`mathnotes.org`

DNSSEC	⚠️ Not signed
A	207.55.240.14
		PTR	`cp09.deluxehosting.com`
NS	`ns1.deluxehosting.com` ⭐
		A	172.64.52.106^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns.deluxehosting.com` ⚠️ Not in parent delegation
		A	172.64.52.106^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.deluxehosting.com`
		A	172.64.53.190^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns3.deluxehosting.com`
		A	172.64.52.106^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns4.deluxehosting.com` ⚠️ Not in parent delegation
		A	172.64.53.190^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`mathnotes.org` ⭐
		A	207.55.240.14
			PTR	`cp09.deluxehosting.com`
TXT	`v=spf1 +a +mx +ip4:207.55.240.14 +include:relay.mailchannels.net -all`
SOA	`ns.deluxehosting.com`admin@deluxehosting.com 2017-03-11 #0

`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=1783231730

MX for

mathnotes.org

Same first word

mathnotes.net

mathnotes.com

mathnotes.cc

mathnotes.org

mathnotes.us

Similar names

DNS History

10 records (7 active, 3 former)

●NSns.deluxehosting.com2016-12-25 → 2026-07-05 · 3 obs

○ 2016-10-18 22:11:30
● 2016-12-25 10:10:34
● 2026-07-05 06:42:16

○NSns.liquidweb.com2015-08-30 → 2016-10-18 · 4 obs

● 2015-08-30 14:02:16
● 2016-10-18 22:11:30
○ 2016-12-25 10:10:34
○ 2026-07-05 06:42:16

●NSns1.deluxehosting.com2016-12-25 → 2026-07-05 · 3 obs

○ 2016-10-18 22:11:30
● 2016-12-25 10:10:34
● 2026-07-05 06:42:16

○NSns1.liquidweb.com2015-08-30 → 2016-10-18 · 4 obs

● 2015-08-30 14:02:16
● 2016-10-18 22:11:30
○ 2016-12-25 10:10:34
○ 2026-07-05 06:42:16

●NSns2.deluxehosting.com2016-12-25 → 2026-07-05 · 3 obs

○ 2016-10-18 22:11:30
● 2016-12-25 10:10:34
● 2026-07-05 06:42:16

●NSns3.deluxehosting.com2016-12-25 → 2026-07-05 · 3 obs

○ 2016-10-18 22:11:30
● 2016-12-25 10:10:34
● 2026-07-05 06:42:16

●NSns4.deluxehosting.com2016-12-25 → 2026-07-05 · 3 obs

○ 2016-10-18 22:11:30
● 2016-12-25 10:10:34
● 2026-07-05 06:42:16

●MXmathnotes.org2015-08-30 → 2026-07-05 · 2 obs

● 2015-08-30 14:02:16
● 2026-07-05 06:42:16

●A207.55.240.142016-09-24 → 2026-07-05 · 3 obs

○ 2016-08-04 01:18:20
● 2016-09-24 06:46:26
● 2026-07-05 06:42:16

○A67.225.205.1532015-08-30 → 2016-08-04 · 4 obs

● 2015-08-30 14:02:16
● 2016-08-04 01:18:20
○ 2016-09-24 06:46:26
○ 2026-07-05 06:42:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, d0.org.afilias-nst.org, b2.org.afilias-nst.org	-
mathnotes.org	ns1.deluxehosting.com, ns2.deluxehosting.com	-

✅ Authoritative Response

Server:172.64.53.190

NS records: ns1.deluxehosting.com, ns2.deluxehosting.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathnotes.org (unsigned zone)

⏱️ Timing

Total: 447ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`207.55.240.14`
NS	4	`ns4.deluxehosting.com, ns3.deluxehosting.com...`
MX	1	`mathnotes.org (pri: 0)`
TXT	1	`v=spf1 +a +mx +ip4:207.55.240.14 +includ`
SOA	1	`ns.deluxehosting.com admin.deluxehosting`

Analysis

Mail Server Role

mathnotes.org is listed as a mail server for itself.

IP Addresses

mathnotes.org resolves to one IP address: 207.55.240.14.

mathnotes.org shares its IP numbers with other host names like yorkmusicshop.com, triborovet.com and cp09.deluxehosting.com.

Name Servers

mathnotes.org has five name servers, which are ns1.deluxehosting.com, ns2.deluxehosting.com, ns3.deluxehosting.com and two others.

mathnotes.org partially shares its NS delegation with several other domains, including ancestral.com, deadwhisper.com, rochesterallergy.com and two others.

In DNS configurations, these name servers often share authority with ns4.deluxehosting.com, ns.deluxehosting.com, ns1.hostpapa.com and 6 other name servers.

Hosts with just one IP address:

ns1.deluxehosting.com points to 172.64.52.106.

ns2.deluxehosting.com points to 172.64.53.190.

ns3.deluxehosting.com points to 172.64.52.106.

ns4.deluxehosting.com points to 172.64.53.190.

ns.deluxehosting.com points to 172.64.52.106.

The host names ns1.deluxehosting.com, ns3.deluxehosting.com and ns.deluxehosting.com each resolve to 172.64.52.106.

ns2.deluxehosting.com and ns4.deluxehosting.com are host names that each point to 172.64.53.190 IP addresses.