systemdynamics.org - dns.ninja

`systemdynamics.org`

DNSSEC	⚠️ Not signed
A	162.159.129.73^{Cloudflare162.159.128.0/19 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
A	162.159.130.73^{Cloudflare162.159.128.0/19 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns-1355.awsdns-41.org` ⭐
		A	2600:9000:5305:4b00::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1355.awsdns-41.org`
		A	205.251.197.75^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1355.awsdns-41.org`
NS	`ns-1853.awsdns-39.co.uk`
		A	2600:9000:5307:3d00::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1853.awsdns-39.co.uk`
		A	205.251.199.61^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1853.awsdns-39.co.uk`
NS	`ns-275.awsdns-34.com`
		A	2600:9000:5301:1300::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-275.awsdns-34.com`
		A	205.251.193.19^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-275.awsdns-34.com`
NS	`ns-776.awsdns-33.net`
		A	2600:9000:5303:800::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-776.awsdns-33.net`
		A	205.251.195.8^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-776.awsdns-33.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4023:c06::1a^{🇺🇸 Google2607:f8b0::/32}
			PTR	`dz-in-f26.1e100.net`
		A	142.250.141.26^{🇺🇸 Google142.250.141.0/24}
			PTR	`dd-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4023:2803::1a^{🇺🇸 Google2607:f8b0::/32}
			PTR	`lcausr-in-f26.1e100.net`
		A	172.217.216.26^{🇺🇸 Google172.217.0.0/16}
			PTR	`lcausr-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4023:3003::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yulnkjt-in-f27.1e100.net`
		A	172.253.145.27^{🇺🇸 Google172.253.145.0/24}
			PTR	`yulnkjt-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`_globalsign-domain-verification=I5KyKlgDe3s6xc71fZl0VS06kP_9YWZKSWSpVAguoa`
TXT	`google-site-verification=Ddc2B_rTnMw46s-L-wwtCzf3zyncC_9w7AZVCv3Og70`
TXT	`v=spf1 mx a ip4:50.28.41.122 ip4:3.210.192.112 include:emailsrvr.com include:...`
SOA	`ns-1355.awsdns-41.org`awsdns-hostmaster@amazon.com serial=1

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1784045853

rank #172986 globally
rank #14577 in the tld
WOT: UNKNOWN (61/100)
📈 Tranco rank: #450,143

Previously MX for

systemdynamics.org

www.systemdynamics.org

Subdomains

conference.systemdynamics.org

www.systemdynamics.org

Same first word

Similar names

DNS History

34 records (11 active, 23 former)

○NSdina.ns.cloudflare.com2018-07-14 → 2018-07-14 · 4 obs

○ 2016-09-19 22:46:00
● 2018-07-14 12:25:52
○ 2026-02-28 13:31:06
○ 2026-07-14 16:40:28

○NSjason.ns.cloudflare.com2018-07-14 → 2018-07-14 · 4 obs

○ 2016-09-19 22:46:00
● 2018-07-14 12:25:52
○ 2026-02-28 13:31:06
○ 2026-07-14 16:40:28

●NSns-1355.awsdns-41.org2026-02-28 → 2026-07-14 · 3 obs

○ 2018-07-14 12:25:52
● 2026-02-28 13:31:06
● 2026-07-14 16:40:28

●NSns-1853.awsdns-39.co.uk2026-02-28 → 2026-07-14 · 3 obs

○ 2018-07-14 12:25:52
● 2026-02-28 13:31:06
● 2026-07-14 16:40:28

●NSns-275.awsdns-34.com2026-02-28 → 2026-07-14 · 3 obs

○ 2018-07-14 12:25:52
● 2026-02-28 13:31:06
● 2026-07-14 16:40:28

●NSns-776.awsdns-33.net2026-02-28 → 2026-07-14 · 3 obs

○ 2018-07-14 12:25:52
● 2026-02-28 13:31:06
● 2026-07-14 16:40:28

○NSns.inmotionhosting.com2016-09-19 → 2016-09-19 · 4 obs

○ 2016-08-07 07:19:18
● 2016-09-19 22:46:00
○ 2018-07-14 12:25:52
○ 2026-07-14 16:40:28

○NSns1.systemdynamics.org2015-08-23 → 2016-08-07 · 4 obs

● 2015-08-23 12:55:52
● 2016-08-07 07:19:18
○ 2016-09-19 22:46:00
○ 2026-07-14 16:40:28

○NSns2.inmotionhosting.com2016-09-19 → 2016-09-19 · 4 obs

○ 2016-08-07 07:19:18
● 2016-09-19 22:46:00
○ 2018-07-14 12:25:52
○ 2026-07-14 16:40:28

○NSns2.systemdynamics.org2015-08-23 → 2016-08-07 · 4 obs

● 2015-08-23 12:55:52
● 2016-08-07 07:19:18
○ 2016-09-19 22:46:00
○ 2026-07-14 16:40:28

●MXalt1.aspmx.l.google.com2026-02-28 → 2026-07-14 · 3 obs

○ 2018-07-14 12:25:52
● 2026-02-28 13:31:06
● 2026-07-14 16:40:28

●MXalt2.aspmx.l.google.com2026-02-28 → 2026-07-14 · 3 obs

○ 2018-07-14 12:25:52
● 2026-02-28 13:31:06
● 2026-07-14 16:40:28

●MXalt3.aspmx.l.google.com2026-02-28 → 2026-07-14 · 3 obs

○ 2018-07-14 12:25:52
● 2026-02-28 13:31:06
● 2026-07-14 16:40:28

●MXalt4.aspmx.l.google.com2026-02-28 → 2026-07-14 · 3 obs

○ 2018-07-14 12:25:52
● 2026-02-28 13:31:06
● 2026-07-14 16:40:28

●MXaspmx.l.google.com2026-02-28 → 2026-07-14 · 3 obs

○ 2018-07-14 12:25:52
● 2026-02-28 13:31:06
● 2026-07-14 16:40:28

○MXmx1.emailsrvr.com2018-07-14 → 2018-07-14 · 4 obs

○ 2016-09-19 22:46:00
● 2018-07-14 12:25:52
○ 2026-02-28 13:31:06
○ 2026-07-14 16:40:28

○MXmx2.emailsrvr.com2018-07-14 → 2018-07-14 · 4 obs

○ 2016-09-19 22:46:00
● 2018-07-14 12:25:52
○ 2026-02-28 13:31:06
○ 2026-07-14 16:40:28

○MXsystemdynamics.org2015-08-23 → 2016-09-19 · 4 obs

● 2015-08-23 12:55:52
● 2016-09-19 22:46:00
○ 2018-07-14 12:25:52
○ 2026-07-14 16:40:28

○A104.17.237.1552018-07-14 → 2018-07-14 · 4 obs

○ 2016-09-19 22:46:00
● 2018-07-14 12:25:52
○ 2026-02-28 13:31:06
○ 2026-07-14 16:40:28

○A104.17.238.1552018-07-14 → 2018-07-14 · 4 obs

○ 2016-09-19 22:46:00
● 2018-07-14 12:25:52
○ 2026-02-28 13:31:06
○ 2026-07-14 16:40:28

○A104.17.239.1552018-07-14 → 2018-07-14 · 4 obs

○ 2016-09-19 22:46:00
● 2018-07-14 12:25:52
○ 2026-02-28 13:31:06
○ 2026-07-14 16:40:28

○A104.17.240.1552018-07-14 → 2018-07-14 · 4 obs

○ 2016-09-19 22:46:00
● 2018-07-14 12:25:52
○ 2026-02-28 13:31:06
○ 2026-07-14 16:40:28

○A104.17.241.1552018-07-14 → 2018-07-14 · 4 obs

○ 2016-09-19 22:46:00
● 2018-07-14 12:25:52
○ 2026-02-28 13:31:06
○ 2026-07-14 16:40:28

○A143.95.91.2452015-08-23 → 2016-08-07 · 4 obs

● 2015-08-23 12:55:52
● 2016-08-07 07:19:18
○ 2016-09-19 22:46:00
○ 2026-07-14 16:40:28

○A144.208.72.1882016-09-19 → 2016-09-19 · 4 obs

○ 2016-08-07 07:19:18
● 2016-09-19 22:46:00
○ 2018-07-14 12:25:52
○ 2026-07-14 16:40:28

●A162.159.129.732026-06-29 → 2026-07-14 · 3 obs

○ 2026-05-17 17:57:38
● 2026-06-29 16:15:12
● 2026-07-14 16:40:28

●A162.159.130.732026-06-29 → 2026-07-14 · 3 obs

○ 2026-05-17 17:57:38
● 2026-06-29 16:15:12
● 2026-07-14 16:40:28

○A162.159.136.542026-02-28 → 2026-05-17 · 5 obs

○ 2018-07-14 12:25:52
● 2026-02-28 13:31:06
● 2026-05-17 17:57:38
○ 2026-06-29 16:15:12
○ 2026-07-14 16:40:28

○A162.159.137.542026-02-28 → 2026-05-17 · 5 obs

○ 2018-07-14 12:25:52
● 2026-02-28 13:31:06
● 2026-05-17 17:57:38
○ 2026-06-29 16:15:12
○ 2026-07-14 16:40:28

○A2400:cb00:2048:1::6811:ed9b2018-07-14 → 2018-07-14 · 4 obs

○ 2016-09-19 22:46:00
● 2018-07-14 12:25:52
○ 2026-02-28 13:31:06
○ 2026-07-14 16:40:28

○A2400:cb00:2048:1::6811:ee9b2018-07-14 → 2018-07-14 · 4 obs

○ 2016-09-19 22:46:00
● 2018-07-14 12:25:52
○ 2026-02-28 13:31:06
○ 2026-07-14 16:40:28

○A2400:cb00:2048:1::6811:ef9b2018-07-14 → 2018-07-14 · 4 obs

○ 2016-09-19 22:46:00
● 2018-07-14 12:25:52
○ 2026-02-28 13:31:06
○ 2026-07-14 16:40:28

○A2400:cb00:2048:1::6811:f09b2018-07-14 → 2018-07-14 · 4 obs

○ 2016-09-19 22:46:00
● 2018-07-14 12:25:52
○ 2026-02-28 13:31:06
○ 2026-07-14 16:40:28

○A2400:cb00:2048:1::6811:f19b2018-07-14 → 2018-07-14 · 4 obs

○ 2016-09-19 22:46:00
● 2018-07-14 12:25:52
○ 2026-02-28 13:31:06
○ 2026-07-14 16:40:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	d0.org.afilias-nst.org, b0.org.afilias-nst.org, b2.org.afilias-nst.org	-
systemdynamics.org	ns-1853.awsdns-39.co.uk, ns-275.awsdns-34.com, ns-776.awsdns-33.net, ns-1355.awsdns-41.org	2 records

✅ Authoritative Response

Server:205.251.197.75

NS records: ns-1853.awsdns-39.co.uk, ns-275.awsdns-34.com, ns-776.awsdns-33.net, ns-1355.awsdns-41.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for systemdynamics.org (unsigned zone)

⏱️ Timing

Total: 667ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`162.159.129.73, 162.159.130.73`
NS	4	`ns-1355.awsdns-41.org, ns-1853.awsdns-39.co.uk...`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	3	`_globalsign-domain-verification=I5KyKlgD, google-site-verification=Ddc2B_rTnMw46s-...`
SOA	1	`ns-1355.awsdns-41.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-1355.awsdns-41.org, ns-1355.awsdns-41.org)

Analysis

Hierarchy

The parent domain of conference.systemdynamics.org and www.systemdynamics.org is systemdynamics.org.

IP Addresses

systemdynamics.org has two IP addresses: 162.159.129.73 and 162.159.130.73

Among the host names that share IP numbers with systemdynamics.org are shopasaali.com, marquee-arts.org, santaecommerce.com and two others.

Name Servers

The domain systemdynamics.org is delegated to these four name servers: ns-275.awsdns-34.com, ns-776.awsdns-33.net, ns-1355.awsdns-41.org and ns-1853.awsdns-39.co.uk.

There is at least partial name server overlap between systemdynamics.org and other domains — mblstg.com, mywanderlust.in, d1ehdcvtuc4u15.cloudfront.net and two more among them.

The name servers ns-239.awsdns-29.com, ns-779.awsdns-33.net and ns-1388.awsdns-45.org are often found in combination with these name servers.

All four hostnames — ns-275.awsdns-34.com, ns-776.awsdns-33.net, ns-1355.awsdns-41.org and ns-1853.awsdns-39.co.uk — resolve to two IP numbers apiece: ns-275.awsdns-34.com to 205.251.193.19 and 2600:9000:5301:1300::1; ns-776.awsdns-33.net to 205.251.195.8 and 2600:9000:5303:800::1; ns-1355.awsdns-41.org to 205.251.197.75 and 2600:9000:5305:4b00::1; ns-1853.awsdns-39.co.uk to 205.251.199.61 and 2600:9000:5307:3d00::1.

Mail Servers

Five mail servers handle systemdynamics.org: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

systemdynamics.org shares at least some of its mail servers with other domains — for example valleyadvocate.com, ns500768.ns500758.ns500759.ns500698.ns500735.ns500736.ns500698.ns500735.ns500576.ns500698.ns500708.ns500619.ns500619.ns500652.ns500576.trackreceptor.com, ns500742.ns500731.ns500742.ns500731.ns500754.ns500731.ns500688.ns500705.ns500671.ns500688.ns500688.ns500671.ns500649.ns500649.lustychickser.com and two more.

It is common for these mail servers to co-occur with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com as mail servers.

Hosts with two IP numbers each:

aspmx.l.google.com resolves to 142.250.141.26 and 2607:f8b0:4023:c06::1a.

alt1.aspmx.l.google.com resolves to 172.217.216.26 and 2607:f8b0:4023:2803::1a.

alt2.aspmx.l.google.com resolves to 172.253.145.27 and 2607:f8b0:4023:3003::1b.

alt3.aspmx.l.google.com resolves to 192.178.223.27 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com resolves to 172.253.157.27 and 2a00:1450:400c:c23::1b.