`math-master.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:42f^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:83a9^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.4.47^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.131.169^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`cory.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b5d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cory.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c15d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cory.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:215d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cory.ns.cloudflare.com`
		A	108.162.193.93^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cory.ns.cloudflare.com`
		A	172.64.33.93^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cory.ns.cloudflare.com`
		A	173.245.59.93^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cory.ns.cloudflare.com`
NS	`desi.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a60^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`desi.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c060^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`desi.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2060^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`desi.ns.cloudflare.com`
		A	108.162.192.96^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`desi.ns.cloudflare.com`
		A	172.64.32.96^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`desi.ns.cloudflare.com`
		A	173.245.58.96^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`desi.ns.cloudflare.com`
MX	`eforward1.registrar-servers.com` ⭐
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
MX	`eforward2.registrar-servers.com` ⭐
		A	162.255.118.52^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward2.registrar-servers.com`
MX	`eforward3.registrar-servers.com` ⭐
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
MX	`eforward4.registrar-servers.com`⁽¹⁵⁾
		A	162.255.118.52^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward2.registrar-servers.com`
MX	`eforward5.registrar-servers.com`⁽²⁰⁾
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
TXT	`google-site-verification=DRninjj96HS--G8ZptNHFEHQY5Pm1cuqQozv_ry0tC0`
TXT	`google-site-verification=MQg3E5kmD2KbtZguezcSAGA013LnF5N2Ok1O4FuAXLU`
TXT	`v=spf1 include:spf.efwd.registrar-servers.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.4.47, 172.67.131.169
		IPv6 hints	2606:4700:3034::6815:42f, 2606:4700:3034::ac43:83a9
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=143, name=cloudflare-ech.com
SOA	`cory.ns.cloudflare.com`dns@cloudflare.com serial=2404796301

`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=1782881147

Same first word

math-master.org

DNS History

15 records (11 active, 4 former)

●NScory.ns.cloudflare.com2026-06-30 → 2026-07-01 · 2 obs

● 2026-06-30 02:19:28
● 2026-07-01 04:59:48

●NSdesi.ns.cloudflare.com2026-06-30 → 2026-07-01 · 2 obs

● 2026-06-30 02:19:28
● 2026-07-01 04:59:48

●MXeforward1.registrar-servers.com2026-06-30 → 2026-07-01 · 2 obs

● 2026-06-30 02:19:28
● 2026-07-01 04:59:48

●MXeforward2.registrar-servers.com2026-06-30 → 2026-07-01 · 2 obs

● 2026-06-30 02:19:28
● 2026-07-01 04:59:48

●MXeforward3.registrar-servers.com2026-06-30 → 2026-07-01 · 2 obs

● 2026-06-30 02:19:28
● 2026-07-01 04:59:48

●MXeforward4.registrar-servers.com2026-06-30 → 2026-07-01 · 2 obs

● 2026-06-30 02:19:28
● 2026-07-01 04:59:48

●MXeforward5.registrar-servers.com2026-06-30 → 2026-07-01 · 2 obs

● 2026-06-30 02:19:28
● 2026-07-01 04:59:48

●A104.21.4.472026-07-01 → 2026-07-01 · 3 obs

○ 2026-06-30 02:19:28
● 2026-07-01 04:59:46
● 2026-07-01 04:59:48

●A172.67.131.1692026-07-01 → 2026-07-01 · 3 obs

○ 2026-06-30 02:19:28
● 2026-07-01 04:59:46
● 2026-07-01 04:59:48

○A188.114.96.02026-06-30 → 2026-06-30 · 3 obs

● 2026-06-30 02:19:28
○ 2026-07-01 04:59:46
○ 2026-07-01 04:59:48

○A188.114.97.02026-06-30 → 2026-06-30 · 3 obs

● 2026-06-30 02:19:28
○ 2026-07-01 04:59:46
○ 2026-07-01 04:59:48

●A2606:4700:3034::6815:42f2026-07-01 → 2026-07-01 · 3 obs

○ 2026-06-30 02:19:28
● 2026-07-01 04:59:46
● 2026-07-01 04:59:48

●A2606:4700:3034::ac43:83a92026-07-01 → 2026-07-01 · 3 obs

○ 2026-06-30 02:19:28
● 2026-07-01 04:59:46
● 2026-07-01 04:59:48

○A2a06:98c1:3120::2026-06-30 → 2026-06-30 · 3 obs

● 2026-06-30 02:19:28
○ 2026-07-01 04:59:46
○ 2026-07-01 04:59:48

○A2a06:98c1:3121::2026-06-30 → 2026-06-30 · 3 obs

● 2026-06-30 02:19:28
○ 2026-07-01 04:59:46
○ 2026-07-01 04:59:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
math-master.org	desi.ns.cloudflare.com, cory.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.96

NS records: desi.ns.cloudflare.com, cory.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for math-master.org (unsigned zone)

⏱️ Timing

Total: 419ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.131.169, 104.21.4.47`
AAAA	2	`2606:4700:3034::ac43:83a9, 2606:4700:3034::6815:42f`
NS	2	`cory.ns.cloudflare.com, desi.ns.cloudflare.com`
MX	5	`eforward1.registrar-servers.com (pri: 10, eforward2.registrar-servers.com (pri: 10...`
TXT	3	`google-site-verification=DRninjj96HS--G8, google-site-verification=MQg3E5kmD2KbtZg...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`cory.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

math-master.org resolves to four IP addresses: 104.21.4.47, 172.67.131.169, 2606:4700:3034::6815:42f and 2606:4700:3034::ac43:83a9.

Two other host names, along with link3.nusantara4dori.vip, www.taaaf.com and www.ayhnnqidbjxep.online, also share IP numbers with math-master.org.

Name Servers

Two name servers handle the delegation for math-master.org: cory.ns.cloudflare.com and desi.ns.cloudflare.com.

math-master.org shares its NS records with other domains, for example busytask.com, gsc.scot, avrilpaton.co.uk and two others.

math-master.org has at least partial name server overlap with other domains, such as mpjia.cn, dacsanchonhahang.vn, chinacnwind.com and two others.

It is common to find these name servers paired with the name servers edward.ns.cloudflare.com, perla.ns.cloudflare.com, raquel.ns.cloudflare.com and damiete.ns.cloudflare.com.

DNS names with 6 IP addresses:

cory.ns.cloudflare.com resolves to 108.162.193.93, 172.64.33.93 and 173.245.59.93 among others, with 3 other IP addresses in total.

desi.ns.cloudflare.com resolves to 108.162.192.96, 172.64.32.96 and 173.245.58.96 among others, with 3 other IP addresses in total.

Mail Servers

math-master.org is handled by five mail servers: eforward1.registrar-servers.com, eforward2.registrar-servers.com, eforward3.registrar-servers.com and two others.

There is at least a partial MX overlap between math-master.org and other domains, including systemadmin247.com, maelga.com, pmln.us and two others.

eforward4.registrar-servers.com, eforward5.registrar-servers.com, eforward6.registrar-servers.com and eforward7.registrar-servers.com are mail servers that frequently appear together with these mail servers.

Host names that point to one IP address:

The hostname eforward1.registrar-servers.com resolves to 162.255.118.51.

The hostname eforward2.registrar-servers.com resolves to 162.255.118.52.

The hostname eforward3.registrar-servers.com resolves to 162.255.118.51.

The hostname eforward4.registrar-servers.com resolves to 162.255.118.52.

The hostname eforward5.registrar-servers.com resolves to 162.255.118.51.

Each of eforward1.registrar-servers.com, eforward3.registrar-servers.com and eforward5.registrar-servers.com resolves to 162.255.118.51.

eforward2.registrar-servers.com along with eforward4.registrar-servers.com each resolve to 162.255.118.52 IP addresses.