`mechanicalengineeringnetbase.cn`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:9383^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:1cc4^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.28.196^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.147.131^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`bart.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b47^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bart.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c147^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`bart.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2147^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`bart.ns.cloudflare.com`
		A	108.162.193.71^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bart.ns.cloudflare.com`
		A	172.64.33.71^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bart.ns.cloudflare.com`
		A	173.245.59.71^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bart.ns.cloudflare.com`
NS	`hera.ns.cloudflare.com`
		A	2606:4700:50::adf5:3aa2^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hera.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0a2^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hera.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20a2^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hera.ns.cloudflare.com`
		A	108.162.192.162^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hera.ns.cloudflare.com`
		A	172.64.32.162^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hera.ns.cloudflare.com`
		A	173.245.58.162^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hera.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.28.196, 172.67.147.131
		IPv6 hints	2606:4700:3030::ac43:9383, 2606:4700:3037::6815:1cc4
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=213, name=cloudflare-ech.com
SOA	`bart.ns.cloudflare.com`dns@cloudflare.com serial=2409777070

`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=2035058519

Same first word

mechanicalengineeringnetbase.cn

DNS History

11 records (6 active, 5 former)

●NSbart.ns.cloudflare.com2026-07-13 → 2026-07-19 · 3 obs

○ 2019-03-05 20:29:52
● 2026-07-13 11:06:50
● 2026-07-19 03:11:56

○NSdns1.idp365.net2015-07-19 → 2019-03-05 · 4 obs

● 2015-07-19 12:51:26
● 2019-03-05 20:29:52
○ 2026-07-13 11:06:50
○ 2026-07-19 03:11:56

○NSdns2.idp365.net2015-07-19 → 2019-03-05 · 4 obs

● 2015-07-19 12:51:26
● 2019-03-05 20:29:52
○ 2026-07-13 11:06:50
○ 2026-07-19 03:11:56

○NSdns3.idp365.net2015-07-19 → 2019-03-05 · 4 obs

● 2015-07-19 12:51:26
● 2019-03-05 20:29:52
○ 2026-07-13 11:06:50
○ 2026-07-19 03:11:56

●NShera.ns.cloudflare.com2026-07-13 → 2026-07-19 · 3 obs

○ 2019-03-05 20:29:52
● 2026-07-13 11:06:50
● 2026-07-19 03:11:56

●A104.21.28.1962026-07-13 → 2026-07-19 · 3 obs

○ 2019-03-05 20:29:52
● 2026-07-13 11:06:50
● 2026-07-19 03:11:56

●A172.67.147.1312026-07-13 → 2026-07-19 · 3 obs

○ 2019-03-05 20:29:52
● 2026-07-13 11:06:50
● 2026-07-19 03:11:56

○A208.254.74.772015-07-19 → 2015-12-08 · 4 obs

● 2015-07-19 12:51:26
● 2015-12-08 19:20:00
○ 2016-03-09 22:42:10
○ 2026-07-19 03:11:56

○A217.19.248.1322016-03-09 → 2019-03-05 · 5 obs

○ 2015-12-08 19:20:00
● 2016-03-09 22:42:10
● 2019-03-05 20:29:52
○ 2026-07-13 11:06:50
○ 2026-07-19 03:11:56

●A2606:4700:3030::ac43:93832026-07-13 → 2026-07-19 · 3 obs

○ 2019-03-05 20:29:52
● 2026-07-13 11:06:50
● 2026-07-19 03:11:56

●A2606:4700:3037::6815:1cc42026-07-13 → 2026-07-19 · 3 obs

○ 2019-03-05 20:29:52
● 2026-07-13 11:06:50
● 2026-07-19 03:11:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
mechanicalengineeringnetbase.cn	bart.ns.cloudflare.com, hera.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.162

NS records: bart.ns.cloudflare.com, hera.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mechanicalengineeringnetbase.cn (unsigned zone)

⏱️ Timing

Total: 954ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.28.196, 172.67.147.131`
AAAA	2	`2606:4700:3037::6815:1cc4, 2606:4700:3030::ac43:9383`
NS	2	`bart.ns.cloudflare.com, hera.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`bart.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

mechanicalengineeringnetbase.cn has four IP addresses: 104.21.28.196, 172.67.147.131, 2606:4700:3030::ac43:9383 and 2606:4700:3037::6815:1cc4.

Among the host names that share IP numbers with mechanicalengineeringnetbase.cn are kwunching.com, ace90.bet, technotip.com and two others.

Name Servers

mechanicalengineeringnetbase.cn has two authoritative name servers — bart.ns.cloudflare.com and hera.ns.cloudflare.com.

mechanicalengineeringnetbase.cn has the same name server delegation as a number of other domains, such as worldteaexpoeurope.com, electronic-projects.net, emilyexpo.events and two more.

mechanicalengineeringnetbase.cn shares at least some of its name servers with other domains, including autozuki.com, professionalsdata.com, hancockctnso.gov and two others.

These name servers are frequently seen alongside the name servers kai.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

bart.ns.cloudflare.com points to 108.162.193.71, 172.64.33.71, 173.245.59.71 and 3 other IP addresses.

hera.ns.cloudflare.com points to 108.162.192.162, 172.64.32.162, 173.245.58.162 and 3 other IP addresses.

mechanicalengineeringnetbase.cn - robtex.com