b4uo.com - dns.ninja

`b4uo.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:58f5^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:9a7f^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.88.245^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.154.127^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`doug.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b9f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`doug.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c19f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`doug.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:219f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`doug.ns.cloudflare.com`
		A	108.162.193.159^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`doug.ns.cloudflare.com`
		A	172.64.33.159^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`doug.ns.cloudflare.com`
		A	173.245.59.159^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`doug.ns.cloudflare.com`
NS	`zelda.ns.cloudflare.com`
		A	2606:4700:50::adf5:3af2^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zelda.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0f2^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`zelda.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20f2^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`zelda.ns.cloudflare.com`
		A	108.162.192.242^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zelda.ns.cloudflare.com`
		A	172.64.32.242^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zelda.ns.cloudflare.com`
		A	173.245.58.242^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zelda.ns.cloudflare.com`
TXT	`google-site-verification=QVO8nfZuU9hV5-O-ecJV8zzet42I4wFQCJJAJHevzfA`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.88.245, 172.67.154.127
		IPv6 hints	2606:4700:3030::6815:58f5, 2606:4700:3037::ac43:9a7f
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=112, name=cloudflare-ech.com
SOA	`doug.ns.cloudflare.com`dns@cloudflare.com serial=2409168332

`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=1783711697

Same first word

b4uo.com

Similar names

ob4u.net

oub4.df.gov.br

ubo4.com

buo4.cn

ob4u.de

ob4u.com

bou4.com

bo4u.com

bo4u.de

DNS History

11 records (6 active, 5 former)

●NSdoug.ns.cloudflare.com2026-02-18 → 2026-07-10 · 3 obs

○ 2017-05-19 20:43:32
● 2026-02-18 23:38:46
● 2026-07-10 19:34:34

○NSns17.domaincontrol.com2015-06-08 → 2017-05-19 · 4 obs

● 2015-06-08 17:38:16
● 2017-05-19 20:43:32
○ 2026-02-18 23:38:46
○ 2026-07-10 19:34:34

○NSns18.domaincontrol.com2015-06-08 → 2017-05-19 · 4 obs

● 2015-06-08 17:38:16
● 2017-05-19 20:43:32
○ 2026-02-18 23:38:46
○ 2026-07-10 19:34:34

●NSzelda.ns.cloudflare.com2026-02-18 → 2026-07-10 · 3 obs

○ 2017-05-19 20:43:32
● 2026-02-18 23:38:46
● 2026-07-10 19:34:34

○MXmailstore1.secureserver.net2015-06-08 → 2017-05-19 · 4 obs

● 2015-06-08 17:38:16
● 2017-05-19 20:43:32
○ 2026-02-18 23:38:46
○ 2026-07-10 19:34:34

○MXsmtp.secureserver.net2015-06-08 → 2017-05-19 · 4 obs

● 2015-06-08 17:38:16
● 2017-05-19 20:43:32
○ 2026-02-18 23:38:46
○ 2026-07-10 19:34:34

●A104.21.88.2452026-02-18 → 2026-07-10 · 3 obs

○ 2017-05-19 20:43:32
● 2026-02-18 23:38:46
● 2026-07-10 19:34:34

●A172.67.154.1272026-02-18 → 2026-07-10 · 3 obs

○ 2017-05-19 20:43:32
● 2026-02-18 23:38:46
● 2026-07-10 19:34:34

●A2606:4700:3030::6815:58f52026-02-18 → 2026-07-10 · 3 obs

○ 2017-05-19 20:43:32
● 2026-02-18 23:38:46
● 2026-07-10 19:34:34

●A2606:4700:3037::ac43:9a7f2026-02-18 → 2026-07-10 · 3 obs

○ 2017-05-19 20:43:32
● 2026-02-18 23:38:46
● 2026-07-10 19:34:34

○A97.74.144.972015-06-08 → 2017-05-19 · 4 obs

● 2015-06-08 17:38:16
● 2017-05-19 20:43:32
○ 2026-02-18 23:38:46
○ 2026-07-10 19:34:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
b4uo.com	doug.ns.cloudflare.com, zelda.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.159

NS records: doug.ns.cloudflare.com, zelda.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 129ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.88.245, 172.67.154.127`
AAAA	2	`2606:4700:3037::ac43:9a7f, 2606:4700:3030::6815:58f5`
NS	2	`doug.ns.cloudflare.com, zelda.ns.cloudflare.com`
TXT	1	`google-site-verification=QVO8nfZuU9hV5-O`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`doug.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

b4uo.com has four IP addresses: 104.21.88.245, 172.67.154.127, 2606:4700:3030::6815:58f5 and 2606:4700:3037::ac43:9a7f.

Among the host names that share IP numbers with b4uo.com are tjhoocqyksmsm.site, hlug.cn, yizhihongxing.com and two others.

Name Servers

b4uo.com uses two name servers for its delegation: doug.ns.cloudflare.com and zelda.ns.cloudflare.com.

b4uo.com has the same name server delegation as a number of other domains, such as saintjohncapital.com, b2b-club.co.uk, asuperiorcallcenter.com and two more.

b4uo.com shares at least some of its name servers with other domains, including allsafefencing.com.au, optimizely.com, eas.asia and two others.

These name servers are frequently paired with the name servers chan.ns.cloudflare.com, arvind.ns.cloudflare.com and sofia.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

Hostname doug.ns.cloudflare.com directs to 108.162.193.159, 172.64.33.159 and 173.245.59.159 along with 3 other IP addresses.

Hostname zelda.ns.cloudflare.com directs to 108.162.192.242, 172.64.32.242 and 173.245.58.242 along with 3 other IP addresses.