`surfnet.nl`

DNSSEC	⚠️ Not signed
A	2001:610:188:410:145:100:190:243^{🇳🇱 SURFNET-NL2001:610::/29 SURFnet IPv6 block}
A	2001:610:508:108:192:87:108:15^{🇳🇱 SURFNET-NL2001:610::/29 SURFnet IPv6 block}
A	145.100.190.243^{🇳🇱 SURFNET-NL145.100.0.0/15 145.100.0.0/15 aggregate SURFNET-UNO}
A	192.87.108.15^{🇳🇱 SURFNET-NL192.87.0.0/16 SURFnet CIDR Block IV}
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	`ns0.ja.net` ⚠️ Not in parent delegation
		A	2001:630:0:8::14^{🇬🇧 JANET2001:630::/32 JANET(UK) Network Operations Centre Third floor 15 Fetter Lane London EC4A 1BW United Kingdom}
		A	2001:630:0:9::14^{🇬🇧 JANET2001:630::/32 JANET(UK) Network Operations Centre Third floor 15 Fetter Lane London EC4A 1BW United Kingdom}
		A	128.86.1.20^{🇬🇧 JANET128.86.0.0/16 Aggregated Route JANET(UK) Network Operations Centre Third floor 15 Fetter Lane London EC4A 1BW United Kingdom}
			PTR	`ns0.ja.net`
		A	193.63.94.20^{🇬🇧 JANET193.60.0.0/14 JANET(UK) Network Operations Centre Third floor 15 Fetter Lane London EC4A 1BW United Kingdom}
			PTR	`ns0.ja.net`
NS	`ns1.zurich.surf.net` ⚠️ Not in parent delegation
		A	2001:620:0:9::1103^{🇨🇭 Switch2001:620::/32 SWITCH, The Swiss Education & Research Network}
			PTR	`ns1.zurich.surf.net`
		A	195.176.255.9^{🇨🇭 Switch195.176.224.0/19 SWITCH-AGGR.102}
			PTR	`ns1.zurich.surf.net`
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}
MX	`surfnet-nl.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::2^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-du2pr03cu00102.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::f^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am7pr05cu00307.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::20^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as8pr05cu00400.inbound.protection.outlook.com`
		A	52.101.68.10^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-dbbpr03cu00102.inbound.protection.outlook.com`
		A	52.101.73.8^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am0pr04cu00500.inbound.protection.outlook.com`
		A	52.101.73.15^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am9pr04cu00107.inbound.protection.outlook.com`
		A	52.101.73.19^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as8pr04cu00803.inbound.protection.outlook.com`
TXT	`HARICA-lAIPumlIBfavcyQK7e1`
TXT	`adobe-idp-site-verification=bb247cf6e0162a264df1886109d59464c0de78dd3f1e04091...`
TXT	`ZOOM_verify_Bwct3YXYSYu6foAJyz9Xfg`
TXT	`kGKTLBSGkl3tot+T6ZqrHeaJuIbCAQYKyZusdcFZTiXgBzxlV31qUtWQnRGnK14R5j+zadvC7VTJz...`
TXT	`v=spf1 include:spf.protection.outlook.com ip4:192.87.108.0/22 ip4:91.208.87....`
TXT	`SURF=edMG0a7sHRnoQKeT`
TXT	`hibp-verify=dweb_f7p2tfr30h11m17dp5lrypih`
SOA	`ns1.surfnet.nl`dns-beheer@surf.nl 2026-03-12 #3

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐ 🔒
	NS	`ns3.dns.nl` 🔒
	NS	`ns4.dns.nl` 🔒
	TXT	`nl zone update: 2026-03-15 06:00:02 +0000 (EPOCH 1773554402)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-03-15 #12

rank #72361 globally
rank #517 in the tld
WOT: SAFE (76/100)
📈 Tranco rank: #11,853

Subdomains

dhcp-225.surfnet.nl

chime3.surfnet.nl

wiki01t.surfnet.nl

stream-cache5.surfnet.nl

dhcp-185.surfnet.nl

dhcp-239.surfnet.nl

dart.surfnet.nl

upsweb.surfnet.nl

fiveminutes.surfnet.nl

stream-cache7.surfnet.nl

dhcp-244.surfnet.nl

chime6.surfnet.nl

volt5.surfnet.nl

volt9.surfnet.nl

tiny.surfnet.nl

incoming.surfnet.nl

testunnel.surfnet.nl

dhcp-77.surfnet.nl

dhcp-95.surfnet.nl

dhcp-245.surfnet.nl

dhcp-87.surfnet.nl

dhcp-75.surfnet.nl

dhcp-80.surfnet.nl

ships.surfnet.nl

rogge.surfnet.nl

mediamosa.surfnet.nl

dhcp-220.surfnet.nl

contentswitch1.surfnet.nl

dhcp-207.surfnet.nl

ipv6.surfnet.nl

ip-phone-ejb.surfnet.nl

glb-lon.surfnet.nl

flex.surfnet.nl

pptp.surfnet.nl

stream-cache9.surfnet.nl

vh3.surfnet.nl

chime2.surfnet.nl

minsky.surfnet.nl

testca.surfnet.nl

extern.surfnet.nl

surplus.surfnet.nl

dhcp-232.surfnet.nl

tart.surfnet.nl

blackmagic.surfnet.nl

glb-til.surfnet.nl

dhcp-94.surfnet.nl

rd.surfnet.nl

dhcp-64.surfnet.nl

dexter.surfnet.nl

dhcp-186.surfnet.nl

robin.surfnet.nl

dhcp-63.surfnet.nl

ip-phone-ev.surfnet.nl

docent.surfnet.nl

dhcp-73.surfnet.nl

yoghurt.surfnet.nl

dhcp-78.surfnet.nl

tickets.surfnet.nl

stream-cache4.surfnet.nl

klokslag.surfnet.nl

vh4.surfnet.nl

dhcp-176.surfnet.nl

dashboard-test.surfnet.nl

dhcp-88.surfnet.nl

dhcp-71.surfnet.nl

sluipweg.surfnet.nl

od.surfnet.nl

dhcp-204.surfnet.nl

amp.surfnet.nl

dhcp-83.surfnet.nl

dhcp-60.surfnet.nl

revproxy20.surfnet.nl

henny.surfnet.nl

tiramisu.surfnet.nl

kijker.surfnet.nl

wasmachine.surfnet.nl

zimbra.surfnet.nl

creativelab.surfnet.nl

storage.surfnet.nl

any-resolver.surfnet.nl

chime1.surfnet.nl

severijn.surfnet.nl

gforge.surfnet.nl

beta.surfnet.nl

redactie.surfnet.nl

volt3.surfnet.nl

skin.surfnet.nl

kerckhoffs.surfnet.nl

dory.surfnet.nl

dhcp-92.surfnet.nl

hennes.surfnet.nl

dork.surfnet.nl

testap.surfnet.nl

honey.surfnet.nl

mauritz.surfnet.nl

workflow.surfnet.nl

fidas.surfnet.nl

dhcp-241.surfnet.nl

fi503-hfj.surfnet.nl

sw4-0.surfnet.nl

Same first word

surfnet.ne.jp

surfnet.at

surfnet.eu

surfnet.com.au

surfnet.com

surfnet.sk

surfnet.co.uk

surfnet.nu

surfnet.mobi

surfnet.co.ke

surfnet.us

surfnet.frl

surfnet.no

surfnet.cn

surfnet.net

surfnet.fi

surfnet.fr

surfnet.tv

surfnet.icu

surfnet.nl

surfnet.org

surfnet.com.br

surfnet.ru

surfnet.ca

surfnet.co

surfnet.cz

Similar names

runfest.ro

funster.ca

netsurf.hu

tensurf.com

netsurf.ad.jp

netsurf.ne.jp

netsurf.eu

restfun.com

netsurf.us

sunfert.cn

netsurf.ru

rusneft.ru

surfent.com

runfest.com

netsurf.co.hu

fursten.com

netsurf.com

ufrents.com

funster.info

sunfert.com

netsurf.com.hk

netsurf.org

sunfert.ch

funster.fi

funster.nl

netsurf.de

tresfun.de

netsurf.tw

netsurf.uk

furnest.net

netsurf.net

funster.xyz

netsurf.bg

truenfs.com

netsurf.ch

runfest.cz

nufster.com

rusneft.org

netsurf.it

netsurf.pt

netsurf.co.nz

netsurf.no

netsurf.at

furnest.com

surften.com

netsurf.ws

funrest.net

funster.com

rusneft.com

netsurf.co.in

funster.mobi

sunfert.net

netsurf.cz

netsurf.monster

runfest.fi

festrun.com

fursten.com.ar

fursten.eu

usfrent.com

DNS History

16 records (10 active, 6 former)

●NSns0.ja.net2009-07-02 → 2026-03-18 · 2 obs

● 2009-07-02 14:26:34
● 2026-03-18 21:53:24

●NSns1.surfnet.nl2009-07-02 → 2026-03-18 · 2 obs

● 2009-07-02 14:26:34
● 2026-03-18 21:53:24

●NSns1.zurich.surf.net2015-08-09 → 2026-03-18 · 3 obs

○ 2009-07-02 14:26:34
● 2015-08-09 11:52:42
● 2026-03-18 21:53:24

●NSns2.surfnet.nl2009-07-02 → 2026-03-18 · 2 obs

● 2009-07-02 14:26:34
● 2026-03-18 21:53:24

●NSns3.surfnet.nl2009-07-02 → 2026-03-18 · 2 obs

● 2009-07-02 14:26:34
● 2026-03-18 21:53:24

○MXmx-1.mf.surf.net2009-07-02 → 2017-04-22 · 4 obs

● 2009-07-02 14:26:34
● 2017-04-22 02:58:12
○ 2017-06-03 03:47:02
○ 2026-03-18 21:53:24

○MXmx-a.mf.surf.net2009-07-02 → 2017-04-22 · 4 obs

● 2009-07-02 14:26:34
● 2017-04-22 02:58:12
○ 2017-06-03 03:47:02
○ 2026-03-18 21:53:24

○MXmx1.surfmailfilter.nl2017-06-03 → 2020-12-31 · 5 obs

○ 2017-04-22 02:58:12
● 2017-06-03 03:47:02
● 2020-12-31 22:38:54
○ 2026-02-14 17:12:32
○ 2026-03-18 21:53:24

○MXmx10.surfmailfilter.nl2026-02-14 → 2026-03-05 · 5 obs

○ 2020-12-31 22:38:54
● 2026-02-14 17:12:32
● 2026-03-05 06:34:48
○ 2026-03-05 10:29:52
○ 2026-03-18 21:53:24

○MXmx11.surfmailfilter.nl2026-02-14 → 2026-03-05 · 5 obs

○ 2020-12-31 22:38:54
● 2026-02-14 17:12:32
● 2026-03-05 06:34:48
○ 2026-03-05 10:29:52
○ 2026-03-18 21:53:24

○MXmx2.surfmailfilter.nl2017-06-03 → 2020-12-31 · 5 obs

○ 2017-04-22 02:58:12
● 2017-06-03 03:47:02
● 2020-12-31 22:38:54
○ 2026-02-14 17:12:32
○ 2026-03-18 21:53:24

●MXsurfnet-nl.mail.protection.outlook.com2026-03-05 → 2026-03-18 · 3 obs

○ 2026-03-05 06:34:48
● 2026-03-05 10:29:52
● 2026-03-18 21:53:24

●A145.100.190.2432015-08-09 → 2026-03-18 · 3 obs

○ 2009-07-02 14:26:34
● 2015-08-09 11:52:42
● 2026-03-18 21:53:24

●A192.87.108.152016-08-16 → 2026-03-18 · 3 obs

○ 2015-08-09 11:52:42
● 2016-08-16 12:21:32
● 2026-03-18 21:53:24

●A2001:610:188:410:145:100:190:2432015-08-09 → 2026-03-18 · 3 obs

○ 2009-07-02 14:26:34
● 2015-08-09 11:52:42
● 2026-03-18 21:53:24

●A2001:610:508:108:192:87:108:152016-08-16 → 2026-03-18 · 3 obs

○ 2015-08-09 11:52:42
● 2016-08-16 12:21:32
● 2026-03-18 21:53:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nl	ns1.dns.nl, ns3.dns.nl, ns4.dns.nl	-
surfnet.nl	ns0.ja.net, ns1.zurich.surf.net, ns1.surfnet.nl, ns2.surfnet.nl...	6 records

✅ Authoritative Response

Server: 192.87.106.101

NS records: ns0.ja.net, ns1.zurich.surf.net, ns1.surfnet.nl, ns2.surfnet.nl, ns3.surfnet.nl

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 687ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`145.100.190.243, 192.87.108.15`
AAAA	2	`2001:610:188:410:145:100:190:243, 2001:610:508:108:192:87:108:15`
NS	5	`ns1.surfnet.nl, ns2.surfnet.nl...`
MX	1	`surfnet-nl.mail.protection.outlook.com (`
TXT	7	`hibp-verify=dweb_f7p2tfr30h11m17dp5lrypi, v=spf1 include:spf.protection.outlook.co...`
SOA	1	`ns1.surfnet.nl dns-beheer.surf.nl`

📌 Glue Records Collected

Total: 6

In-bailiwick: 6 (ns1.surfnet.nl, ns1.surfnet.nl, ns2.surfnet.nl...)

Analysis

Hierarchy

surfnet.nl is a parent of dhcp-225.surfnet.nl, chime3.surfnet.nl, wiki01t.surfnet.nl, stream-cache5.surfnet.nl, dhcp-185.surfnet.nl and hundreds of other host names.

IP Addresses

surfnet.nl maps to four IP numbers: 2001:610:188:410:145:100:190:243, 2001:610:508:108:192:87:108:15, 145.100.190.243 and 192.87.108.15.

Other host names, for instance mijncertificaat.surfnet.nl, netherlight.nl, cert-nl.surfnet.nl, surfwireless.nl and surffilesender.nl share IP numbers with surfnet.nl.

Name Servers

surfnet.nl is delegated to five name servers: ns0.ja.net, ns1.surfnet.nl, ns2.surfnet.nl, ns3.surfnet.nl and ns1.zurich.surf.net.

surfnet.nl partially shares name servers with other domains; examples include biokennis.nl, databanksport.nl, ddcu.nl, surfsender.nl and 233.97.145.in-addr.arpa.

These name servers are often used with ns4.ja.net, ns2.ja.net, ns-ext-01.wur.nl, ns3.ja.net, ns1.ja.net, arachne.leidenuniv.nl, ns6.eur.nl and umcdns03.azn.nl.

Host names with four IP numbers:

The host name ns0.ja.net points to: 2001:630:0:8::14, 2001:630:0:9::14, 128.86.1.20 and 193.63.94.20.

Host names with two IP numbers:

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; ns1.zurich.surf.net points to 2001:620:0:9::1103 and 195.176.255.9.

Mail Servers

surfnet.nl is handled by a single mail server, surfnet-nl.mail.protection.outlook.com.

Hostname surfnet-nl.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::2, 2a01:111:f403:ca09::b, 2a01:111:f403:ca09::f, 2a01:111:f403:ca09::20, 52.101.68.10, 52.101.73.8, 52.101.73.15 and 52.101.73.19.

surfnet.nl - robtex.com

surfnet.nl

nl

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`surfnet.nl`

`nl`