ncstd.cn - dns.ninja

`ncstd.cn`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:3682^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:8ab6^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.54.130^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.138.182^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`elisa.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2636^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elisa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c236^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`elisa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2236^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`elisa.ns.cloudflare.com`
		A	108.162.194.54^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elisa.ns.cloudflare.com`
		A	162.159.38.54^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elisa.ns.cloudflare.com`
		A	172.64.34.54^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elisa.ns.cloudflare.com`
NS	`max.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b84^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`max.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c184^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`max.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2184^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`max.ns.cloudflare.com`
		A	108.162.193.132^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`max.ns.cloudflare.com`
		A	172.64.33.132^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`max.ns.cloudflare.com`
		A	173.245.59.132^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`max.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.54.130, 172.67.138.182
		IPv6 hints	2606:4700:3034::6815:3682, 2606:4700:3034::ac43:8ab6
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=35, name=cloudflare-ech.com
SOA	`elisa.ns.cloudflare.com`dns@cloudflare.com serial=2407215686

`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 2035-03-20 #48

Same first word

ncstd.cn

ncstd.com

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DNS History

15 records (6 active, 9 former)

●NSelisa.ns.cloudflare.com2026-02-14 → 2026-07-12 · 3 obs

○ 2015-11-17 12:18:34
● 2026-02-14 21:15:20
● 2026-07-12 11:24:30

●NSmax.ns.cloudflare.com2026-02-14 → 2026-07-12 · 3 obs

○ 2015-11-17 12:18:34
● 2026-02-14 21:15:20
● 2026-07-12 11:24:30

○NSns1.eedns.com2015-07-18 → 2015-07-18 · 3 obs

● 2015-07-18 17:49:48
○ 2015-11-17 12:18:34
○ 2026-07-12 11:24:30

●A104.21.54.1302026-02-25 → 2026-07-12 · 7 obs

○ 2026-02-14 21:15:20
● 2026-02-25 21:57:48
● 2026-06-07 18:25:42
○ 2026-06-09 19:39:42
● 2026-06-26 03:43:10
○ 2026-07-10 05:51:44
● 2026-07-12 11:24:30

○A172.64.80.12026-02-14 → 2026-07-12 · 2 obs

○ 2026-02-14 21:15:20
○ 2026-07-12 11:24:30

●A172.67.138.1822026-02-25 → 2026-07-12 · 7 obs

○ 2026-02-14 21:15:20
● 2026-02-25 21:57:48
● 2026-06-07 18:25:42
○ 2026-06-09 19:39:42
● 2026-06-26 03:43:10
○ 2026-07-10 05:51:44
● 2026-07-12 11:24:30

○A188.114.96.02026-02-14 → 2026-07-10 · 8 obs

○ 2015-11-17 12:18:34
● 2026-02-14 21:15:20
○ 2026-02-25 21:57:48
○ 2026-06-07 18:25:42
● 2026-06-09 19:39:42
○ 2026-06-26 03:43:10
● 2026-07-10 05:51:44
○ 2026-07-12 11:24:30

○A188.114.97.02026-02-14 → 2026-07-10 · 8 obs

○ 2015-11-17 12:18:34
● 2026-02-14 21:15:20
○ 2026-02-25 21:57:48
○ 2026-06-07 18:25:42
● 2026-06-09 19:39:42
○ 2026-06-26 03:43:10
● 2026-07-10 05:51:44
○ 2026-07-12 11:24:30

○A204.44.103.1092015-07-18 → 2015-07-18 · 3 obs

● 2015-07-18 17:49:48
○ 2015-11-17 12:18:34
○ 2026-07-12 11:24:30

●A2606:4700:3034::6815:36822026-06-26 → 2026-07-12 · 4 obs

○ 2026-06-09 19:39:42
● 2026-06-26 03:43:10
○ 2026-07-10 05:51:44
● 2026-07-12 11:24:30

●A2606:4700:3034::ac43:8ab62026-06-26 → 2026-07-12 · 4 obs

○ 2026-06-09 19:39:42
● 2026-06-26 03:43:10
○ 2026-07-10 05:51:44
● 2026-07-12 11:24:30

○A2606:4700:3035::ac43:8ab62026-02-25 → 2026-06-07 · 5 obs

○ 2026-02-14 21:15:20
● 2026-02-25 21:57:48
● 2026-06-07 18:25:42
○ 2026-06-09 19:39:42
○ 2026-07-12 11:24:30

○A2606:4700:3036::6815:36822026-02-25 → 2026-06-07 · 5 obs

○ 2026-02-14 21:15:20
● 2026-02-25 21:57:48
● 2026-06-07 18:25:42
○ 2026-06-09 19:39:42
○ 2026-07-12 11:24:30

○A2a06:98c1:3120::2026-02-14 → 2026-07-10 · 8 obs

○ 2015-11-17 12:18:34
● 2026-02-14 21:15:20
○ 2026-02-25 21:57:48
○ 2026-06-07 18:25:42
● 2026-06-09 19:39:42
○ 2026-06-26 03:43:10
● 2026-07-10 05:51:44
○ 2026-07-12 11:24:30

○A2a06:98c1:3121::2026-02-14 → 2026-07-10 · 8 obs

○ 2015-11-17 12:18:34
● 2026-02-14 21:15:20
○ 2026-02-25 21:57:48
○ 2026-06-07 18:25:42
● 2026-06-09 19:39:42
○ 2026-06-26 03:43:10
● 2026-07-10 05:51:44
○ 2026-07-12 11:24:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	e.dns.cn, c.dns.cn, a.dns.cn, b.dns.cn...	-
ncstd.cn	max.ns.cloudflare.com, elisa.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.132

NS records: max.ns.cloudflare.com, elisa.ns.cloudflare.com

🔒 DNSSEC Status

❌ Bogus (DNSSEC validation failed)

Validation error at cn: Error: DNS query timeout: 203.119.29.1 for DNSKEY cn

⏱️ Timing

Total: 3277ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.138.182, 104.21.54.130`
AAAA	2	`2606:4700:3034::6815:3682, 2606:4700:3034::ac43:8ab6`
NS	2	`elisa.ns.cloudflare.com, max.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`elisa.ns.cloudflare.com dns.cloudflare.c`

Analysis

IP Addresses

ncstd.cn has four IP addresses: 104.21.54.130, 172.67.138.182, 2606:4700:3034::6815:3682 and 2606:4700:3034::ac43:8ab6.

Additional host names — studentcareinfotech.com, bestbiowala.com, arrisebpo.com and two others — share IP numbers with ncstd.cn.

Name Servers

ncstd.cn uses two name servers for its delegation: elisa.ns.cloudflare.com and max.ns.cloudflare.com.

ncstd.cn shares its name server setup with other domains, including kobomach.cn, 270.net.cn, fvwt.cn and two others.

ncstd.cn has at least partial name server overlap with other domains, such as ericjj.com, pmlap.com, downloaddevtools.com and two others.

Host names with 6 IP numbers:

Hostname elisa.ns.cloudflare.com directs to 108.162.194.54, 162.159.38.54 and 172.64.34.54 along with 3 other IP addresses.

Hostname max.ns.cloudflare.com directs to 108.162.193.132, 172.64.33.132 and 173.245.59.132 along with 3 other IP addresses.