`it-library.nl`

DNSSEC	⚠️ Not signed
A	87.233.12.90^{🇳🇱 TrueServer-AS87.233.0.0/18 True RedBus (AMS5) netblock}
NS	`ns1.markmonitor.com` ⭐
		A	2620:10a:80a8::1^{🇨🇦 CIRA-22620:10a:80a8::/48 markmonitor v6 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.160.1^{🇨🇦 CIRA-2149.112.160.0/24 markmonitor v4 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
NS	`ns2.markmonitor.com`
		A	2001:67c:10b8::1^{🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net}
			PTR	`ns2.markmonitor.com`
		A	176.97.158.1^{🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net}
			PTR	`ns2.markmonitor.com`
NS	`ns3.markmonitor.com`
		A	2620:10a:80a9::1^{🇨🇦 CIRA-32620:10a:80a9::/48 markmonitor v6 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.161.1^{🇨🇦 CIRA-3149.112.161.0/24 markmonitor v4 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
NS	`ns4.markmonitor.com`
		A	2001:67c:1bc::1^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD2001:67c:1bc::/48 IPCom-NET Anycast}
			PTR	`ns1.markmonitor.com`
		A	192.174.68.1^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD192.174.68.0/24 NICat-anycast-net}
			PTR	`ns1.markmonitor.com`
NS	`ns5.markmonitor.com`
		A	2620:10a:80a8::2^{🇨🇦 CIRA-22620:10a:80a8::/48 markmonitor v6 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.160.2^{🇨🇦 CIRA-2149.112.160.0/24 markmonitor v4 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
NS	`ns6.markmonitor.com`
		A	2001:67c:10b8::3^{🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net}
			PTR	`ns6.markmonitor.com`
		A	176.97.158.3^{🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net}
			PTR	`ns6.markmonitor.com`
NS	`ns7.markmonitor.com`
		A	2620:10a:80a9::2^{🇨🇦 CIRA-32620:10a:80a9::/48 markmonitor v6 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.161.2^{🇨🇦 CIRA-3149.112.161.0/24 markmonitor v4 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
SOA	`ns1.markmonitor.com`hostmaster@markmonitor.com 2021-03-31 #2

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐
	NS	`ns3.dns.nl`
	NS	`ns4.dns.nl`
	TXT	`nl zone update: 2026-05-11 12:00:02 +0000 (EPOCH 1778500802)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-05-11 #24

Same first word

it-library.nl

DNS History

16 records (8 active, 8 former)

●NSns1.markmonitor.com2026-04-11 → 2026-05-11 · 3 obs

○ 2019-03-17 16:15:16
● 2026-04-11 02:52:56
● 2026-05-11 12:55:02

○NSns1.openprovider.nl2017-01-09 → 2019-03-17 · 5 obs

○ 2016-05-01 08:42:04
● 2017-01-09 01:29:42
● 2019-03-17 16:15:16
○ 2026-04-11 02:52:56
○ 2026-05-11 12:55:02

○NSns1.widexs.nl2015-06-23 → 2016-05-01 · 4 obs

● 2015-06-23 19:03:36
● 2016-05-01 08:42:04
○ 2017-01-09 01:29:42
○ 2026-05-11 12:55:02

●NSns2.markmonitor.com2026-04-11 → 2026-05-11 · 3 obs

○ 2019-03-17 16:15:16
● 2026-04-11 02:52:56
● 2026-05-11 12:55:02

○NSns2.openprovider.be2017-01-09 → 2019-03-17 · 5 obs

○ 2016-05-01 08:42:04
● 2017-01-09 01:29:42
● 2019-03-17 16:15:16
○ 2026-04-11 02:52:56
○ 2026-05-11 12:55:02

○NSns2.widexs.net2015-06-23 → 2016-05-01 · 4 obs

● 2015-06-23 19:03:36
● 2016-05-01 08:42:04
○ 2017-01-09 01:29:42
○ 2026-05-11 12:55:02

●NSns3.markmonitor.com2026-04-11 → 2026-05-11 · 3 obs

○ 2019-03-17 16:15:16
● 2026-04-11 02:52:56
● 2026-05-11 12:55:02

○NSns3.openprovider.eu2017-01-09 → 2019-03-17 · 5 obs

○ 2016-05-01 08:42:04
● 2017-01-09 01:29:42
● 2019-03-17 16:15:16
○ 2026-04-11 02:52:56
○ 2026-05-11 12:55:02

○NSns3.widexs.nl2015-06-23 → 2016-05-01 · 4 obs

● 2015-06-23 19:03:36
● 2016-05-01 08:42:04
○ 2017-01-09 01:29:42
○ 2026-05-11 12:55:02

●NSns4.markmonitor.com2026-04-11 → 2026-05-11 · 3 obs

○ 2019-03-17 16:15:16
● 2026-04-11 02:52:56
● 2026-05-11 12:55:02

●NSns5.markmonitor.com2026-04-11 → 2026-05-11 · 3 obs

○ 2019-03-17 16:15:16
● 2026-04-11 02:52:56
● 2026-05-11 12:55:02

●NSns6.markmonitor.com2026-04-11 → 2026-05-11 · 3 obs

○ 2019-03-17 16:15:16
● 2026-04-11 02:52:56
● 2026-05-11 12:55:02

●NSns7.markmonitor.com2026-04-11 → 2026-05-11 · 3 obs

○ 2019-03-17 16:15:16
● 2026-04-11 02:52:56
● 2026-05-11 12:55:02

○MXmx1.it-library.nl2015-06-23 → 2016-05-01 · 4 obs

● 2015-06-23 19:03:36
● 2016-05-01 08:42:04
○ 2017-01-09 01:29:42
○ 2026-05-11 12:55:02

○A212.204.192.32015-06-23 → 2016-05-01 · 4 obs

● 2015-06-23 19:03:36
● 2016-05-01 08:42:04
○ 2017-01-09 01:29:42
○ 2026-05-11 12:55:02

●A87.233.12.902017-01-09 → 2026-05-11 · 3 obs

○ 2016-05-01 08:42:04
● 2017-01-09 01:29:42
● 2026-05-11 12:55:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nl	ns1.dns.nl, ns3.dns.nl, ns4.dns.nl	-
it-library.nl	ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com...	-

✅ Authoritative Response

Server:149.112.160.2

NS records: ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns5.markmonitor.com, ns6.markmonitor.com, ns7.markmonitor.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for it-library.nl (unsigned zone)

⏱️ Timing

Total: 1135ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`87.233.12.90`
NS	7	`ns1.markmonitor.com, ns2.markmonitor.com...`
SOA	1	`ns1.markmonitor.com hostmaster.markmonit`

Analysis

IP Addresses

it-library.nl points to a single IP number: 87.233.12.90.

Other host names, for instance itlibrary.nl, itworld.nl, idgtv.nl, computerworld.be and channelworld.nl share IP numbers with it-library.nl.

Name Servers

it-library.nl is delegated to seven name servers: ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns5.markmonitor.com, ns6.markmonitor.com and ns7.markmonitor.com.

it-library.nl at least partially shares name servers with other domains, for instance cctrvl.com, dotcode.mobi, awsdns-04.co, zoetis.ag and adoddelivery.com.