51ybg.com - robtex.com

51ybg.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:ad68🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::6815:480a🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.72.10Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.173.104🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSmeadow.ns.cloudflare.com ⭐
A2606:4700:50::a29f:2633🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmeadow.ns.cloudflare.com
A2803:f800:50::6ca2:c233🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRmeadow.ns.cloudflare.com
A2a06:98c1:50::ac40:2233🇺🇸 Cloudflare2a06:98c1:50::/45
PTRmeadow.ns.cloudflare.com
A108.162.194.51🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmeadow.ns.cloudflare.com
A162.159.38.51Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmeadow.ns.cloudflare.com
A172.64.34.51🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmeadow.ns.cloudflare.com
NSsergi.ns.cloudflare.com
A2606:4700:58::a29f:2c44🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsergi.ns.cloudflare.com
A2803:f800:50::6ca2:c344🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRsergi.ns.cloudflare.com
A2a06:98c1:50::ac40:2344🇺🇸 Cloudflare2a06:98c1:50::/45
PTRsergi.ns.cloudflare.com
A108.162.195.68🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsergi.ns.cloudflare.com
A162.159.44.68Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsergi.ns.cloudflare.com
A172.64.35.68🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsergi.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.72.10, 172.67.173.104
IPv6 hints2606:4700:3030::ac43:ad68, 2606:4700:3032::6815:480a
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=85, name=cloudflare-ech.com
SOAmeadow.ns.cloudflare.comdns@cloudflare.com serial=2409878361

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1785220697

Same first word

51ybg.com
51ybg.cn

Similar names

51ygb.com
51gyb.com
51byg.com

DNS History

13 records (6 active, 7 former)

2017201820192020202120222023202420252026NSmeadow.ns.cloudflare.comsergi.ns.cloudflare.comdns10.hichina.comdns9.hichina.comMXmxbiz1.qq.commxbiz2.qq.comA104.21.72.10172.67.173.1042606:4700:3030::ac43:ad682606:4700:3032::6815:480a106.15.92.240121.43.231.382606:4700:3033::ac43:ad68
○NSdns10.hichina.com2017-10-08 → 2017-10-08 · 4 obs
○ 2016-12-21 01:23:50
● 2017-10-08 06:34:34
○ 2026-05-05 07:07:20
○ 2026-07-28 07:05:14
○NSdns9.hichina.com2016-12-21 → 2017-10-08 · 4 obs
● 2016-12-21 01:23:50
● 2017-10-08 06:34:34
○ 2026-05-05 07:07:20
○ 2026-07-28 07:05:14
●NSmeadow.ns.cloudflare.com2026-05-05 → 2026-07-28 · 3 obs
○ 2017-10-08 06:34:34
● 2026-05-05 07:07:20
● 2026-07-28 07:05:14
●NSsergi.ns.cloudflare.com2026-05-05 → 2026-07-28 · 3 obs
○ 2017-10-08 06:34:34
● 2026-05-05 07:07:20
● 2026-07-28 07:05:14
○MXmxbiz1.qq.com2016-12-21 → 2017-10-08 · 4 obs
● 2016-12-21 01:23:50
● 2017-10-08 06:34:34
○ 2026-05-05 07:07:20
○ 2026-07-28 07:05:14
○MXmxbiz2.qq.com2016-12-21 → 2017-10-08 · 4 obs
● 2016-12-21 01:23:50
● 2017-10-08 06:34:34
○ 2026-05-05 07:07:20
○ 2026-07-28 07:05:14
●A104.21.72.102026-05-05 → 2026-07-28 · 3 obs
○ 2017-10-08 06:34:34
● 2026-05-05 07:07:20
● 2026-07-28 07:05:14
○A106.15.92.2402017-10-08 → 2017-10-08 · 4 obs
○ 2016-12-21 01:23:50
● 2017-10-08 06:34:34
○ 2026-05-05 07:07:20
○ 2026-07-28 07:05:14
○A121.43.231.382016-12-21 → 2016-12-21 · 3 obs
● 2016-12-21 01:23:50
○ 2017-10-08 06:34:34
○ 2026-07-28 07:05:14
●A172.67.173.1042026-05-05 → 2026-07-28 · 3 obs
○ 2017-10-08 06:34:34
● 2026-05-05 07:07:20
● 2026-07-28 07:05:14
●A2606:4700:3030::ac43:ad682026-07-28 → 2026-07-28 · 2 obs
○ 2026-05-05 07:07:20
● 2026-07-28 07:05:14
●A2606:4700:3032::6815:480a2026-05-05 → 2026-07-28 · 3 obs
○ 2017-10-08 06:34:34
● 2026-05-05 07:07:20
● 2026-07-28 07:05:14
○A2606:4700:3033::ac43:ad682026-05-05 → 2026-05-05 · 3 obs
○ 2017-10-08 06:34:34
● 2026-05-05 07:07:20
○ 2026-07-28 07:05:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comd.gtld-servers.net, e.gtld-servers.net, k.gtld-servers.net, c.gtld-servers.net...-
51ybg.commeadow.ns.cloudflare.com, sergi.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.51

NS records: meadow.ns.cloudflare.com, sergi.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 170ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.72.10, 172.67.173.104
AAAA22606:4700:3030::ac43:ad68, 2606:4700:3032::6815:480a
NS2meadow.ns.cloudflare.com, sergi.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1meadow.ns.cloudflare.com dns.cloudflare.

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

51ybg.com directs to four IP numbers, which are 104.21.72.10, 172.67.173.104, 2606:4700:3030::ac43:ad68 and 2606:4700:3032::6815:480a.

panfloridachallenge.org, knallebo.se, www.summersonic.net plus two other host names have IP numbers in common with 51ybg.com.

Name Servers

The NS records for 51ybg.com delegate to meadow.ns.cloudflare.com and sergi.ns.cloudflare.com.

The name server configuration of 51ybg.com is shared with other domains, for instance 315xf.com, m5yu.com, plantstimes.com and two others.

There is at least partial name server overlap between 51ybg.com and other domains — ndgambler.net, cargjllltd.com, meituan-tuanjieshe.com and two more among them.

These name servers tend to appear in combination with the name servers abby.ns.cloudflare.com, paityn.ns.cloudflare.com, arvind.ns.cloudflare.com and olga.ns.cloudflare.com.

Hosts with 6 IP addresses each:

meadow.ns.cloudflare.com maps to 108.162.194.51, 162.159.38.51, 172.64.34.51 and 3 additional IP addresses.

sergi.ns.cloudflare.com maps to 108.162.195.68, 162.159.44.68, 172.64.35.68 and 3 additional IP addresses.