`orthotoolkit.com`

DNSSEC	⚠️ Not signed
A	18.161.21.75^{🇺🇸 Amazon18.161.16.0/21}
		PTR	`server-18-161-21-75.bos50.r.cloudfront.net`
A	18.161.21.79^{🇺🇸 Amazon18.161.16.0/21}
A	18.161.21.87^{🇺🇸 Amazon18.161.16.0/21}
A	18.161.21.117^{🇺🇸 Amazon18.161.16.0/21}
NS	`ns-1438.awsdns-51.org` ⭐
		A	2600:9000:5305:9e00::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1438.awsdns-51.org`
		A	205.251.197.158^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1438.awsdns-51.org`
NS	`ns-1921.awsdns-48.co.uk`
		A	2600:9000:5307:8100::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1921.awsdns-48.co.uk`
		A	205.251.199.129^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1921.awsdns-48.co.uk`
NS	`ns-221.awsdns-27.com`
		A	2600:9000:5300:dd00::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-221.awsdns-27.com`
		A	205.251.192.221^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-221.awsdns-27.com`
NS	`ns-847.awsdns-41.net`
		A	2600:9000:5303:4f00::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-847.awsdns-41.net`
		A	205.251.195.79^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-847.awsdns-41.net`
SOA	`ns-1438.awsdns-51.org`awsdns-hostmaster@amazon.com serial=1

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1776909027

Same first word

orthotoolkit.com

DNS History

56 records (8 active, 48 former)

●NSns-1438.awsdns-51.org2017-11-19 → 2026-04-23 · 2 obs

● 2017-11-19 03:42:30
● 2026-04-23 02:17:26

●NSns-1921.awsdns-48.co.uk2017-11-19 → 2026-04-23 · 2 obs

● 2017-11-19 03:42:30
● 2026-04-23 02:17:26

●NSns-221.awsdns-27.com2017-11-19 → 2026-04-23 · 2 obs

● 2017-11-19 03:42:30
● 2026-04-23 02:17:26

●NSns-847.awsdns-41.net2017-11-19 → 2026-04-23 · 2 obs

● 2017-11-19 03:42:30
● 2026-04-23 02:17:26

○A108.156.39.1182026-02-24 → 2026-04-23 · 146 obs

● 2026-02-24 06:03:56
○ 2026-02-25 05:23:26
● 2026-02-25 06:19:42
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● 2026-02-25 15:31:20
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● 2026-03-01 19:19:12
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● 2026-03-02 22:16:26
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● 2026-03-03 05:37:26
● 2026-03-03 06:31:46
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● 2026-03-24 23:09:46
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● 2026-04-14 01:40:36
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● 2026-04-14 06:47:58
○ 2026-04-14 17:18:54
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● 2026-04-15 18:59:28
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● 2026-04-17 00:38:32
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● 2026-04-22 02:47:32
● 2026-04-22 05:48:48
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● 2026-04-23 00:11:54
○ 2026-04-23 00:44:52
○ 2026-04-23 02:17:26

○A108.156.39.1282026-02-24 → 2026-04-23 · 146 obs

○A108.156.39.172026-02-24 → 2026-04-23 · 146 obs

○A108.156.39.252026-02-24 → 2026-04-23 · 146 obs

○A108.158.122.1132026-04-05 → 2026-04-10 · 7 obs

○ 2026-04-05 01:13:58
● 2026-04-05 01:59:34
○ 2026-04-05 03:06:48
○ 2026-04-10 13:00:10
● 2026-04-10 18:33:06
○ 2026-04-10 22:19:26
○ 2026-04-23 02:17:26

○A108.158.122.202026-04-05 → 2026-04-10 · 7 obs

○ 2026-04-05 01:13:58
● 2026-04-05 01:59:34
○ 2026-04-05 03:06:48
○ 2026-04-10 13:00:10
● 2026-04-10 18:33:06
○ 2026-04-10 22:19:26
○ 2026-04-23 02:17:26

○A108.158.122.262026-04-05 → 2026-04-10 · 7 obs

○ 2026-04-05 01:13:58
● 2026-04-05 01:59:34
○ 2026-04-05 03:06:48
○ 2026-04-10 13:00:10
● 2026-04-10 18:33:06
○ 2026-04-10 22:19:26
○ 2026-04-23 02:17:26

○A108.158.122.352026-04-05 → 2026-04-10 · 7 obs

○ 2026-04-05 01:13:58
● 2026-04-05 01:59:34
○ 2026-04-05 03:06:48
○ 2026-04-10 13:00:10
● 2026-04-10 18:33:06
○ 2026-04-10 22:19:26
○ 2026-04-23 02:17:26

○A13.33.129.1072026-04-22 → 2026-04-22 · 4 obs

○ 2026-04-22 05:48:48
● 2026-04-22 15:32:10
○ 2026-04-22 17:22:34
○ 2026-04-23 02:17:26

○A13.33.129.522026-04-22 → 2026-04-22 · 4 obs

○ 2026-04-22 05:48:48
● 2026-04-22 15:32:10
○ 2026-04-22 17:22:34
○ 2026-04-23 02:17:26

○A13.33.129.802026-04-22 → 2026-04-22 · 4 obs

○ 2026-04-22 05:48:48
● 2026-04-22 15:32:10
○ 2026-04-22 17:22:34
○ 2026-04-23 02:17:26

○A13.33.129.982026-04-22 → 2026-04-22 · 4 obs

○ 2026-04-22 05:48:48
● 2026-04-22 15:32:10
○ 2026-04-22 17:22:34
○ 2026-04-23 02:17:26

○A13.35.78.1222026-03-01 → 2026-04-20 · 20 obs

○ 2026-03-01 14:56:40
● 2026-03-01 16:49:32
○ 2026-03-01 19:19:12
● 2026-03-02 08:55:56
○ 2026-03-02 22:16:26
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○ 2026-03-19 01:49:42
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○ 2026-03-27 12:19:10
● 2026-03-27 14:02:34
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● 2026-04-20 00:29:12
○ 2026-04-20 05:13:08
○ 2026-04-23 02:17:26

○A13.35.78.1282026-03-01 → 2026-04-20 · 20 obs

○A13.35.78.282026-03-01 → 2026-04-20 · 20 obs

○A13.35.78.592026-03-01 → 2026-04-20 · 20 obs

○A18.155.21.102026-03-29 → 2026-04-21 · 55 obs

○ 2026-03-28 17:15:04
● 2026-03-29 03:05:32
● 2026-03-30 09:52:22
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● 2026-04-21 09:57:50
○ 2026-04-21 12:15:44
○ 2026-04-23 02:17:26

○A18.155.21.452026-03-29 → 2026-04-21 · 55 obs

○A18.155.21.802026-03-29 → 2026-04-21 · 55 obs

○A18.155.21.92026-03-29 → 2026-04-21 · 55 obs

●A18.161.21.1172026-04-22 → 2026-04-23 · 8 obs

○ 2026-04-21 12:15:44
● 2026-04-22 00:34:38
○ 2026-04-22 02:47:32
○ 2026-04-22 15:32:10
● 2026-04-22 17:22:34
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● 2026-04-23 02:17:26

●A18.161.21.752026-04-22 → 2026-04-23 · 8 obs

○ 2026-04-21 12:15:44
● 2026-04-22 00:34:38
○ 2026-04-22 02:47:32
○ 2026-04-22 15:32:10
● 2026-04-22 17:22:34
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● 2026-04-23 02:17:26

●A18.161.21.792026-04-22 → 2026-04-23 · 8 obs

○ 2026-04-21 12:15:44
● 2026-04-22 00:34:38
○ 2026-04-22 02:47:32
○ 2026-04-22 15:32:10
● 2026-04-22 17:22:34
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● 2026-04-23 02:17:26

●A18.161.21.872026-04-22 → 2026-04-23 · 8 obs

○ 2026-04-21 12:15:44
● 2026-04-22 00:34:38
○ 2026-04-22 02:47:32
○ 2026-04-22 15:32:10
● 2026-04-22 17:22:34
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● 2026-04-23 00:44:52
● 2026-04-23 02:17:26

○A18.165.98.1262026-02-25 → 2026-03-27 · 16 obs

○ 2026-02-25 06:19:42
● 2026-02-25 07:04:18
○ 2026-02-25 15:31:20
○ 2026-03-05 17:17:54
● 2026-03-07 00:29:40
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○ 2026-04-23 02:17:26

○A18.165.98.312026-02-25 → 2026-03-27 · 16 obs

○A18.165.98.752026-02-25 → 2026-03-27 · 16 obs

○A18.165.98.792026-02-25 → 2026-03-27 · 16 obs

○A18.172.213.1032026-03-22 → 2026-03-22 · 4 obs

○ 2026-03-22 01:56:50
● 2026-03-22 13:52:52
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○ 2026-04-23 02:17:26

○A18.172.213.32026-03-22 → 2026-03-22 · 4 obs

○ 2026-03-22 01:56:50
● 2026-03-22 13:52:52
○ 2026-03-23 03:11:28
○ 2026-04-23 02:17:26

○A18.172.213.72026-03-22 → 2026-03-22 · 4 obs

○ 2026-03-22 01:56:50
● 2026-03-22 13:52:52
○ 2026-03-23 03:11:28
○ 2026-04-23 02:17:26

○A18.172.213.842026-03-22 → 2026-03-22 · 4 obs

○ 2026-03-22 01:56:50
● 2026-03-22 13:52:52
○ 2026-03-23 03:11:28
○ 2026-04-23 02:17:26

○A18.244.28.482026-02-26 → 2026-02-26 · 4 obs

○ 2026-02-25 15:31:20
● 2026-02-26 10:31:18
○ 2026-03-01 14:56:40
○ 2026-04-23 02:17:26

○A18.244.28.492026-02-26 → 2026-02-26 · 4 obs

○ 2026-02-25 15:31:20
● 2026-02-26 10:31:18
○ 2026-03-01 14:56:40
○ 2026-04-23 02:17:26

○A18.244.28.592026-02-26 → 2026-02-26 · 4 obs

○ 2026-02-25 15:31:20
● 2026-02-26 10:31:18
○ 2026-03-01 14:56:40
○ 2026-04-23 02:17:26

○A18.244.28.832026-02-26 → 2026-02-26 · 4 obs

○ 2026-02-25 15:31:20
● 2026-02-26 10:31:18
○ 2026-03-01 14:56:40
○ 2026-04-23 02:17:26

○A18.245.162.1042026-04-01 → 2026-04-01 · 4 obs

○ 2026-03-31 11:49:40
● 2026-04-01 01:53:22
○ 2026-04-01 02:44:28
○ 2026-04-23 02:17:26

○A18.245.162.262026-04-01 → 2026-04-01 · 4 obs

○ 2026-03-31 11:49:40
● 2026-04-01 01:53:22
○ 2026-04-01 02:44:28
○ 2026-04-23 02:17:26

○A18.245.162.562026-04-01 → 2026-04-01 · 4 obs

○ 2026-03-31 11:49:40
● 2026-04-01 01:53:22
○ 2026-04-01 02:44:28
○ 2026-04-23 02:17:26

○A18.245.162.812026-04-01 → 2026-04-01 · 4 obs

○ 2026-03-31 11:49:40
● 2026-04-01 01:53:22
○ 2026-04-01 02:44:28
○ 2026-04-23 02:17:26

○A216.137.39.132026-02-25 → 2026-03-18 · 37 obs

○ 2026-02-24 06:03:56
● 2026-02-25 05:23:26
○ 2026-02-25 06:19:42
○ 2026-03-02 22:16:26
● 2026-03-03 04:57:46
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● 2026-03-09 22:39:32
○ 2026-03-09 23:52:54
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● 2026-03-12 11:40:52
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● 2026-03-17 04:49:06
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● 2026-03-18 08:53:26
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● 2026-03-18 22:51:14
○ 2026-03-19 01:49:42
○ 2026-04-23 02:17:26

○A216.137.39.282026-02-25 → 2026-03-18 · 37 obs

○A216.137.39.712026-02-25 → 2026-03-18 · 37 obs

○A216.137.39.942026-02-25 → 2026-03-18 · 37 obs

○A3.175.14.232026-04-08 → 2026-04-20 · 28 obs

○ 2026-04-08 04:53:12
● 2026-04-08 07:10:22
○ 2026-04-08 08:32:50
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● 2026-04-08 12:47:18
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● 2026-04-10 07:14:26
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● 2026-04-10 23:09:46
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○ 2026-04-11 02:28:34
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● 2026-04-13 22:37:28
○ 2026-04-13 23:25:22
○ 2026-04-14 23:13:44
● 2026-04-15 08:16:16
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○ 2026-04-20 00:29:12
● 2026-04-20 05:13:08
○ 2026-04-20 13:10:26
○ 2026-04-23 02:17:26

○A3.175.14.452026-04-08 → 2026-04-20 · 28 obs

○A3.175.14.492026-04-08 → 2026-04-20 · 28 obs

○A3.175.14.812026-04-08 → 2026-04-20 · 28 obs

○A99.84.132.252026-04-01 → 2026-04-07 · 19 obs

○ 2026-04-01 01:53:22
● 2026-04-01 02:44:28
○ 2026-04-01 09:53:32
○ 2026-04-04 01:02:48
● 2026-04-04 02:31:56
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● 2026-04-07 11:10:38
○ 2026-04-07 12:28:48
○ 2026-04-23 02:17:26

○A99.84.132.382026-04-01 → 2026-04-07 · 19 obs

○A99.84.132.412026-04-01 → 2026-04-07 · 19 obs

○A99.84.132.792026-04-01 → 2026-04-07 · 19 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, c.gtld-servers.net, f.gtld-servers.net, i.gtld-servers.net...	-
orthotoolkit.com	ns-221.awsdns-27.com, ns-847.awsdns-41.net, ns-1921.awsdns-48.co.uk, ns-1438.awsdns-51.org	2 records

✅ Authoritative Response

Server:205.251.197.158

NS records: ns-221.awsdns-27.com, ns-847.awsdns-41.net, ns-1921.awsdns-48.co.uk, ns-1438.awsdns-51.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for orthotoolkit.com (unsigned zone)

⏱️ Timing

Total: 496ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`18.161.21.117, 18.161.21.79...`
NS	4	`ns-1438.awsdns-51.org, ns-1921.awsdns-48.co.uk...`
SOA	1	`ns-1438.awsdns-51.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-221.awsdns-27.com, ns-221.awsdns-27.com)

Analysis

IP Addresses

orthotoolkit.com maps to four IP numbers: 18.161.21.75, 18.161.21.79, 18.161.21.87 and 18.161.21.117.

Other host names, for instance 232bacfefe4feed982aa23ad50184e2e.us.immersivelabs.com, daniel.mateos.cc, dicecafe.tv, us.us.immersivelabs.com and ienie1ohkaiphe6o.wvrscn.com share IP numbers with orthotoolkit.com.

Name Servers

orthotoolkit.com's delegation is handled by four name servers: ns-221.awsdns-27.com, ns-847.awsdns-41.net, ns-1438.awsdns-51.org and ns-1921.awsdns-48.co.uk.

orthotoolkit.com partially shares name servers with other domains; examples include drjalali.ir, b-hack.jp, loclx.io, d2mm89wd50jphu.cloudfront.net and aboutamazon.com.au.

Host names with two IPs:

ns-221.awsdns-27.com points to 2600:9000:5300:dd00::1 and 205.251.192.221

ns-847.awsdns-41.net points to 2600:9000:5303:4f00::1 and 205.251.195.79

ns-1438.awsdns-51.org points to 2600:9000:5305:9e00::1 and 205.251.197.158

ns-1921.awsdns-48.co.uk points to 2600:9000:5307:8100::1 and 205.251.199.129

orthotoolkit.com - robtex.com