`biacore.se`

DNSSEC	⚠️ Not signed
NS	`pdns1.ultradns.net` ⚠️ Not in zone NS records
		A	2001:502:f3ff::1^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`pdns1.ultradns.net`
		A	204.74.108.1^{🇺🇸 MAINT-ID-12008204.74.108.0/24 Neustar}
			PTR	`pdns1.ultradns.net`
NS	`pdns2.ultradns.net` ⚠️ Not in zone NS records
		A	2610:a1:1014::1^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`pdns2.ultradns.net`
		A	204.74.109.1^{🇺🇸 MAINT-ID-12008204.74.109.0/24 Neustar}
			PTR	`pdns2.ultradns.net`
NS	`pdns4.ultradns.org` ⚠️ Not in zone NS records
		A	2001:502:4612::1^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`pdns4.ultradns.org`
		A	199.7.69.1^{🇺🇸 MAINT-ID-12008199.7.69.0/24 Neustar}
			PTR	`pdns4.ultradns.org`
NS	`pdns5.ultradns.info` ⚠️ Not in zone NS records
		A	2610:a1:1016::1^{🇺🇸 MAINT-ID-120082610:a1:1016::/48 Neustar}
			PTR	`pdns5.ultradns.info`
		A	204.74.114.1^{🇺🇸 MAINT-ID-12008204.74.114.0/24 Neustar}
			PTR	`pdns5.ultradns.info`
NS	`pdns6.ultradns.co.uk` ⚠️ Not in zone NS records
		A	2610:a1:1017::1^{🇺🇸 MAINT-ID-120082610:a1:1017::/48 Neustar}
			PTR	`pdns6.ultradns.co.uk`
		A	204.74.115.1^{🇺🇸 MAINT-ID-12008204.74.115.0/24 Neustar}
			PTR	`pdns6.ultradns.co.uk`

`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	`SE zone update: 2026-08-04 21:44:39 +0000 (EPOCH 1785879879) (auto)`
	TXT	`id:755cc3fe-4487-4265-9a05-be3abc95da10`
	SOA	`catcher-in-the-rye.nic.se`registry-default@nic.se serial=1785880226

Same first word

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biacore.org

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DNS History

10 records (5 active, 5 former)

○NSns1.biacore.com2007-09-28 → 2007-09-28 · 3 obs

● 2007-09-28 10:17:40
○ 2015-06-24 04:33:10
○ 2026-08-04 22:56:04

○NSns2.biacore.com2007-09-28 → 2007-09-28 · 3 obs

● 2007-09-28 10:17:40
○ 2015-06-24 04:33:10
○ 2026-08-04 22:56:04

●NSpdns1.ultradns.net2015-06-24 → 2026-08-04 · 3 obs

○ 2007-09-28 10:17:40
● 2015-06-24 04:33:10
● 2026-08-04 22:56:04

●NSpdns2.ultradns.net2015-06-24 → 2026-08-04 · 3 obs

○ 2007-09-28 10:17:40
● 2015-06-24 04:33:10
● 2026-08-04 22:56:04

●NSpdns4.ultradns.org2015-06-24 → 2026-08-04 · 3 obs

○ 2007-09-28 10:17:40
● 2015-06-24 04:33:10
● 2026-08-04 22:56:04

●NSpdns5.ultradns.info2015-06-24 → 2026-08-04 · 3 obs

○ 2007-09-28 10:17:40
● 2015-06-24 04:33:10
● 2026-08-04 22:56:04

●NSpdns6.ultradns.co.uk2015-06-24 → 2026-08-04 · 3 obs

○ 2007-09-28 10:17:40
● 2015-06-24 04:33:10
● 2026-08-04 22:56:04

○A198.169.188.72015-06-24 → 2016-06-18 · 5 obs

○ 2007-09-28 10:17:40
● 2015-06-24 04:33:10
● 2016-06-18 23:44:06
○ 2017-05-29 12:36:54
○ 2026-08-04 22:56:04

○A198.169.189.72017-05-29 → 2017-05-29 · 4 obs

○ 2016-06-18 23:44:06
● 2017-05-29 12:36:54
○ 2026-06-14 13:51:22
○ 2026-08-04 22:56:04

○A80.72.134.142007-09-28 → 2007-09-28 · 3 obs

● 2007-09-28 10:17:40
○ 2015-06-24 04:33:10
○ 2026-08-04 22:56:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
se	y.ns.se, c.ns.se, a.ns.se, g.ns.se...	-
biacore.se	pdns5.ultradns.info, pdns6.ultradns.co.uk, pdns4.ultradns.org, pdns2.ultradns.net...	-

✅ Authoritative Response

Server:204.74.109.1

NS records: pdns5.ultradns.info, pdns6.ultradns.co.uk, pdns4.ultradns.org, pdns2.ultradns.net, pdns1.ultradns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for biacore.se (unsigned zone)

⏱️ Timing

Total: 912ms | Queries: -

📄 Records

Type	Count	Sample Data

Analysis

Name Servers

biacore.se has five name servers, which are pdns5.ultradns.info, pdns1.ultradns.net, pdns2.ultradns.net and two others.

biacore.se partially shares its NS delegation with several other domains, including pacificcoastelevator.com, expedia-fun.eu, thermofisher.company and two others.

In DNS configurations, these name servers often share authority with pdns3.ultradns.org, pdns4.ultradns.org, pdns6.ultradns.co.uk and 7 other name servers.

Hostnames that resolve to two IP addresses:

pdns5.ultradns.info has two IP addresses: 204.74.114.1 and 2610:a1:1016::1.

pdns1.ultradns.net has two IP addresses: 204.74.108.1 and 2001:502:f3ff::1.

pdns2.ultradns.net has two IP addresses: 204.74.109.1 and 2610:a1:1014::1.

pdns4.ultradns.org has two IP addresses: 199.7.69.1 and 2001:502:4612::1.

pdns6.ultradns.co.uk has two IP addresses: 204.74.115.1 and 2610:a1:1017::1.