sem.nl - robtex.com

sem.nl

DNSSEC⚠️ Not signed
A3.5.64.253🇮🇪 Amazon3.5.64.0/24 EC2 Prefix
PTRs3-r-w.eu-west-1.amazonaws.com
A3.5.66.23🇮🇪 Amazon3.5.66.0/24 EC2 Prefix
A3.5.73.86🇮🇪 Amazon3.5.73.0/24 AWS S3
A3.5.74.93🇺🇸 Amazon3.5.74.0/24 AWS S3
A3.5.75.127🇺🇸 Amazon3.5.75.0/24 AWS S3
A52.92.1.76🇮🇪 Amazon52.92.1.0/24 S3 ICN prefix
A52.92.32.20🇮🇪 Amazon52.92.32.0/21
A52.92.33.84🇮🇪 Amazon52.92.32.0/21
NSns-1066.awsdns-05.org ⭐
A2600:9000:5304:2a00::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront
PTRns-1066.awsdns-05.org
A205.251.196.42🇺🇸 Amazon205.251.196.0/24 prefix
PTRns-1066.awsdns-05.org
NSns-1831.awsdns-36.co.uk
A2600:9000:5307:2700::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront
PTRns-1831.awsdns-36.co.uk
A205.251.199.39🇺🇸 Amazon205.251.199.0/24 prefix
PTRns-1831.awsdns-36.co.uk
NSns-69.awsdns-08.com ⚠️ Not in parent delegation
A2600:9000:5300:4500::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront
PTRns-69.awsdns-08.com
A205.251.192.69🇺🇸 Amazon205.251.192.0/24 prefix
PTRns-69.awsdns-08.com
NSns-741.awsdns-28.net
A2600:9000:5302:e500::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront
PTRns-741.awsdns-28.net
A205.251.194.229🇺🇸 Amazon205.251.194.0/24 prefix
PTRns-741.awsdns-28.net
MXsem-nl.mail.protection.outlook.com ⭐
A2a01:111:f403:ca04::b🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-dbbpr03cu00103.inbound.protection.outlook.com
A2a01:111:f403:ca04::d🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-db6pr03cu00105.inbound.protection.outlook.com
A2a01:111:f403:ca04::e🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-db8pr02cu00106.inbound.protection.outlook.com
A2a01:111:f403:ca09::3🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-am6pr04cu00303.inbound.protection.outlook.com
A52.101.68.0🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db3pr0202cu00100.inbound.protection.outlook.com
A52.101.68.18🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db4pr02cu00302.inbound.protection.outlook.com
A52.101.68.21🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db4pr02cu00205.inbound.protection.outlook.com
A52.101.73.16🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-as2pr05cu00100.inbound.protection.outlook.com
TXTMS=ms21801181
TXTv=spf1 include:spf.protection.outlook.com -all
SOAns-1066.awsdns-05.orgawsdns-hostmaster@amazon.com serial=1

nl

DNSSEC🔒 Signed (DS record present)
NSns1.dns.nl ⭐ 🔒
NSns3.dns.nl 🔒
NSns4.dns.nl 🔒
TXTnl zone update: 2026-02-17 01:00:01 +0000 (EPOCH 1771290001)
SOAns1.dns.nldns@sidn.nl 2026-02-17 #2

Up

www.sem.nl

Same first word

sem.immo
sem.mx
sem.co
sem.gz.cn
sem.al
sem.edu.pl
sem.expert
sem.sc.cn
sem.gob.pa
sem.ie
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sem.com.cn
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sem.com
sem.fr
sem.chat
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sem.com.my
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Similar names

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esm.ca
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ems.ltd
sme.gov.om
sme.im
mes.zone
mse.com.mk
esm.org.uk
mse.ag

DNS History

87 records (13 active, 74 former)

20162017201820192020202120222023202420252026NSns-1066.awsdns-05.orgns-1831.awsdns-36.co.ukns-69.awsdns-08.comns-741.awsdns-28.netns.interconnect.nlns2.interconnect.nlns3.interconnect.nlns4.interconnect.euns5.interconnect.nlMXsem-nl.mail.protection.outlook.comA3.5.64.2533.5.66.233.5.73.863.5.74.933.5.75.12752.92.1.7652.92.32.2052.92.33.84195.211.72.933.5.64.2003.5.64.2103.5.64.2293.5.64.2303.5.64.2463.5.64.2523.5.66.213.5.66.303.5.66.313.5.66.363.5.66.373.5.66.543.5.66.63.5.67.2113.5.67.2213.5.67.2313.5.69.163.5.69.553.5.69.583.5.71.1073.5.71.1233.5.71.693.5.71.713.5.71.733.5.71.813.5.71.833.5.72.743.5.73.783.5.74.1033.5.74.503.5.74.523.5.74.533.5.74.823.5.75.113.5.75.1223.5.75.253.5.75.563.5.75.783.5.75.93.5.75.923.5.75.9952.218.0.2052.218.116.14052.218.26.8452.218.29.18052.218.30.20452.218.44.1252.218.62.4452.92.0.15652.92.0.20452.92.1.2052.92.1.6052.92.16.13252.92.17.10852.92.19.16452.92.2.17252.92.2.22052.92.2.6852.92.20.11652.92.3.25252.92.32.17252.92.32.18852.92.32.5252.92.34.16452.92.36.20452.92.4.15652.92.4.6052.92.4.84
●NSns-1066.awsdns-05.org2026-02-15 → 2026-02-25 · 3 obs
○ 2016-08-31 08:33:22
● 2026-02-15 16:17:50
● 2026-02-25 09:09:54
●NSns-1831.awsdns-36.co.uk2026-02-15 → 2026-02-25 · 3 obs
○ 2016-08-31 08:33:22
● 2026-02-15 16:17:50
● 2026-02-25 09:09:54
●NSns-69.awsdns-08.com2026-02-15 → 2026-02-25 · 3 obs
○ 2016-08-31 08:33:22
● 2026-02-15 16:17:50
● 2026-02-25 09:09:54
●NSns-741.awsdns-28.net2026-02-15 → 2026-02-25 · 3 obs
○ 2016-08-31 08:33:22
● 2026-02-15 16:17:50
● 2026-02-25 09:09:54
○NSns.interconnect.nl2015-09-01 → 2016-08-31 · 4 obs
● 2015-09-01 19:19:40
● 2016-08-31 08:33:22
○ 2026-02-15 16:17:50
○ 2026-02-25 09:09:54
○NSns2.interconnect.nl2015-09-01 → 2016-08-31 · 4 obs
● 2015-09-01 19:19:40
● 2016-08-31 08:33:22
○ 2026-02-15 16:17:50
○ 2026-02-25 09:09:54
○NSns3.interconnect.nl2015-09-01 → 2016-08-31 · 4 obs
● 2015-09-01 19:19:40
● 2016-08-31 08:33:22
○ 2026-02-15 16:17:50
○ 2026-02-25 09:09:54
○NSns4.interconnect.eu2015-09-01 → 2016-08-31 · 4 obs
● 2015-09-01 19:19:40
● 2016-08-31 08:33:22
○ 2026-02-15 16:17:50
○ 2026-02-25 09:09:54
○NSns5.interconnect.nl2015-09-01 → 2016-08-31 · 4 obs
● 2015-09-01 19:19:40
● 2016-08-31 08:33:22
○ 2026-02-15 16:17:50
○ 2026-02-25 09:09:54
●MXsem-nl.mail.protection.outlook.com2015-09-01 → 2026-02-25 · 2 obs
● 2015-09-01 19:19:40
● 2026-02-25 09:09:54
○A195.211.72.932015-09-01 → 2016-08-31 · 4 obs
● 2015-09-01 19:19:40
● 2016-08-31 08:33:22
○ 2026-02-15 16:17:50
○ 2026-02-25 09:09:54
○A3.5.64.2002026-02-16 → 2026-02-16 · 4 obs
○ 2026-02-16 05:47:24
● 2026-02-16 14:57:46
○ 2026-02-18 02:20:22
○ 2026-02-25 09:09:54
○A3.5.64.2102026-02-15 → 2026-02-25 · 2 obs
○ 2026-02-15 16:17:50
○ 2026-02-25 09:09:54
○A3.5.64.2292026-02-15 → 2026-02-25 · 2 obs
○ 2026-02-15 16:17:50
○ 2026-02-25 09:09:54
○A3.5.64.2302026-02-16 → 2026-02-16 · 4 obs
○ 2026-02-15 19:03:58
● 2026-02-16 05:47:24
○ 2026-02-16 14:57:46
○ 2026-02-25 09:09:54
○A3.5.64.2462026-02-20 → 2026-02-20 · 4 obs
○ 2026-02-18 02:20:22
● 2026-02-20 18:15:30
○ 2026-02-20 23:39:34
○ 2026-02-25 09:09:54
○A3.5.64.2522026-02-15 → 2026-02-15 · 4 obs
○ 2016-08-31 08:33:22
● 2026-02-15 16:17:50
○ 2026-02-15 19:03:58
○ 2026-02-25 09:09:54
●A3.5.64.2532026-02-25 → 2026-02-25 · 3 obs
○ 2026-02-25 01:07:36
● 2026-02-25 09:09:50
● 2026-02-25 09:09:54
○A3.5.66.212026-02-16 → 2026-02-25 · 8 obs
○ 2026-02-16 05:47:24
● 2026-02-16 14:57:46
○ 2026-02-18 02:20:22
○ 2026-02-20 23:39:34
● 2026-02-21 03:32:04
● 2026-02-25 01:07:36
○ 2026-02-25 09:09:50
○ 2026-02-25 09:09:54
●A3.5.66.232026-02-25 → 2026-02-25 · 3 obs
○ 2026-02-25 01:07:36
● 2026-02-25 09:09:50
● 2026-02-25 09:09:54
○A3.5.66.302026-02-20 → 2026-02-20 · 4 obs
○ 2026-02-18 02:20:22
● 2026-02-20 18:15:30
○ 2026-02-20 23:39:34
○ 2026-02-25 09:09:54
○A3.5.66.312026-02-18 → 2026-02-18 · 4 obs
○ 2026-02-16 14:57:46
● 2026-02-18 02:20:22
○ 2026-02-20 18:15:30
○ 2026-02-25 09:09:54
○A3.5.66.362026-02-15 → 2026-02-25 · 2 obs
○ 2026-02-15 16:17:50
○ 2026-02-25 09:09:54
○A3.5.66.372026-02-15 → 2026-02-21 · 7 obs
○ 2016-08-31 08:33:22
● 2026-02-15 16:17:50
○ 2026-02-15 19:03:58
○ 2026-02-20 23:39:34
● 2026-02-21 03:32:04
○ 2026-02-25 01:07:36
○ 2026-02-25 09:09:54
○A3.5.66.542026-02-15 → 2026-02-15 · 4 obs
○ 2016-08-31 08:33:22
● 2026-02-15 16:17:50
○ 2026-02-15 19:03:58
○ 2026-02-25 09:09:54
○A3.5.66.62026-02-20 → 2026-02-20 · 4 obs
○ 2026-02-20 18:15:30
● 2026-02-20 23:39:34
○ 2026-02-21 03:32:04
○ 2026-02-25 09:09:54
○A3.5.67.2112026-02-18 → 2026-02-18 · 4 obs
○ 2026-02-16 14:57:46
● 2026-02-18 02:20:22
○ 2026-02-20 18:15:30
○ 2026-02-25 09:09:54
○A3.5.67.2212026-02-20 → 2026-02-20 · 4 obs
○ 2026-02-18 02:20:22
● 2026-02-20 18:15:30
○ 2026-02-20 23:39:34
○ 2026-02-25 09:09:54
○A3.5.67.2312026-02-16 → 2026-02-16 · 4 obs
○ 2026-02-16 05:47:24
● 2026-02-16 14:57:46
○ 2026-02-18 02:20:22
○ 2026-02-25 09:09:54
○A3.5.69.162026-02-18 → 2026-02-18 · 4 obs
○ 2026-02-16 14:57:46
● 2026-02-18 02:20:22
○ 2026-02-20 18:15:30
○ 2026-02-25 09:09:54
○A3.5.69.552026-02-20 → 2026-02-20 · 4 obs
○ 2026-02-18 02:20:22
● 2026-02-20 18:15:30
○ 2026-02-20 23:39:34
○ 2026-02-25 09:09:54
○A3.5.69.582026-02-15 → 2026-02-20 · 7 obs
○ 2026-02-15 16:17:50
● 2026-02-15 19:03:58
○ 2026-02-16 05:47:24
○ 2026-02-20 18:15:30
● 2026-02-20 23:39:34
○ 2026-02-21 03:32:04
○ 2026-02-25 09:09:54
○A3.5.71.1072026-02-18 → 2026-02-18 · 4 obs
○ 2026-02-16 14:57:46
● 2026-02-18 02:20:22
○ 2026-02-20 18:15:30
○ 2026-02-25 09:09:54
○A3.5.71.1232026-02-16 → 2026-02-16 · 4 obs
○ 2026-02-15 19:03:58
● 2026-02-16 05:47:24
○ 2026-02-16 14:57:46
○ 2026-02-25 09:09:54
○A3.5.71.692026-02-20 → 2026-02-20 · 4 obs
○ 2026-02-20 18:15:30
● 2026-02-20 23:39:34
○ 2026-02-21 03:32:04
○ 2026-02-25 09:09:54
○A3.5.71.712026-02-20 → 2026-02-20 · 4 obs
○ 2026-02-20 18:15:30
● 2026-02-20 23:39:34
○ 2026-02-21 03:32:04
○ 2026-02-25 09:09:54
○A3.5.71.732026-02-16 → 2026-02-20 · 7 obs
○ 2026-02-15 19:03:58
● 2026-02-16 05:47:24
○ 2026-02-16 14:57:46
○ 2026-02-20 18:15:30
● 2026-02-20 23:39:34
○ 2026-02-21 03:32:04
○ 2026-02-25 09:09:54
○A3.5.71.812026-02-15 → 2026-02-15 · 4 obs
○ 2016-08-31 08:33:22
● 2026-02-15 16:17:50
○ 2026-02-15 19:03:58
○ 2026-02-25 09:09:54
○A3.5.71.832026-02-25 → 2026-02-25 · 4 obs
○ 2026-02-21 03:32:04
● 2026-02-25 01:07:36
○ 2026-02-25 09:09:50
○ 2026-02-25 09:09:54
○A3.5.72.742026-02-15 → 2026-02-15 · 4 obs
○ 2016-08-31 08:33:22
● 2026-02-15 16:17:50
○ 2026-02-15 19:03:58
○ 2026-02-25 09:09:54
○A3.5.73.782026-02-16 → 2026-02-20 · 7 obs
○ 2026-02-15 19:03:58
● 2026-02-16 05:47:24
○ 2026-02-16 14:57:46
○ 2026-02-18 02:20:22
● 2026-02-20 18:15:30
○ 2026-02-20 23:39:34
○ 2026-02-25 09:09:54
●A3.5.73.862026-02-21 → 2026-02-25 · 5 obs
○ 2026-02-20 23:39:34
● 2026-02-21 03:32:04
○ 2026-02-25 01:07:36
● 2026-02-25 09:09:50
● 2026-02-25 09:09:54
○A3.5.74.1032026-02-20 → 2026-02-20 · 4 obs
○ 2026-02-18 02:20:22
● 2026-02-20 18:15:30
○ 2026-02-20 23:39:34
○ 2026-02-25 09:09:54
○A3.5.74.502026-02-20 → 2026-02-25 · 6 obs
○ 2026-02-20 18:15:30
● 2026-02-20 23:39:34
○ 2026-02-21 03:32:04
● 2026-02-25 01:07:36
○ 2026-02-25 09:09:50
○ 2026-02-25 09:09:54
○A3.5.74.522026-02-15 → 2026-02-15 · 4 obs
○ 2026-02-15 16:17:50
● 2026-02-15 19:03:58
○ 2026-02-16 05:47:24
○ 2026-02-25 09:09:54
○A3.5.74.532026-02-21 → 2026-02-21 · 4 obs
○ 2026-02-20 23:39:34
● 2026-02-21 03:32:04
○ 2026-02-25 01:07:36
○ 2026-02-25 09:09:54
○A3.5.74.822026-02-21 → 2026-02-21 · 4 obs
○ 2026-02-20 23:39:34
● 2026-02-21 03:32:04
○ 2026-02-25 01:07:36
○ 2026-02-25 09:09:54
●A3.5.74.932026-02-25 → 2026-02-25 · 3 obs
○ 2026-02-25 01:07:36
● 2026-02-25 09:09:50
● 2026-02-25 09:09:54
○A3.5.75.112026-02-25 → 2026-02-25 · 4 obs
○ 2026-02-21 03:32:04
● 2026-02-25 01:07:36
○ 2026-02-25 09:09:50
○ 2026-02-25 09:09:54
○A3.5.75.1222026-02-16 → 2026-02-25 · 8 obs
○ 2026-02-15 19:03:58
● 2026-02-16 05:47:24
○ 2026-02-16 14:57:46
○ 2026-02-20 23:39:34
● 2026-02-21 03:32:04
● 2026-02-25 01:07:36
○ 2026-02-25 09:09:50
○ 2026-02-25 09:09:54
●A3.5.75.1272026-02-15 → 2026-02-25 · 6 obs
○ 2016-08-31 08:33:22
● 2026-02-15 16:17:50
○ 2026-02-15 19:03:58
○ 2026-02-25 01:07:36
● 2026-02-25 09:09:50
● 2026-02-25 09:09:54
○A3.5.75.252026-02-15 → 2026-02-15 · 4 obs
○ 2026-02-15 16:17:50
● 2026-02-15 19:03:58
○ 2026-02-16 05:47:24
○ 2026-02-25 09:09:54
○A3.5.75.562026-02-20 → 2026-02-20 · 4 obs
○ 2026-02-20 18:15:30
● 2026-02-20 23:39:34
○ 2026-02-21 03:32:04
○ 2026-02-25 09:09:54
○A3.5.75.782026-02-15 → 2026-02-15 · 4 obs
○ 2026-02-15 16:17:50
● 2026-02-15 19:03:58
○ 2026-02-16 05:47:24
○ 2026-02-25 09:09:54
○A3.5.75.92026-02-15 → 2026-02-25 · 2 obs
○ 2026-02-15 16:17:50
○ 2026-02-25 09:09:54
○A3.5.75.922026-02-15 → 2026-02-15 · 4 obs
○ 2026-02-15 16:17:50
● 2026-02-15 19:03:58
○ 2026-02-16 05:47:24
○ 2026-02-25 09:09:54
○A3.5.75.992026-02-21 → 2026-02-21 · 4 obs
○ 2026-02-20 23:39:34
● 2026-02-21 03:32:04
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🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
nlns1.dns.nl, ns3.dns.nl, ns4.dns.nl-
sem.nlns-741.awsdns-28.net, ns-1066.awsdns-05.org, ns-1831.awsdns-36.co.uk-

✅ Authoritative Response

Server: 205.251.199.39

NS records: ns-741.awsdns-28.net, ns-1066.awsdns-05.org, ns-1831.awsdns-36.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sem.nl (unsigned zone)

⏱️ Timing

Total: 618ms | Queries: -

📄 Records

TypeCountSample Data
A83.5.66.15, 3.5.74.90...
NS4ns-1066.awsdns-05.org, ns-1831.awsdns-36.co.uk...
MX1sem-nl.mail.protection.outlook.com (pri:
TXT2MS=ms21801181, v=spf1 include:spf.protection.outlook.co
SOA1ns-1066.awsdns-05.org awsdns-hostmaster.

AI analysis

The parent of www.sem.nl is sem.nl.

Eight IP numbers are pointed to by sem.nl: 3.5.64.253, 3.5.66.23, 3.5.73.86, 3.5.74.93, 3.5.75.127, 52.92.1.76, 52.92.32.20 and 52.92.33.84.

other host names include www.almatalentevents.com, sensepost.uk, www.alfiolago.it, espered.com and pleo.lt; they share IP numbers with sem.nl.

sem.nl delegates to four name servers: ns-69.awsdns-08.com, ns-741.awsdns-28.net, ns-1066.awsdns-05.org and ns-1831.awsdns-36.co.uk.

sem.nl at least partially shares name servers with other domains, for instance mira720.com, bystanderevolution.org, astro-woche.de, dianasflowers.com and thethirstybanker.com.

Host names with two IP numbers: ns-69.awsdns-08.com points to 2600:9000:5300:4500::1 and 205.251.192.69; ns-741.awsdns-28.net points to 2600:9000:5302:e500::1 and 205.251.194.229; ns-1066.awsdns-05.org points to 2600:9000:5304:2a00::1 and 205.251.196.42; ns-1831.awsdns-36.co.uk points to 2600:9000:5307:2700::1 and 205.251.199.39.

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

Hostname sem-nl.mail.protection.outlook.com resolves to eight IP numbers: 2a01:111:f403:ca04::b, 2a01:111:f403:ca04::d, 2a01:111:f403:ca04::e, 2a01:111:f403:ca09::3, 52.101.68.0, 52.101.68.18, 52.101.68.21 and 52.101.73.16.