`leidenscience.com`

DNSSEC	🔒 Signed (DS record present)
A	132.229.92.35^{🇳🇱 SURFNET-NL132.229.0.0/16 RUL-NL}
NS	`arachne.leidenuniv.nl` ⭐
		A	172.22.101.10^{UNSPECIFIED160.0.0.0/3}
NS	`ns1.surfnet.nl`
		A	2001:610:1:800a:192:87:106:101^{🇳🇱 SURFNET-NL2001:610::/29 SURFnet IPv6 block}
			PTR	`ns1.surfnet.nl`
		A	192.87.106.101^{🇳🇱 SURFNET-NL192.87.0.0/16 SURFnet CIDR Block IV}
			PTR	`ns1.surfnet.nl`
NS	`ns2.surfnet.nl`
		A	2001:610:3:200a:192:87:36:2^{🇳🇱 SURFNET-NL2001:610::/29 SURFnet IPv6 block}
			PTR	`ns2.surfnet.nl`
		A	192.87.36.2^{🇳🇱 SURFNET-NL192.87.0.0/16 SURFnet CIDR Block IV}
			PTR	`ns2.surfnet.nl`
NS	`ns3.surfnet.nl`
		A	2001:610:0:800c:195:169:124:71^{🇳🇱 SURFNET-NL2001:610::/29 SURFnet IPv6 block}
			PTR	`ns3.surfnet.nl`
		A	195.169.124.71^{🇳🇱 SURFNET-NL195.169.0.0/16 SURFnet CIDR Block VI}
SOA	`arachne.leidenuniv.nl`postmaster@leidenuniv.nl serial=1847

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1776058567

Subdomains

www.leidenscience.com

Same first word

leidenscience.com

DNS History

13 records (5 active, 8 former)

●NSarachne.leidenuniv.nl2026-03-21 → 2026-04-13 · 3 obs

○ 2017-10-29 22:15:12
● 2026-03-21 17:31:14
● 2026-04-13 05:40:50

●NSns1.surfnet.nl2026-03-21 → 2026-04-13 · 3 obs

○ 2017-10-29 22:15:12
● 2026-03-21 17:31:14
● 2026-04-13 05:40:50

○NSns1.xel.nl2016-12-17 → 2017-10-29 · 4 obs

● 2016-12-17 07:38:18
● 2017-10-29 22:15:12
○ 2026-03-21 17:31:14
○ 2026-04-13 05:40:50

●NSns2.surfnet.nl2026-03-21 → 2026-04-13 · 3 obs

○ 2017-10-29 22:15:12
● 2026-03-21 17:31:14
● 2026-04-13 05:40:50

○NSns2.xel.nl2016-12-17 → 2017-10-29 · 4 obs

● 2016-12-17 07:38:18
● 2017-10-29 22:15:12
○ 2026-03-21 17:31:14
○ 2026-04-13 05:40:50

●NSns3.surfnet.nl2026-03-21 → 2026-04-13 · 3 obs

○ 2017-10-29 22:15:12
● 2026-03-21 17:31:14
● 2026-04-13 05:40:50

○NSns3.xel.nl2016-12-17 → 2017-10-29 · 4 obs

● 2016-12-17 07:38:18
● 2017-10-29 22:15:12
○ 2026-03-21 17:31:14
○ 2026-04-13 05:40:50

○MXmx1.xel.nl2016-12-17 → 2017-10-29 · 4 obs

● 2016-12-17 07:38:18
● 2017-10-29 22:15:12
○ 2026-03-21 17:31:14
○ 2026-04-13 05:40:50

○MXmx2.xel.nl2016-12-17 → 2017-10-29 · 4 obs

● 2016-12-17 07:38:18
● 2017-10-29 22:15:12
○ 2026-03-21 17:31:14
○ 2026-04-13 05:40:50

○MXmx3.xel.nl2016-12-17 → 2017-10-29 · 4 obs

● 2016-12-17 07:38:18
● 2017-10-29 22:15:12
○ 2026-03-21 17:31:14
○ 2026-04-13 05:40:50

○A132.229.13.352017-10-29 → 2017-10-29 · 4 obs

○ 2016-12-17 07:38:18
● 2017-10-29 22:15:12
○ 2026-03-21 17:31:14
○ 2026-04-13 05:40:50

●A132.229.92.352026-03-21 → 2026-04-13 · 3 obs

○ 2017-10-29 22:15:12
● 2026-03-21 17:31:14
● 2026-04-13 05:40:50

○A82.94.246.522016-12-17 → 2016-12-17 · 3 obs

● 2016-12-17 07:38:18
○ 2017-10-29 22:15:12
○ 2026-04-13 05:40:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
leidenscience.com	ns1.surfnet.nl, ns2.surfnet.nl, ns3.surfnet.nl	-

✅ Authoritative Response

Server:195.169.124.71

NS records: ns1.surfnet.nl, ns2.surfnet.nl, ns3.surfnet.nl

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 567ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`132.229.92.35`
NS	3	`ns1.surfnet.nl, ns3.surfnet.nl...`
SOA	1	`arachne.leidenuniv.nl postmaster.leidenu`

Analysis

Hierarchy

www.leidenscience.com is a child of leidenscience.com.

IP Addresses

leidenscience.com resolves to one IP number: 132.229.92.35.

Other host names, for instance brainandeducationlab.nl, science.leidenuniv.nl, globalsociolinguistics.nl, gorlaeusgebouw.nl and tinbergenlecture.com share IP numbers with leidenscience.com.

Name Servers

leidenscience.com delegates to four name servers: arachne.leidenuniv.nl, ns1.surfnet.nl, ns2.surfnet.nl and ns3.surfnet.nl.

leidenscience.com at least partially shares name servers with other domains, including 25.169.195.in-addr.arpa, hogeschoolzuid.nl, 64.97.145.in-addr.arpa, test.surfgroepen.nl and 13.169.195.in-addr.arpa.

these name servers are commonly used alongside the name servers ns1.zurich.surf.net, ns6.eur.nl, ns-ext-01.wur.nl, dex1001.umcutrecht.nl and dex2001.umcutrecht.nl.

Host names with two IPs:

ns1.surfnet.nl points to 2001:610:1:800a:192:87:106:101 and 192.87.106.101

ns2.surfnet.nl points to 2001:610:3:200a:192:87:36:2 and 192.87.36.2

ns3.surfnet.nl points to 2001:610:0:800c:195:169:124:71 and 195.169.124.71

Host names with one IP:

arachne.leidenuniv.nl points to 172.22.101.10

leidenscience.com - robtex.com