mathopt.org - dns.ninja

`mathopt.org`

DNSSEC	⚠️ Not signed
A	23.20.63.167^{🇺🇸 Amazon23.20.0.0/15 EC2 IAD prefix}
		PTR	`ec2-23-20-63-167.compute-1.amazonaws.com`
NS	`davina.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2628^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`davina.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c228^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`davina.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2228^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`davina.ns.cloudflare.com`
		A	108.162.194.40^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`davina.ns.cloudflare.com`
		A	162.159.38.40^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`davina.ns.cloudflare.com`
		A	172.64.34.40^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`davina.ns.cloudflare.com`
NS	`denver.ns.cloudflare.com`
		A	2606:4700:58::a29f:2cc4^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`denver.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3c4^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`denver.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23c4^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`denver.ns.cloudflare.com`
		A	108.162.195.196^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`denver.ns.cloudflare.com`
		A	162.159.44.196^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`denver.ns.cloudflare.com`
		A	172.64.35.196^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`denver.ns.cloudflare.com`
MX	`mail.mathopt.org` ⭐
		A	23.20.63.167^{🇺🇸 Amazon23.20.0.0/15 EC2 IAD prefix}
			PTR	`ec2-23-20-63-167.compute-1.amazonaws.com`
TXT	`google-site-verification=mwRP3Mj6yCbi0-AiJPt-C6WDoet6bMlkmB3g_pSREpg`
TXT	`v=spf1 a mx ip4:23.20.63.167 include:amazonses.com ~all`
SOA	`davina.ns.cloudflare.com`dns@cloudflare.com serial=2411019368

`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=1785670457

rank #863893 globally
rank #66056 in the tld
WOT: SAFE (61/100)

Subdomains

mail.mathopt.org

www.mathopt.org

Same first word

mathopt.com

mathopt.de

mathopt.org

Similar names

topmath.de

photmat.eu

mattohp.com

mathpot.com

pamtoth.com

potmath.com

mathtop.com

matphot.com

mattohp.jp

optmath.com

topmath.com

topmath.info

tomphat.com.au

topmath.org

topmath.ir

mathtop.com.cn

thompat.de

topmath.ca

DNS History

13 records (4 active, 9 former)

●NSdavina.ns.cloudflare.com2026-04-08 → 2026-08-02 · 3 obs

○ 2017-07-02 07:42:22
● 2026-04-08 18:33:26
● 2026-08-02 12:03:54

●NSdenver.ns.cloudflare.com2026-04-08 → 2026-08-02 · 3 obs

○ 2017-07-02 07:42:22
● 2026-04-08 18:33:26
● 2026-08-02 12:03:54

○NSns1.dnspark.com2015-07-14 → 2017-07-02 · 4 obs

● 2015-07-14 21:52:28
● 2017-07-02 07:42:22
○ 2026-04-08 18:33:26
○ 2026-08-02 12:03:54

○NSns2.dnspark.net2015-07-14 → 2017-07-02 · 4 obs

● 2015-07-14 21:52:28
● 2017-07-02 07:42:22
○ 2026-04-08 18:33:26
○ 2026-08-02 12:03:54

○NSns3.dnspark.net2015-07-14 → 2017-07-02 · 4 obs

● 2015-07-14 21:52:28
● 2017-07-02 07:42:22
○ 2026-04-08 18:33:26
○ 2026-08-02 12:03:54

○NSns4.dnspark.net2015-07-14 → 2017-07-02 · 4 obs

● 2015-07-14 21:52:28
● 2017-07-02 07:42:22
○ 2026-04-08 18:33:26
○ 2026-08-02 12:03:54

○NSns5.dnspark.net2015-07-14 → 2017-07-02 · 4 obs

● 2015-07-14 21:52:28
● 2017-07-02 07:42:22
○ 2026-04-08 18:33:26
○ 2026-08-02 12:03:54

●MXmail.mathopt.org2026-04-08 → 2026-08-02 · 3 obs

○ 2017-07-02 07:42:22
● 2026-04-08 18:33:26
● 2026-08-02 12:03:54

○MXmailer.siam.org2015-07-14 → 2017-07-02 · 4 obs

● 2015-07-14 21:52:28
● 2017-07-02 07:42:22
○ 2026-04-08 18:33:26
○ 2026-08-02 12:03:54

○MXus-smtp-inbound-1.mimecast.com2015-07-14 → 2017-07-02 · 4 obs

● 2015-07-14 21:52:28
● 2017-07-02 07:42:22
○ 2026-04-08 18:33:26
○ 2026-08-02 12:03:54

○MXus-smtp-inbound-2.mimecast.com2015-07-14 → 2017-07-02 · 4 obs

● 2015-07-14 21:52:28
● 2017-07-02 07:42:22
○ 2026-04-08 18:33:26
○ 2026-08-02 12:03:54

○A130.73.108.82015-07-14 → 2017-07-02 · 4 obs

● 2015-07-14 21:52:28
● 2017-07-02 07:42:22
○ 2026-04-08 18:33:26
○ 2026-08-02 12:03:54

●A23.20.63.1672026-04-08 → 2026-08-02 · 3 obs

○ 2017-07-02 07:42:22
● 2026-04-08 18:33:26
● 2026-08-02 12:03:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
mathopt.org	denver.ns.cloudflare.com, davina.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.195.196

NS records: denver.ns.cloudflare.com, davina.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathopt.org (unsigned zone)

⏱️ Timing

Total: 282ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`23.20.63.167`
NS	2	`davina.ns.cloudflare.com, denver.ns.cloudflare.com`
MX	1	`mail.mathopt.org (pri: 10)`
TXT	2	`google-site-verification=mwRP3Mj6yCbi0-A, v=spf1 a mx ip4:23.20.63.167 include:ama`
SOA	1	`davina.ns.cloudflare.com dns.cloudflare.`

Analysis

Hierarchy

mail.mathopt.org and www.mathopt.org are both subdomains of mathopt.org.

IP Addresses

mathopt.org resolves to one IP address: 23.20.63.167.

Additional host names — including mail.mathopt.org and ec2-23-20-63-167.compute-1.amazonaws.com — share IP numbers with mathopt.org.

Name Servers

The NS records for mathopt.org delegate to davina.ns.cloudflare.com and denver.ns.cloudflare.com.

mathopt.org uses the same name servers as several other domains — among them techbridge.jp, aimhc.com, fuhgodycliff.pages.dev and two more.

mathopt.org has at least partial name server overlap with other domains, such as gzwrgd.com, ironhorse.com.au, glasswallsolutions.com and two others.

It is common to find these name servers paired with the name servers susan.ns.cloudflare.com, troy.ns.cloudflare.com, logan.ns.cloudflare.com and ashton.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

davina.ns.cloudflare.com maps to 108.162.194.40, 162.159.38.40, 172.64.34.40 and 3 additional IP addresses.

denver.ns.cloudflare.com maps to 108.162.195.196, 162.159.44.196, 172.64.35.196 and 3 additional IP addresses.

Mail Servers

Mail for mathopt.org is handled by a single mail server, mail.mathopt.org.

mail.mathopt.org resolves to 23.20.63.167 and no other IP number.