`mb2003.cn`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:4770^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:907e^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.71.112^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.144.126^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`alexia.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26af^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alexia.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2af^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`alexia.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22af^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`alexia.ns.cloudflare.com`
		A	108.162.194.175^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alexia.ns.cloudflare.com`
		A	162.159.38.175^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alexia.ns.cloudflare.com`
		A	172.64.34.175^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alexia.ns.cloudflare.com`
NS	`plato.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bdf^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`plato.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1df^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`plato.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21df^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`plato.ns.cloudflare.com`
		A	108.162.193.223^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`plato.ns.cloudflare.com`
		A	172.64.33.223^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`plato.ns.cloudflare.com`
		A	173.245.59.223^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`plato.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.71.112, 172.67.144.126
		IPv6 hints	2606:4700:3033::6815:4770, 2606:4700:3035::ac43:907e
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=49, name=cloudflare-ech.com
SOA	`alexia.ns.cloudflare.com`dns@cloudflare.com serial=2401160477

`cn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.cn` ⭐
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2034671644

Same first word

mb2003.cn

DNS History

17 records (6 active, 11 former)

●NSalexia.ns.cloudflare.com2026-03-26 → 2026-04-15 · 3 obs

○ 2016-12-06 08:48:34
● 2026-03-26 08:48:02
● 2026-04-15 03:36:04

○NSns1.alidns.com2015-10-30 → 2016-12-06 · 4 obs

● 2015-10-30 23:48:24
● 2016-12-06 08:48:34
○ 2026-03-26 08:48:02
○ 2026-04-15 03:36:04

○NSns2.alidns.com2015-10-30 → 2016-12-06 · 4 obs

● 2015-10-30 23:48:24
● 2016-12-06 08:48:34
○ 2026-03-26 08:48:02
○ 2026-04-15 03:36:04

●NSplato.ns.cloudflare.com2026-03-26 → 2026-04-15 · 3 obs

○ 2016-12-06 08:48:34
● 2026-03-26 08:48:02
● 2026-04-15 03:36:04

○MXmail.skrimple.com2015-06-05 → 2017-07-05 · 6 obs

● 2015-06-05 18:05:18
○ 2015-10-30 23:48:24
○ 2016-12-06 08:48:34
● 2017-07-05 17:56:46
○ 2026-03-26 08:48:02
○ 2026-04-15 03:36:04

○A103.232.215.1292017-07-05 → 2017-07-05 · 4 obs

○ 2016-12-06 08:48:34
● 2017-07-05 17:56:46
○ 2026-03-26 08:48:02
○ 2026-04-15 03:36:04

●A104.21.71.1122026-03-26 → 2026-04-15 · 7 obs

○ 2017-07-05 17:56:46
● 2026-03-26 08:48:02
○ 2026-03-31 06:18:44
● 2026-04-01 20:01:46
○ 2026-04-07 02:54:38
○ 2026-04-13 13:03:06
● 2026-04-15 03:36:04

○A124.16.31.1522015-10-30 → 2016-12-06 · 5 obs

○ 2015-06-05 18:05:18
● 2015-10-30 23:48:24
● 2016-12-06 08:48:34
○ 2017-07-05 17:56:46
○ 2026-04-15 03:36:04

●A172.67.144.1262026-03-26 → 2026-04-15 · 7 obs

○ 2017-07-05 17:56:46
● 2026-03-26 08:48:02
○ 2026-03-31 06:18:44
● 2026-04-01 20:01:46
○ 2026-04-07 02:54:38
○ 2026-04-13 13:03:06
● 2026-04-15 03:36:04

○A188.114.96.02026-03-31 → 2026-04-13 · 6 obs

○ 2026-03-26 08:48:02
● 2026-03-31 06:18:44
○ 2026-04-01 20:01:46
● 2026-04-07 02:54:38
● 2026-04-13 13:03:06
○ 2026-04-15 03:36:04

○A188.114.97.02026-03-31 → 2026-04-13 · 6 obs

○ 2026-03-26 08:48:02
● 2026-03-31 06:18:44
○ 2026-04-01 20:01:46
● 2026-04-07 02:54:38
● 2026-04-13 13:03:06
○ 2026-04-15 03:36:04

○A205.164.14.672015-06-05 → 2015-06-05 · 3 obs

● 2015-06-05 18:05:18
○ 2015-10-30 23:48:24
○ 2026-04-15 03:36:04

○A205.164.14.762015-06-05 → 2015-06-05 · 3 obs

● 2015-06-05 18:05:18
○ 2017-07-05 17:56:46
○ 2026-04-15 03:36:04

●A2606:4700:3033::6815:47702026-03-26 → 2026-04-15 · 6 obs

○ 2017-07-05 17:56:46
● 2026-03-26 08:48:02
● 2026-04-01 20:01:46
○ 2026-04-07 02:54:38
○ 2026-04-13 13:03:06
● 2026-04-15 03:36:04

●A2606:4700:3035::ac43:907e2026-03-26 → 2026-04-15 · 6 obs

○ 2017-07-05 17:56:46
● 2026-03-26 08:48:02
● 2026-04-01 20:01:46
○ 2026-04-07 02:54:38
○ 2026-04-13 13:03:06
● 2026-04-15 03:36:04

○A2a06:98c1:3120::2026-04-07 → 2026-04-13 · 4 obs

○ 2026-04-01 20:01:46
● 2026-04-07 02:54:38
● 2026-04-13 13:03:06
○ 2026-04-15 03:36:04

○A2a06:98c1:3121::2026-04-07 → 2026-04-13 · 4 obs

○ 2026-04-01 20:01:46
● 2026-04-07 02:54:38
● 2026-04-13 13:03:06
○ 2026-04-15 03:36:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
mb2003.cn	plato.ns.cloudflare.com, alexia.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.223

NS records: plato.ns.cloudflare.com, alexia.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mb2003.cn (unsigned zone)

⏱️ Timing

Total: 1352ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.71.112, 172.67.144.126`
AAAA	2	`2606:4700:3035::ac43:907e, 2606:4700:3033::6815:4770`
NS	2	`alexia.ns.cloudflare.com, plato.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`alexia.ns.cloudflare.com dns.cloudflare.`

Analysis

IP Addresses

mb2003.cn maps to four IP numbers: 2606:4700:3033::6815:4770, 2606:4700:3035::ac43:907e, 104.21.71.112 and 172.67.144.126.

Other host names, for instance playbigbio.com, basundi.com, nexustechnonode.digital, idealog.us and cpanel.playbigbio.com share IP numbers with mb2003.cn.

Name Servers

Two name servers alexia.ns.cloudflare.com and plato.ns.cloudflare.com handle delegation for mb2003.cn.

mb2003.cn uses the same name server setup as other domains, for example 03962979120.com, k2ds.net, salma-adv.net, youthwine.com and ffgwul.com.

mb2003.cn partially shares name servers with other domains; examples include techtutsonline.com, askcenter.com, tayo4d672.com, djtoursandtravels.com and lydzx.com.

These name servers are commonly used with garret.ns.cloudflare.com, diana.ns.cloudflare.com and brady.ns.cloudflare.com.

Host names with six IP numbers: alexia.ns.cloudflare.com points to: 2606:4700:50::a29f:26af, 2803:f800:50::6ca2:c2af, 2a06:98c1:50::ac40:22af, 108.162.194.175, 162.159.38.175 and 172.64.34.175; plato.ns.cloudflare.com points to: 2606:4700:58::adf5:3bdf, 2803:f800:50::6ca2:c1df, 2a06:98c1:50::ac40:21df, 108.162.193.223, 172.64.33.223 and 173.245.59.223.

mb2003.cn - robtex.com

mb2003.cn

cn