`51biyu.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:ce47^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:454a^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.69.74^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.206.71^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`guss.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3bac^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`guss.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1ac^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`guss.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21ac^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`guss.ns.cloudflare.com`
		A	108.162.193.172^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`guss.ns.cloudflare.com`
		A	172.64.33.172^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`guss.ns.cloudflare.com`
		A	173.245.59.172^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`guss.ns.cloudflare.com`
NS	`monroe.ns.cloudflare.com`
		A	2606:4700:50::a29f:2699^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`monroe.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c299^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`monroe.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2299^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`monroe.ns.cloudflare.com`
		A	108.162.194.153^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`monroe.ns.cloudflare.com`
		A	162.159.38.153^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`monroe.ns.cloudflare.com`
		A	172.64.34.153^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`monroe.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.69.74, 172.67.206.71
		IPv6 hints	2606:4700:3031::ac43:ce47, 2606:4700:3036::6815:454a
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=114, name=cloudflare-ech.com
SOA	`guss.ns.cloudflare.com`dns@cloudflare.com serial=2397128791

`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=1776285002

Same first word

51biyu.com

DNS History

17 records (6 active, 11 former)

●NSguss.ns.cloudflare.com2026-04-15 → 2026-04-15 · 2 obs

○ 2020-02-21 09:43:16
● 2026-04-15 20:34:50

●NSmonroe.ns.cloudflare.com2026-04-15 → 2026-04-15 · 2 obs

○ 2020-02-21 09:43:16
● 2026-04-15 20:34:50

○NSns1.ezdnscenter.com2015-08-20 → 2020-02-21 · 3 obs

● 2015-08-20 13:52:42
● 2020-02-21 09:43:16
○ 2026-04-15 20:34:50

○NSns2.ezdnscenter.com2015-08-20 → 2020-02-21 · 3 obs

● 2015-08-20 13:52:42
● 2020-02-21 09:43:16
○ 2026-04-15 20:34:50

○NSns3.ezdnscenter.com2015-08-20 → 2020-02-21 · 3 obs

● 2015-08-20 13:52:42
● 2020-02-21 09:43:16
○ 2026-04-15 20:34:50

○NSns4.ezdnscenter.com2015-08-20 → 2020-02-21 · 3 obs

● 2015-08-20 13:52:42
● 2020-02-21 09:43:16
○ 2026-04-15 20:34:50

○NSns5.ezdnscenter.com2015-08-20 → 2020-02-21 · 3 obs

● 2015-08-20 13:52:42
● 2020-02-21 09:43:16
○ 2026-04-15 20:34:50

○NSns6.ezdnscenter.com2015-08-20 → 2020-02-21 · 3 obs

● 2015-08-20 13:52:42
● 2020-02-21 09:43:16
○ 2026-04-15 20:34:50

●A104.21.69.742026-04-15 → 2026-04-15 · 2 obs

○ 2020-02-21 09:43:16
● 2026-04-15 20:34:50

●A172.67.206.712026-04-15 → 2026-04-15 · 2 obs

○ 2020-02-21 09:43:16
● 2026-04-15 20:34:50

○A188.114.96.02026-04-15 → 2026-04-15 · 1 obs

○ 2026-04-15 20:34:50

○A188.114.97.02026-04-15 → 2026-04-15 · 1 obs

○ 2026-04-15 20:34:50

●A2606:4700:3031::ac43:ce472026-04-15 → 2026-04-15 · 2 obs

○ 2020-02-21 09:43:16
● 2026-04-15 20:34:50

●A2606:4700:3036::6815:454a2026-04-15 → 2026-04-15 · 2 obs

○ 2020-02-21 09:43:16
● 2026-04-15 20:34:50

○A2a06:98c1:3120::2026-04-15 → 2026-04-15 · 1 obs

○ 2026-04-15 20:34:50

○A2a06:98c1:3121::2026-04-15 → 2026-04-15 · 1 obs

○ 2026-04-15 20:34:50

○A42.96.136.1182015-08-20 → 2020-02-21 · 3 obs

● 2015-08-20 13:52:42
● 2020-02-21 09:43:16
○ 2026-04-15 20:34:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
51biyu.com	guss.ns.cloudflare.com, monroe.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.153

NS records: guss.ns.cloudflare.com, monroe.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 85ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.206.71, 104.21.69.74`
AAAA	2	`2606:4700:3031::ac43:ce47, 2606:4700:3036::6815:454a`
NS	2	`guss.ns.cloudflare.com, monroe.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`guss.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

51biyu.com maps to four IP numbers: 2606:4700:3031::ac43:ce47, 2606:4700:3036::6815:454a, 104.21.69.74 and 172.67.206.71.

Other host names, for instance gold-production.ru, moaa.live, businesshubone.com, www.theapparelagency.com and zhylch.com share IP numbers with 51biyu.com.

Name Servers

Two name servers guss.ns.cloudflare.com and monroe.ns.cloudflare.com handle delegation for 51biyu.com.

51biyu.com uses the same name server setup as other domains, for example xxynp.com, dhmfund.com, sowaibao.com, new1319.com and jhyjnj.com.

51biyu.com partially shares name servers with other domains; examples include neosys.net, spanishties.com, 463600.net, efkonia-consulting.com and parkpressprinters.com.

These name servers are commonly used with emerie.ns.cloudflare.com, rodrigo.ns.cloudflare.com and chad.ns.cloudflare.com.

Host names with six IP numbers: guss.ns.cloudflare.com points to: 2606:4700:58::adf5:3bac, 2803:f800:50::6ca2:c1ac, 2a06:98c1:50::ac40:21ac, 108.162.193.172, 172.64.33.172 and 173.245.59.172; monroe.ns.cloudflare.com points to: 2606:4700:50::a29f:2699, 2803:f800:50::6ca2:c299, 2a06:98c1:50::ac40:2299, 108.162.194.153, 162.159.38.153 and 172.64.34.153.

51biyu.com - robtex.com

51biyu.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

`51biyu.com`

`com`