mail.opa.nl - robtex.com

mail.opa.nl

CNAMEopa.nl
DNSSEC⚠️ Not signed
A37.46.140.25🇳🇱 CYSO-AS37.46.136.0/21
NSns1.sqr.nl ⭐
A2a01:518:ffff:4020::53:3🇳🇱 CYSO-AS2a01:518::/32
A109.235.73.236🇳🇱 CYSO-AS109.235.72.0/21
NSns2.sqr.domains
A2a01:518:ffff:4020::53:4🇳🇱 CYSO-AS2a01:518::/32
A93.94.227.166🇳🇱 CYSO-AS93.94.224.0/21 Cyso Hosting B.V. Block
NSns3.sqr.cloud
A2a03:6000:1002:1002::54🇳🇱 AS601312a03:6000::/29
A46.23.87.195🇳🇱 AS6013146.23.80.0/20
MXopa-nl.mail.protection.outlook.com ⭐
A2a01:111:f403:ca04::5🇮🇪 Microsoft2a01:111:f000::/36
A2a01:111:f403:ca04::6🇮🇪 Microsoft2a01:111:f000::/36
A2a01:111:f403:ca04::d🇮🇪 Microsoft2a01:111:f000::/36
A2a01:111:f403:ca04::f🇮🇪 Microsoft2a01:111:f000::/36
A52.101.68.5🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
A52.101.68.16🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
A52.101.68.29🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
A52.101.73.2🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
TXTMS=ms18997092
TXTgoogle-site-verification=oVah5O-weXbqB4xwTiKyBSkG_9lF4AMLvwcuMiGFl7w
TXTv=spf1 include:spf.protection.outlook.com -all
TXTgoogle-site-verification=cKG8NGVsix3Mp5pFhKMgEdX0qepDbGg4TISBX_tD8jM
SOAns1.sqr.nlhostmaster@opa.nl 2026-04-07 #1

opa.nl

DNSSEC⚠️ Not signed
A37.46.140.25🇳🇱 CYSO-AS37.46.136.0/21
NSns1.sqr.nl ⭐
NSns2.sqr.domains
NSns3.sqr.cloud
MXopa-nl.mail.protection.outlook.com ⭐
TXTMS=ms18997092
TXTgoogle-site-verification=oVah5O-weXbqB4xwTiKyBSkG_9lF4AMLvwcuMiGFl7w
TXTv=spf1 include:spf.protection.outlook.com -all
TXTgoogle-site-verification=cKG8NGVsix3Mp5pFhKMgEdX0qepDbGg4TISBX_tD8jM
SOAns1.sqr.nlhostmaster@opa.nl 2026-04-07 #1
WOT: SAFE (62/100)
WOT: SAFE (68/100)

Previously MX for

opa.nl

Same first word

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DNS History

9 records (1 active, 8 former)

201020122014201620182020202220242026A217.119.11.37217.119.11.61217.119.11.632a02:29b0::11:372a02:29b0::11:612a02:29b0::11:6383.96.229.65CNAMEopa.nlmail.box.nl
○A217.119.11.372015-07-18 → 2016-09-10 · 5 obs
○ 2009-01-18 15:53:28
● 2015-07-18 20:18:40
● 2016-09-10 13:07:38
○ 2026-04-23 22:41:36
○ 2026-04-23 22:41:40
○A217.119.11.612015-07-18 → 2016-09-10 · 5 obs
○ 2009-01-18 15:53:28
● 2015-07-18 20:18:40
● 2016-09-10 13:07:38
○ 2026-04-23 22:41:36
○ 2026-04-23 22:41:40
○A217.119.11.632015-07-18 → 2016-09-10 · 5 obs
○ 2009-01-18 15:53:28
● 2015-07-18 20:18:40
● 2016-09-10 13:07:38
○ 2026-04-23 22:41:36
○ 2026-04-23 22:41:40
○A2a02:29b0::11:372015-07-18 → 2016-09-10 · 5 obs
○ 2009-01-18 15:53:28
● 2015-07-18 20:18:40
● 2016-09-10 13:07:38
○ 2026-04-23 22:41:36
○ 2026-04-23 22:41:40
○A2a02:29b0::11:612015-07-18 → 2016-09-10 · 5 obs
○ 2009-01-18 15:53:28
● 2015-07-18 20:18:40
● 2016-09-10 13:07:38
○ 2026-04-23 22:41:36
○ 2026-04-23 22:41:40
○A2a02:29b0::11:632015-07-18 → 2016-09-10 · 5 obs
○ 2009-01-18 15:53:28
● 2015-07-18 20:18:40
● 2016-09-10 13:07:38
○ 2026-04-23 22:41:36
○ 2026-04-23 22:41:40
○A83.96.229.652009-01-18 → 2009-01-18 · 3 obs
● 2009-01-18 15:53:28
○ 2015-07-18 20:18:40
○ 2026-04-23 22:41:40
○CNAMEmail.box.nl2015-07-18 → 2016-09-10 · 5 obs
○ 2009-01-18 15:53:28
● 2015-07-18 20:18:40
● 2016-09-10 13:07:38
○ 2026-04-23 22:41:36
○ 2026-04-23 22:41:40
●CNAMEopa.nl2026-04-23 → 2026-04-23 · 3 obs
○ 2016-09-10 13:07:38
● 2026-04-23 22:41:36
● 2026-04-23 22:41:40

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
nlns3.dns.nl, ns1.dns.nl, ns4.dns.nl-
opa.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

⚠️ Insecure (no DNSSEC)

No DS record for opa.nl (unsigned zone)

⏱️ Timing

Total: 936ms | Queries: -

📄 Records

TypeCountSample Data
CNAME1opa.nl

Analysis

IP Addresses

mail.opa.nl points to a single IP: 37.46.140.25.

Name Servers

mail.opa.nl is delegated to three name servers: ns3.sqr.cloud, ns2.sqr.domains and ns1.sqr.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

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

Hostname opa-nl.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::5, 2a01:111:f403:ca04::6, 2a01:111:f403:ca04::d, 2a01:111:f403:ca04::f, 52.101.68.5, 52.101.68.16, 52.101.68.29 and 52.101.73.2.