2026-03-23 20:13:22
○ 2026-05-11 00:39:22

●A93.188.2.542026-03-23 → 2026-05-11 · 3 obs

○ 2017-06-21 03:41:34
● 2026-03-23 20:13:22
● 2026-05-11 00:39:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
se	a.ns.se, b.ns.se, c.ns.se, f.ns.se...	-
contractbygg.se	dns01.dipcon.com, dns02.ports.se, dns03.ports.se, dns04.ports.net	-

✅ Authoritative Response

Server:193.14.90.50

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for contractbygg.se (unsigned zone)

⏱️ Timing

Total: 1404ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`93.188.2.54`
NS	4	`dns03.ports.se, dns01.dipcon.com...`
MX	1	`contractbygg-se.mail.protection.outlook.`
TXT	2	`v=spf1 +ip4:79.138.93.0/24 +ip4:81.8.136, MS=ms10567562`
SOA	1	`dns01.dipcon.com registry.ports.net`

Analysis

IP Addresses

contractbygg.se maps to IP address 93.188.2.54.

Other host names, for instance www.gelnet.se, bjorndolk.se, www.aks.rs, www.ah.se and licon.se share IP numbers with contractbygg.se.

Name Servers

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

contractbygg.se at least partially shares name servers with other domains such as bufab.nl, genesta.lu, beacheslocalfoodnetwork.org, stralfors.mobi and bettingguider.se.

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

contractbygg.se is handled by a single mail server, contractbygg-se.mail.protection.outlook.com.

contractbygg-se.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca09::3, 2a01:111:f403:ca09::9, 2a01:111:f403:ca09::b, 2a01:111:f403:ca09::c, 52.101.73.8, 52.101.73.12, 52.101.73.15 and 52.101.73.26.

contractbygg.se - robtex.com

contractbygg.se

se

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`contractbygg.se`

`se`