Domain report: iisg.nl

Registration

info

.nl country-code · SURF B.V.

TLD: .nl (country-code)
ICANN policies apply: no
Registrar: SURF B.V.
Registered: 23 May 1994
Last changed: 9 October 2026
Status: active
Registry nameservers: ns0.socialhistoryservices.org, ns1.surfnet.nl, ns1.zurich.surf.net
RDAP server: https://rdap.sidn.nl/

i

.nl is a country-code TLD (ccTLD)

Country-code TLD: governed by its local registry under national policy, not by an ICANN contract. Registrar accreditation, dispute resolution and RDAP/WHOIS rules are set by the registry.

#1
✓ TLD delegated and signed #2

.nl is delegated in the root zone and DNSSEC-signed.
i

Expiry date not published

The registry does not publish the expiry date in RDAP. Check it with your registrar.

#3
i

No transfer lock

The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.

#4
✓ Registry and delegation match #5

The nameservers registered at the registry are the ones published in DNS.

info

ns0.socialhistoryservices.org, ns1.surfnet.nl, ns1.zurich.surf.net

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: ns0.socialhistoryservices.org, ns1.surfnet.nl, ns1.zurich.surf.net
NS in the zone: ns0.socialhistoryservices.org, ns1.surfnet.nl, ns1.zurich.surf.net

Nameserver	Addresses	Network (AS)	Glue
ns0.socialhistoryservices.org	195.169.88.250	AS1103 SURFNET-NL - SURF B.V., NL	-
ns1.surfnet.nl	192.87.106.101 2001:610:1:800a:192:87:106:101	AS1103 SURFNET-NL - SURF B.V., NL AS1103 SURFNET-NL - SURF B.V., NL	192.87.106.101 2001:610:1:800a:192:87:106:101
ns1.zurich.surf.net	195.176.255.9 2001:620:0:9::1103	AS559 Switch - SWITCH, CH AS559 Switch - SWITCH, CH	-

✓ 3 nameservers #6

Delegated to ns0.socialhistoryservices.org, ns1.surfnet.nl, ns1.zurich.surf.net.
✓ Parent and zone agree #7

The parent delegation and the zone's NS records list the same nameservers.
✓ No glue needed #8

All nameservers are outside the zone, so no glue records are needed.
✓ All names resolve #9

Every nameserver name has an address and is not an alias.
✓ Nameservers in different networks #10

The nameservers are spread over 3 IPv4 /24s and 2 IPv6 /48s.
✓ 2 autonomous systems #11

The nameservers are spread over: AS1103 (SURFNET-NL - SURF B.V., NL): 3 addresses; AS559 (Switch - SWITCH, CH): 2 addresses.
✓ Nameserver names under 3 TLDs #12

Nameserver names use the TLDs .net, .nl, .org.
i

Partly IPv6

These nameservers have no IPv6 address: ns0.socialhistoryservices.org.

#13

warn

5 of 5 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns0.socialhistoryservices.org 195.169.88.250	NOERROR, 10 ms, authoritative	no	yes / yes	refused	9.18.39-0ubuntu0.22.04.7-Ubuntu
ns1.surfnet.nl 192.87.106.101	NOERROR, 10 ms, authoritative	no	yes / yes	refused	This is a SURFnet nameserver - dns-beheer@surfnet.nl
ns1.surfnet.nl 2001:610:1:800a:192:87:106:101	NOERROR, 10 ms, authoritative	no	yes / yes	refused	This is a SURFnet nameserver - dns-beheer@surfnet.nl
ns1.zurich.surf.net 195.176.255.9	NOERROR, 9 ms, authoritative	no	yes / yes	refused	This is a SURFnet nameserver - dns-beheer@surf.nl
ns1.zurich.surf.net 2001:620:0:9::1103	NOERROR, 9 ms, authoritative	no	yes / yes	refused	This is a SURFnet nameserver - dns-beheer@surf.nl

✓ All respond #14

All 5 nameserver addresses answered.
✓ All authoritative #15

Every responding nameserver answers authoritatively for the zone.
✓ No recursion #16

The nameservers do not answer recursive queries for other domains.
!

Software version disclosed

These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns0.socialhistoryservices.org: "9.18.39-0ubuntu0.22.04.7-Ubuntu". Hide or replace the version string.

#17
✓ Zone transfers refused #18

No nameserver allows a zone transfer to the public.
✓ TCP supported #19

All nameservers answer over TCP.
✓ EDNS supported #20

All nameservers support EDNS(0).
✓ Public addresses #21

All nameserver addresses are publicly routable.

pass

serial 2026091500 · primary ns0.socialhistoryservices.org

Nameserver	Serial
ns0.socialhistoryservices.org (195.169.88.250)	2026091500
ns1.surfnet.nl (192.87.106.101)	2026091500
ns1.surfnet.nl (2001:610:1:800a:192:87:106:101)	2026091500
ns1.zurich.surf.net (195.176.255.9)	2026091500
ns1.zurich.surf.net (2001:620:0:9::1103)	2026091500

✓ Serial 2026091500 everywhere #22

All nameservers serve the same version of the zone.
✓ Timers within recommendations #23

SOA refresh 8h, retry 2h, expire 7d, negative TTL 1d.
✓ Primary is a public nameserver #24

The primary nameserver ns0.socialhistoryservices.org is one of the listed nameservers.
✓ Contact postmaster@socialhistoryservices.org #25

The SOA RNAME postmaster.socialhistoryservices.org means postmaster@socialhistoryservices.org.
✓ Date-based serial #26

The serial 2026091500 follows the YYYYMMDDnn convention (2026-09-15).

warn

Not signed

info

11 records at the apex

Type	Value	TTL
SOA	ns0.socialhistoryservices.org. postmaster.socialhistoryservices.org. 2026091500 28800 7200 604800 86400	86400
NS	ns1.surfnet.nl.	3600
NS	ns1.zurich.surf.net.	3600
NS	ns0.socialhistoryservices.org.	3600
A	195.169.88.174	3600
MX	10 iisg-nl.mail.protection.outlook.com.	300
TXT	"google-site-verification=iQ5-JO98wAZNoAx2Wj9AVYSF1N31ebByJsFIK9FInD0"	3600
TXT	"MS=ms38826909"	3600
TXT	"v=spf1 include:spf.protection.outlook.com include:_spf.knaw.nl ip4:195.169.88.200 include:_spf-dc55.sapsf.eu include:servers.mcsv.net include:spf.eprov.eu include:procurios.cloud -all"	3600
TXT	"HARICA-LtFKz8Ri4bkdIa8yIbz"	3600
TXT	"adobe-idp-site-verification=e574ceb69375114ec72f4bc11ec46141ec4c1c194117b84d37a333c9a1375d04"	3600