`biosimulations.org`

DNSSEC	⚠️ Not signed
A	2600:1f18:16e:df01::258^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	2600:1f18:16e:df01::259^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	18.208.88.157^{🇺🇸 Amazon18.208.0.0/13 EC2 IAD prefix}
A	98.84.224.111^{🇺🇸 Amazon98.80.0.0/13 EC2 IAD Prefix}
NS	`dns1.p01.nsone.net` ⭐ ⚠️ Not in parent delegation
		A	2620:4d:4000:6259:7:1:0:1^{🇺🇸 NSONE2620:4d:4000::/48 2620:4D:4000::/48}
			PTR	`dns1.p01.nsone.net`
		A	198.51.44.1^{🇺🇸 NSONE198.51.44.0/24 198.51.44.0}
			PTR	`dns1.p01.nsone.net`
NS	`dns2.p01.nsone.net` ⚠️ Not in parent delegation
		A	2a00:edc0:6259:7:1::2^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns2.p01.nsone.net`
		A	198.51.45.1^{🇺🇸 NSONE198.51.45.0/24 198.51.45.0}
			PTR	`dns2.p01.nsone.net`
NS	`dns3.p01.nsone.net` ⚠️ Not in parent delegation
		A	2620:4d:4000:6259:7:1:0:3^{🇺🇸 NSONE2620:4d:4000::/48 2620:4D:4000::/48}
			PTR	`dns3.p01.nsone.net`
		A	198.51.44.65^{🇺🇸 NSONE198.51.44.0/24 198.51.44.0}
			PTR	`dns3.p01.nsone.net`
NS	`dns4.p01.nsone.net` ⚠️ Not in parent delegation
		A	2a00:edc0:6259:7:1::4^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns4.p01.nsone.net`
		A	198.51.45.65^{🇺🇸 NSONE198.51.45.0/24 198.51.45.0}
			PTR	`dns4.p01.nsone.net`
NS	`vddns1.cam.uchc.edu` ⚠️ Not in zone NS records
		A	2002:9b25:fffb::9b25:fffb^{HURRICANE2002::/16 RFC3068 - 6to4 anycast route provided by Nullroute.fi}
		A	155.37.255.251^{🇺🇸 AS394655155.37.224.0/19}
NS	`vddns2.cam.uchc.edu` ⚠️ Not in zone NS records
		A	155.37.255.252^{🇺🇸 AS394655155.37.224.0/19}
MX	`mx2.improvmx.com` ⭐
		A	2a05:d012:412:e201:1f6e:f6e4:8fd7:4678^{🇫🇷 Amazon2a05:d012:400::/38 AMAZON AWS}
		A	2a05:d012:412:e202:e81e:cc44:3b53:8a3d^{🇫🇷 Amazon2a05:d012:400::/38 AMAZON AWS}
		A	2a05:d012:412:e203:7e33:3d9c:28d7:ee20^{🇫🇷 Amazon2a05:d012:400::/38 AMAZON AWS}
		A	13.36.107.63^{🇫🇷 Amazon13.36.0.0/14 EC2 CDG Prefix}
			PTR	`ec2-13-36-107-63.eu-west-3.compute.amazonaws.com`
		A	13.36.222.39^{🇫🇷 Amazon13.36.0.0/14 EC2 CDG Prefix}
			PTR	`ec2-13-36-222-39.eu-west-3.compute.amazonaws.com`
		A	15.236.61.92^{🇫🇷 Amazon15.236.0.0/15 EC2 CDG prefix}
			PTR	`ec2-15-236-61-92.eu-west-3.compute.amazonaws.com`
TXT	`v=spf1 include:spf.improvmx.com ~all`
SOA	`dns1.p01.nsone.net`domains+netlify@netlify.com serial=1661609461

`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=1777055908

Previously MX for

biosimulations.org

Subdomains

www.biosimulations.org

Same first word

biosimulations.org

DNS History

15 records (11 active, 4 former)

●NSdns1.p01.nsone.net2026-04-20 → 2026-04-24 · 3 obs

○ 2017-02-07 17:35:12
● 2026-04-20 11:18:52
● 2026-04-24 18:52:14

●NSdns2.p01.nsone.net2026-04-20 → 2026-04-24 · 3 obs

○ 2017-02-07 17:35:12
● 2026-04-20 11:18:52
● 2026-04-24 18:52:14

●NSdns3.p01.nsone.net2026-04-20 → 2026-04-24 · 3 obs

○ 2017-02-07 17:35:12
● 2026-04-20 11:18:52
● 2026-04-24 18:52:14

●NSdns4.p01.nsone.net2026-04-20 → 2026-04-24 · 3 obs

○ 2017-02-07 17:35:12
● 2026-04-20 11:18:52
● 2026-04-24 18:52:14

○NSns1.hostpapa.com2015-07-09 → 2016-06-26 · 4 obs

● 2015-07-09 09:31:36
● 2016-06-26 21:03:38
○ 2017-02-07 17:35:12
○ 2026-04-24 18:52:14

○NSns2.hostpapa.com2015-07-09 → 2016-06-26 · 4 obs

● 2015-07-09 09:31:36
● 2016-06-26 21:03:38
○ 2017-02-07 17:35:12
○ 2026-04-24 18:52:14

●NSvddns1.cam.uchc.edu2026-04-20 → 2026-04-24 · 3 obs

○ 2017-02-07 17:35:12
● 2026-04-20 11:18:52
● 2026-04-24 18:52:14

●NSvddns2.cam.uchc.edu2026-04-20 → 2026-04-24 · 3 obs

○ 2017-02-07 17:35:12
● 2026-04-20 11:18:52
● 2026-04-24 18:52:14

○MXbiosimulations.org2015-07-09 → 2016-06-26 · 4 obs

● 2015-07-09 09:31:36
● 2016-06-26 21:03:38
○ 2017-02-07 17:35:12
○ 2026-04-24 18:52:14

●MXmx2.improvmx.com2026-04-20 → 2026-04-24 · 3 obs

○ 2017-02-07 17:35:12
● 2026-04-20 11:18:52
● 2026-04-24 18:52:14

●A18.208.88.1572026-04-20 → 2026-04-24 · 3 obs

○ 2017-02-07 17:35:12
● 2026-04-20 11:18:52
● 2026-04-24 18:52:14

●A2600:1f18:16e:df01::2582026-04-20 → 2026-04-24 · 3 obs

○ 2017-02-07 17:35:12
● 2026-04-20 11:18:52
● 2026-04-24 18:52:14

●A2600:1f18:16e:df01::2592026-04-20 → 2026-04-24 · 3 obs

○ 2017-02-07 17:35:12
● 2026-04-20 11:18:52
● 2026-04-24 18:52:14

○A69.90.162.1102015-07-09 → 2016-06-26 · 4 obs

● 2015-07-09 09:31:36
● 2016-06-26 21:03:38
○ 2017-02-07 17:35:12
○ 2026-04-24 18:52:14

●A98.84.224.1112026-04-20 → 2026-04-24 · 3 obs

○ 2017-02-07 17:35:12
● 2026-04-20 11:18:52
● 2026-04-24 18:52:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
biosimulations.org	vddns1.cam.uchc.edu, vddns2.cam.uchc.edu	-

✅ Authoritative Response

Server:155.37.255.251

NS records: vddns1.cam.uchc.edu, vddns2.cam.uchc.edu

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for biosimulations.org (unsigned zone)

⏱️ Timing

Total: 980ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`98.84.224.111, 18.208.88.157`
AAAA	2	`2600:1f18:16e:df01::259, 2600:1f18:16e:df01::258`
NS	4	`dns2.p01.nsone.net, dns3.p01.nsone.net...`
MX	1	`mx2.improvmx.com (pri: 20)`
TXT	1	`v=spf1 include:spf.improvmx.com ~all`
SOA	1	`dns1.p01.nsone.net domains+netlify.netli`

Analysis

Hierarchy

biosimulations.org is a parent of www.biosimulations.org.

IP Addresses

biosimulations.org points to four IP numbers: 2600:1f18:16e:df01::258, 2600:1f18:16e:df01::259, 18.208.88.157 and 98.84.224.111.

Other host names, for instance eternallitesoft.bitballoon.com, react-my-project.netlify.com, fastsoftbox.netlify.com, viela.org and datamake.netlify.app share IP numbers with biosimulations.org.

Name Servers

biosimulations.org is delegated to six name servers: vddns1.cam.uchc.edu, vddns2.cam.uchc.edu, dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net and dns4.p01.nsone.net.

biosimulations.org at least partially shares name servers with other domains, for instance the-sleep-store.com, windro.net, lieblingsdruck.de, expeditionanalytics.com and trjf.org.

These name servers are commonly used together with the name servers ns01.squarespacedns.com, ns02.squarespacedns.com, ns03.squarespacedns.com, ns04.squarespacedns.com, ns01.jnjdns.com, ns02.jnjdns.com, ns03.jnjdns.com, ns04.jnjdns.com, connect1.squarespacedns.com and connect2.squarespacedns.com.

Host names with two IP numbers:

vddns1.cam.uchc.edu points to 2002:9b25:fffb::9b25:fffb and 155.37.255.251.

dns1.p01.nsone.net points to 2620:4d:4000:6259:7:1:0:1 and 198.51.44.1.

dns2.p01.nsone.net points to 2a00:edc0:6259:7:1::2 and 198.51.45.1.

dns3.p01.nsone.net points to 2620:4d:4000:6259:7:1:0:3 and 198.51.44.65.

dns4.p01.nsone.net points to 2a00:edc0:6259:7:1::4 and 198.51.45.65.

Host names with one IP number:

vddns2.cam.uchc.edu points to 155.37.255.252.

Mail Servers

biosimulations.org is handled by a single mail server, mx2.improvmx.com.

biosimulations.org uses the same mail server configuration as other domains, such as shoneypot.org, bhmarketing.info, thedailyshirts.com, ibsai.com and driftinginrecursion.com.

biosimulations.org shares mail servers with other domains at least in part, for instance ewerlow.se, esdex.net, okdothis.com, ciframelodica.com.br and theislah.com.

These mail servers are often used together with the mail servers mx1.improvmx.com.

The host name mx2.improvmx.com resolves to six IP numbers: 2a05:d012:412:e201:1f6e:f6e4:8fd7:4678, 2a05:d012:412:e202:e81e:cc44:3b53:8a3d, 2a05:d012:412:e203:7e33:3d9c:28d7:ee20, 13.36.107.63, 13.36.222.39 and 15.236.61.92.

biosimulations.org - robtex.com