start-college.nl - robtex.com

start-college.nl

DNSSEC🔒 Signed (DS record present)
A2606:4700:7::7d🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A2a06:98c1:58::7d🇺🇸 Cloudflare2a06:98c1:58::/48
A162.159.140.127Cloudflare162.159.128.0/19 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A172.66.0.125🇺🇸 Cloudflare172.66.0.0/22 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSns1.sqr.nl ⭐
A2a01:518:ffff:4020::53:3🇳🇱 CYSO-AS2a01:518::/32 Cyso Hosting B.V. IPv6 Block
PTRns1.dns.sqr.cyso.net
A109.235.73.236🇳🇱 CYSO-AS109.235.72.0/21 Cyso Hosting B.V. Block
PTRns1.dns.sqr.cyso.net
NSns2.sqr.domains
A2a01:518:ffff:4020::53:4🇳🇱 CYSO-AS2a01:518::/32 Cyso Hosting B.V. IPv6 Block
PTRns2.dns.sqr.cyso.net
A93.94.227.166🇳🇱 CYSO-AS93.94.224.0/21 Cyso Hosting B.V. Block
PTRns2.dns.sqr.cyso.net
NSns3.sqr.cloud
A2a03:6000:1002:1002::54🇳🇱 HIGH5-NL2a03:6000::/29 High5! B.V.
PTRns3.sqr.cloud
A46.23.87.195🇳🇱 HIGH5-NL46.23.80.0/20 High5! B.V.
PTRns3.sqr.cloud
MXstartcollege-nl01c.mail.protection.outlook.com ⭐
A2a01:111:f403:ca04::9🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-db7pr03cu00601.inbound.protection.outlook.com
A2a01:111:f403:ca04::f🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-db7pr03cu00507.inbound.protection.outlook.com
A2a01:111:f403:ca09::2🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-am0pr83cu00402.inbound.protection.outlook.com
A2a01:111:f403:ca09::c🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-as8pr05cu00304.inbound.protection.outlook.com
A52.101.68.0🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db3pr0202cu00100.inbound.protection.outlook.com
A52.101.68.12🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db9pr02cu00204.inbound.protection.outlook.com
A52.101.68.21🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db4pr02cu00205.inbound.protection.outlook.com
A52.101.73.11🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-am1pr04cu00103.inbound.protection.outlook.com
MXstartcollege-nl01c.r-v1.mx.microsoft(50)
A2a01:111:f403:ca04::9🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-db7pr03cu00601.inbound.protection.outlook.com
A2a01:111:f403:ca04::a🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-du0pr03cu00102.inbound.protection.outlook.com
A2a01:111:f403:ca09::8🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-as2pr05cu00100.inbound.protection.outlook.com
A2a01:111:f403:ca09::b🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-am7pr05cu00103.inbound.protection.outlook.com
A52.101.68.8🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-du0pr03cu00100.inbound.protection.outlook.com
A52.101.73.4🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-am0pr83cu00404.inbound.protection.outlook.com
A52.101.73.19🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-as8pr04cu00803.inbound.protection.outlook.com
A52.101.73.24🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-as8pr05cu00300.inbound.protection.outlook.com
TXTsending_domain471061=0fd5106cea52d423307d020d22a65d4a0dd133777386068cb6645de9...
TXTMS=ms57592150
TXTpardot471061=7ad3156cf1c840dc055c30b49796f4ab3843e5212efae772a5e701a3da5e4a6f
TXTgdsc/Gger+lPq9SjY9ZjeApe5LNeAPHVIaB1DvX1bMc=
TXTSm3Z7e2q0bL3/gShoemef5UzjSbmTDuZOhCLOymckQRMpNaXMHrXhfiS9J55O9sQvazOXD0IlL5Zv...
TXTv=spf1 include:landstedegroep.net include:aspmx.pardot.com -all
SOAns1.sqr.nlhostmaster@start-college.nl 2026-04-13 #0

nl

DNSSEC🔒 Signed (DS record present)
NSns1.dns.nl ⭐
NSns3.dns.nl
NSns4.dns.nl
TXTnl zone update: 2026-05-14 06:30:01 +0000 (EPOCH 1778740201)
SOAns1.dns.nldns@sidn.nl 2026-05-14 #13

Same first word

start-college.nl

DNS History

14 records (9 active, 5 former)

20192020202120222023202420252026NSns1.sqr.nlns2.sqr.domainsns3.sqr.cloudns1.landstede.nlns2.landstede.nlMXstartcollege-nl01c.mail.protection.outlook.comstartcollege-nl01c.r-v1.mx.microsoftmx-1.mf.surf.netmx-a.mf.surf.netA162.159.140.127172.66.0.1252606:4700:7::7d2a06:98c1:58::7d195.169.119.134
○NSns1.landstede.nl2018-06-28 → 2018-06-28 · 3 obs
● 2018-06-28 22:39:02
○ 2026-04-24 05:48:20
○ 2026-05-14 06:50:42
●NSns1.sqr.nl2026-04-24 → 2026-05-14 · 3 obs
○ 2018-06-28 22:39:02
● 2026-04-24 05:48:20
● 2026-05-14 06:50:42
○NSns2.landstede.nl2018-06-28 → 2018-06-28 · 3 obs
● 2018-06-28 22:39:02
○ 2026-04-24 05:48:20
○ 2026-05-14 06:50:42
●NSns2.sqr.domains2026-04-24 → 2026-05-14 · 3 obs
○ 2018-06-28 22:39:02
● 2026-04-24 05:48:20
● 2026-05-14 06:50:42
●NSns3.sqr.cloud2026-04-24 → 2026-05-14 · 3 obs
○ 2018-06-28 22:39:02
● 2026-04-24 05:48:20
● 2026-05-14 06:50:42
○MXmx-1.mf.surf.net2018-06-28 → 2018-06-28 · 3 obs
● 2018-06-28 22:39:02
○ 2026-04-24 05:48:20
○ 2026-05-14 06:50:42
○MXmx-a.mf.surf.net2018-06-28 → 2018-06-28 · 3 obs
● 2018-06-28 22:39:02
○ 2026-04-24 05:48:20
○ 2026-05-14 06:50:42
●MXstartcollege-nl01c.mail.protection.outlook.com2026-04-24 → 2026-05-14 · 3 obs
○ 2018-06-28 22:39:02
● 2026-04-24 05:48:20
● 2026-05-14 06:50:42
●MXstartcollege-nl01c.r-v1.mx.microsoft2026-04-24 → 2026-05-14 · 3 obs
○ 2018-06-28 22:39:02
● 2026-04-24 05:48:20
● 2026-05-14 06:50:42
●A162.159.140.1272026-04-24 → 2026-05-14 · 3 obs
○ 2018-06-28 22:39:02
● 2026-04-24 05:48:20
● 2026-05-14 06:50:42
●A172.66.0.1252026-04-24 → 2026-05-14 · 3 obs
○ 2018-06-28 22:39:02
● 2026-04-24 05:48:20
● 2026-05-14 06:50:42
○A195.169.119.1342018-06-28 → 2018-06-28 · 3 obs
● 2018-06-28 22:39:02
○ 2026-04-24 05:48:20
○ 2026-05-14 06:50:42
●A2606:4700:7::7d2026-04-24 → 2026-05-14 · 3 obs
○ 2018-06-28 22:39:02
● 2026-04-24 05:48:20
● 2026-05-14 06:50:42
●A2a06:98c1:58::7d2026-04-24 → 2026-05-14 · 3 obs
○ 2018-06-28 22:39:02
● 2026-04-24 05:48:20
● 2026-05-14 06:50:42

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
nlns1.dns.nl, ns3.dns.nl, ns4.dns.nl-
start-college.nlns1.sqr.nl, ns2.sqr.domains, ns3.sqr.cloud-

✅ Authoritative Response

Server:46.23.87.195

NS records: ns1.sqr.nl, ns2.sqr.domains, ns3.sqr.cloud

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1441ms | Queries: -

📄 Records

TypeCountSample Data
A2162.159.140.127, 172.66.0.125
AAAA22a06:98c1:58::7d, 2606:4700:7::7d
NS3ns1.sqr.nl, ns2.sqr.domains...
MX2startcollege-nl01c.r-v1.mx.microsoft (pr, startcollege-nl01c.mail.protection.outlo
TXT6pardot471061=7ad3156cf1c840dc055c30b4979, sending_domain471061=0fd5106cea52d423307...
SOA1ns1.sqr.nl hostmaster.start-college.nl

Analysis

IP Addresses

start-college.nl maps to four IP numbers: 2606:4700:7::7d, 2a06:98c1:58::7d, 162.159.140.127 and 172.66.0.125.

Other host names, for instance ns2.susquehanna.com, feralco.com, bulten.fr, mccain-foodservice.sk and alfons-haar.com.au share IP numbers with start-college.nl.

Name Servers

start-college.nl is delegated to three name servers: ns3.sqr.cloud, ns2.sqr.domains and ns1.sqr.nl.

start-college.nl partially shares name servers with other domains; examples include paardrijsport.be, lokomotieven.nl, eraritter.nl, landstede.tv and rieksveenker.nl.

Host names with two IP numbers:

ns3.sqr.cloud points to 2a03:6000:1002:1002::54 and 46.23.87.195.

ns2.sqr.domains points to 2a01:518:ffff:4020::53:4 and 93.94.227.166.

ns1.sqr.nl points to 2a01:518:ffff:4020::53:3 and 109.235.73.236.

Mail Servers

start-college.nl is handled by two mail servers: startcollege-nl01c.r-v1.mx.microsoft and startcollege-nl01c.mail.protection.outlook.com.

Eight IP numbers per host

startcollege-nl01c.r-v1.mx.microsoft points to 2a01:111:f403:ca04::9, 2a01:111:f403:ca04::a, 2a01:111:f403:ca09::8, 2a01:111:f403:ca09::b, 52.101.68.8, 52.101.73.4, 52.101.73.19 and 52.101.73.24

startcollege-nl01c.mail.protection.outlook.com points to 2a01:111:f403:ca04::9, 2a01:111:f403:ca04::f, 2a01:111:f403:ca09::2, 2a01:111:f403:ca09::c, 52.101.68.0, 52.101.68.12, 52.101.68.21 and 52.101.73.11

Hosts pointing to 2a01:111:f403:ca04::9: startcollege-nl01c.r-v1.mx.microsoft and startcollege-nl01c.mail.protection.outlook.com