`51advance.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:250d^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:ca67^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.37.13^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.202.103^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`kim.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a7e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kim.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c07e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kim.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:207e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kim.ns.cloudflare.com`
		A	108.162.192.126^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kim.ns.cloudflare.com`
		A	172.64.32.126^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kim.ns.cloudflare.com`
		A	173.245.58.126^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kim.ns.cloudflare.com`
NS	`martin.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c57^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`martin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c357^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`martin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2357^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`martin.ns.cloudflare.com`
		A	108.162.195.87^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`martin.ns.cloudflare.com`
		A	162.159.44.87^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`martin.ns.cloudflare.com`
		A	172.64.35.87^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`martin.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.37.13, 172.67.202.103
		IPv6 hints	2606:4700:3033::6815:250d, 2606:4700:3035::ac43:ca67
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=43, name=cloudflare-ech.com
SOA	`kim.ns.cloudflare.com`dns@cloudflare.com serial=2400911983

`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=1778616231

Same first word

51advance.com

DNS History

17 records (6 active, 11 former)

○NSdns10.hichina.com2016-04-18 → 2017-02-10 · 5 obs

○ 2015-10-30 02:09:46
● 2016-04-18 19:53:48
● 2017-02-10 00:48:08
○ 2018-11-04 23:47:54
○ 2026-05-12 20:30:42

○NSdns9.hichina.com2016-04-18 → 2017-02-10 · 5 obs

○ 2015-10-30 02:09:46
● 2016-04-18 19:53:48
● 2017-02-10 00:48:08
○ 2018-11-04 23:47:54
○ 2026-05-12 20:30:42

●NSkim.ns.cloudflare.com2026-04-09 → 2026-05-12 · 3 obs

○ 2018-11-04 23:47:54
● 2026-04-09 19:47:26
● 2026-05-12 20:30:42

●NSmartin.ns.cloudflare.com2026-04-09 → 2026-05-12 · 3 obs

○ 2018-11-04 23:47:54
● 2026-04-09 19:47:26
● 2026-05-12 20:30:42

○NSns1.dns-diy.com2008-03-18 → 2008-03-18 · 3 obs

● 2008-03-18 14:27:18
○ 2015-10-30 02:09:46
○ 2026-05-12 20:30:42

○NSns2.dns-diy.com2008-03-18 → 2008-03-18 · 3 obs

● 2008-03-18 14:27:18
○ 2015-10-30 02:09:46
○ 2026-05-12 20:30:42

○NSv1s1.xundns.com2018-11-04 → 2018-11-04 · 4 obs

○ 2017-02-10 00:48:08
● 2018-11-04 23:47:54
○ 2026-04-09 19:47:26
○ 2026-05-12 20:30:42

○NSv1s2.xundns.com2018-11-04 → 2018-11-04 · 4 obs

○ 2017-02-10 00:48:08
● 2018-11-04 23:47:54
○ 2026-04-09 19:47:26
○ 2026-05-12 20:30:42

○MX221.231.135.88.51advance.com2008-03-18 → 2008-03-18 · 3 obs

● 2008-03-18 14:27:18
○ 2015-10-30 02:09:46
○ 2026-05-12 20:30:42

○MXmxn.mxhichina.com2016-04-18 → 2017-02-10 · 5 obs

○ 2015-10-30 02:09:46
● 2016-04-18 19:53:48
● 2017-02-10 00:48:08
○ 2018-11-04 23:47:54
○ 2026-05-12 20:30:42

○MXmxw.mxhichina.com2016-04-18 → 2017-02-10 · 5 obs

○ 2015-10-30 02:09:46
● 2016-04-18 19:53:48
● 2017-02-10 00:48:08
○ 2018-11-04 23:47:54
○ 2026-05-12 20:30:42

●A104.21.37.132026-04-09 → 2026-05-12 · 3 obs

○ 2018-11-04 23:47:54
● 2026-04-09 19:47:26
● 2026-05-12 20:30:42

○A139.129.37.1422016-04-18 → 2017-02-10 · 5 obs

○ 2015-10-30 02:09:46
● 2016-04-18 19:53:48
● 2017-02-10 00:48:08
○ 2018-11-04 23:47:54
○ 2026-05-12 20:30:42

●A172.67.202.1032026-04-09 → 2026-05-12 · 3 obs

○ 2018-11-04 23:47:54
● 2026-04-09 19:47:26
● 2026-05-12 20:30:42

○A221.231.138.742008-03-18 → 2008-03-18 · 3 obs

● 2008-03-18 14:27:18
○ 2015-10-30 02:09:46
○ 2026-05-12 20:30:42

●A2606:4700:3033::6815:250d2026-04-09 → 2026-05-12 · 3 obs

○ 2018-11-04 23:47:54
● 2026-04-09 19:47:26
● 2026-05-12 20:30:42

●A2606:4700:3035::ac43:ca672026-04-09 → 2026-05-12 · 3 obs

○ 2018-11-04 23:47:54
● 2026-04-09 19:47:26
● 2026-05-12 20:30:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
51advance.com	kim.ns.cloudflare.com, martin.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.87

NS records: kim.ns.cloudflare.com, martin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51advance.com (unsigned zone)

⏱️ Timing

Total: 214ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.202.103, 104.21.37.13`
AAAA	2	`2606:4700:3035::ac43:ca67, 2606:4700:3033::6815:250d`
NS	2	`kim.ns.cloudflare.com, martin.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`kim.ns.cloudflare.com dns.cloudflare.com`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

Four IP numbers are pointed to by 51advance.com: 2606:4700:3033::6815:250d, 2606:4700:3035::ac43:ca67, 104.21.37.13 and 172.67.202.103.

other host names including mail.mindruse.com, www.adslgate.net, www.eptrpomofmqtx.website, www.mauinow.com and terpuglia.it share IP numbers with 51advance.com.

Name Servers

51advance.com is delegated to two name servers kim.ns.cloudflare.com and martin.ns.cloudflare.com.

51advance.com shares the same name server setup as other domains, for instance xyssofa.com, bzhfabric.com, percar.com.br, gzkehai.com and gtlwgs.com.

51advance.com at least partially shares name servers with other domains, for instance springportalblog.com, fkpartners.com, kasta.cn, allmovieportal.net and yilugesanghua.com.

these name servers are often used together with casey.ns.cloudflare.com, alice.ns.cloudflare.com, leif.ns.cloudflare.com and walt.ns.cloudflare.com.

Host names with six IP numbers:

Host name kim.ns.cloudflare.com points to: 2606:4700:50::adf5:3a7e, 2803:f800:50::6ca2:c07e, 2a06:98c1:50::ac40:207e, 108.162.192.126, 172.64.32.126 and 173.245.58.126.

Host name martin.ns.cloudflare.com points to: 2606:4700:58::a29f:2c57, 2803:f800:50::6ca2:c357, 2a06:98c1:50::ac40:2357, 108.162.195.87, 162.159.44.87 and 172.64.35.87.

51advance.com - robtex.com

51advance.com

com

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

`51advance.com`

`com`