`mdsuonline.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:df0c^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:3b6a^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.59.106^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.223.12^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`josh.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b7e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`josh.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c17e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`josh.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:217e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`josh.ns.cloudflare.com`
		A	108.162.193.126^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`josh.ns.cloudflare.com`
		A	172.64.33.126^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`josh.ns.cloudflare.com`
		A	173.245.59.126^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`josh.ns.cloudflare.com`
NS	`sima.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ade^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sima.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0de^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sima.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20de^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sima.ns.cloudflare.com`
		A	108.162.192.222^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sima.ns.cloudflare.com`
		A	172.64.32.222^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sima.ns.cloudflare.com`
		A	173.245.58.222^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sima.ns.cloudflare.com`
TXT	`google-site-verification=F8zkD7dSG_e_R4XkjrSZ8evayxf6SQ9sNGJhFakCA6o`
TXT	`google-site-verification=NAJJe2DjhmykJ53ZKVOCVIKlDTlgix0GTRKYmnxZFGg`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.59.106, 172.67.223.12
		IPv6 hints	2606:4700:3030::ac43:df0c, 2606:4700:3036::6815:3b6a
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=250, name=cloudflare-ech.com
SOA	`josh.ns.cloudflare.com`dns@cloudflare.com serial=2399986180

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1776062257

Previously MX for

mdsuonline.com

Same first word

mdsuonline.com

DNS History

10 records (6 active, 4 former)

●NSjosh.ns.cloudflare.com2026-04-01 → 2026-04-13 · 3 obs

○ 2018-12-23 07:27:08
● 2026-04-01 00:58:20
● 2026-04-13 06:41:32

○NSns1.bh-58.webhostbox.net2017-01-26 → 2017-01-26 · 3 obs

● 2017-01-26 15:39:28
○ 2018-12-23 07:27:08
○ 2026-04-13 06:41:32

○NSns2.bh-58.webhostbox.net2017-01-26 → 2017-01-26 · 3 obs

● 2017-01-26 15:39:28
○ 2018-12-23 07:27:08
○ 2026-04-13 06:41:32

●NSsima.ns.cloudflare.com2026-04-01 → 2026-04-13 · 3 obs

○ 2018-12-23 07:27:08
● 2026-04-01 00:58:20
● 2026-04-13 06:41:32

○MXmdsuonline.com2017-01-26 → 2017-01-26 · 3 obs

● 2017-01-26 15:39:28
○ 2018-12-23 07:27:08
○ 2026-04-13 06:41:32

●A104.21.59.1062026-04-01 → 2026-04-13 · 3 obs

○ 2018-12-23 07:27:08
● 2026-04-01 00:58:20
● 2026-04-13 06:41:32

●A172.67.223.122026-04-01 → 2026-04-13 · 3 obs

○ 2018-12-23 07:27:08
● 2026-04-01 00:58:20
● 2026-04-13 06:41:32

○A199.79.63.242017-01-26 → 2017-01-26 · 3 obs

● 2017-01-26 15:39:28
○ 2018-12-23 07:27:08
○ 2026-04-13 06:41:32

●A2606:4700:3030::ac43:df0c2026-04-01 → 2026-04-13 · 3 obs

○ 2018-12-23 07:27:08
● 2026-04-01 00:58:20
● 2026-04-13 06:41:32

●A2606:4700:3036::6815:3b6a2026-04-01 → 2026-04-13 · 3 obs

○ 2018-12-23 07:27:08
● 2026-04-01 00:58:20
● 2026-04-13 06:41:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
mdsuonline.com	josh.ns.cloudflare.com, sima.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.222

NS records: josh.ns.cloudflare.com, sima.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mdsuonline.com (unsigned zone)

⏱️ Timing

Total: 113ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.59.106, 172.67.223.12`
AAAA	2	`2606:4700:3030::ac43:df0c, 2606:4700:3036::6815:3b6a`
NS	2	`josh.ns.cloudflare.com, sima.ns.cloudflare.com`
TXT	2	`google-site-verification=F8zkD7dSG_e_R4X, google-site-verification=NAJJe2DjhmykJ53`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`josh.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (josh.ns.cloudflare.com, josh.ns.cloudflare.com, josh.ns.cloudflare.com...)

Analysis

IP Addresses

mdsuonline.com refers to four IP numbers: 2606:4700:3030::ac43:df0c, 2606:4700:3036::6815:3b6a, 104.21.59.106 and 172.67.223.12.

Other host names, for instance ptpt6.com, gangbanwangchang.net, kanahanazawa.com, mass.swt.im and racarubronegra.com.br share IP numbers with mdsuonline.com.

Name Servers

mdsuonline.com's delegation uses two name servers: josh.ns.cloudflare.com and sima.ns.cloudflare.com.

mdsuonline.com uses the same name server setup as other domains, such as rgpvonline.com, aktuonline.com, a2zsubjects.com, gtuonline.com and dbrauonline.com.

mdsuonline.com at least partially shares name servers with other domains, including zczshb.com, pbc.net.nz, 82b1.com, hostinghq.eu and hansolrella.com.

These name servers are often used with alice.ns.cloudflare.com and owen.ns.cloudflare.com.

Host names with six IP numbers:

josh.ns.cloudflare.com points to 2606:4700:58::adf5:3b7e, 2803:f800:50::6ca2:c17e, 2a06:98c1:50::ac40:217e, 108.162.193.126, 172.64.33.126 and 173.245.59.126.

sima.ns.cloudflare.com points to 2606:4700:50::adf5:3ade, 2803:f800:50::6ca2:c0de, 2a06:98c1:50::ac40:20de, 108.162.192.222, 172.64.32.222 and 173.245.58.222.

mdsuonline.com - robtex.com

mdsuonline.com

com

Previously MX for

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

`mdsuonline.com`

`com`