`youdaoa.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:c1f6^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3032::6815:2c17^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.44.23^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.193.246^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`dayana.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2667^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dayana.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c267^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dayana.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2267^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dayana.ns.cloudflare.com`
		A	108.162.194.103^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dayana.ns.cloudflare.com`
		A	162.159.38.103^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dayana.ns.cloudflare.com`
		A	172.64.34.103^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dayana.ns.cloudflare.com`
NS	`sullivan.ns.cloudflare.com`
		A	2606:4700:58::a29f:2ca1^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sullivan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3a1^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sullivan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23a1^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sullivan.ns.cloudflare.com`
		A	108.162.195.161^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sullivan.ns.cloudflare.com`
		A	162.159.44.161^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sullivan.ns.cloudflare.com`
		A	172.64.35.161^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sullivan.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.44.23, 172.67.193.246
		IPv6 hints	2606:4700:3030::ac43:c1f6, 2606:4700:3032::6815:2c17
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=114, name=cloudflare-ech.com
SOA	`dayana.ns.cloudflare.com`dns@cloudflare.com serial=2409358632

`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=1784951837

⚠️ On DNS blocklist: tif

Same first word

youdaoa.cn

youdaoa.com

Similar names

youadao.com

DNS History

16 records (6 active, 10 former)

●NSdayana.ns.cloudflare.com2026-06-26 → 2026-07-25 · 3 obs

○ 2018-07-29 17:28:38
● 2026-06-26 23:33:28
● 2026-07-25 04:25:14

○NSdns21.hichina.com2018-07-29 → 2018-07-29 · 4 obs

○ 2016-07-09 13:20:40
● 2018-07-29 17:28:38
○ 2026-06-26 23:33:28
○ 2026-07-25 04:25:14

○NSdns22.hichina.com2018-07-29 → 2018-07-29 · 4 obs

○ 2016-07-09 13:20:40
● 2018-07-29 17:28:38
○ 2026-06-26 23:33:28
○ 2026-07-25 04:25:14

●NSsullivan.ns.cloudflare.com2026-06-26 → 2026-07-25 · 3 obs

○ 2018-07-29 17:28:38
● 2026-06-26 23:33:28
● 2026-07-25 04:25:14

○NSwww.youdaoa.com2015-08-04 → 2016-07-09 · 4 obs

● 2015-08-04 16:27:06
● 2016-07-09 13:20:40
○ 2018-07-29 17:28:38
○ 2026-07-25 04:25:14

○MXio.bouncemx.com2015-11-25 → 2016-07-09 · 4 obs

● 2015-11-25 03:52:14
● 2016-07-09 13:20:40
○ 2018-07-29 17:28:38
○ 2026-07-25 04:25:14

●A104.21.44.232026-06-26 → 2026-07-25 · 3 obs

○ 2018-07-29 17:28:38
● 2026-06-26 23:33:28
● 2026-07-25 04:25:14

●A172.67.193.2462026-06-26 → 2026-07-25 · 3 obs

○ 2018-07-29 17:28:38
● 2026-06-26 23:33:28
● 2026-07-25 04:25:14

●A2606:4700:3030::ac43:c1f62026-06-26 → 2026-07-25 · 3 obs

○ 2018-07-29 17:28:38
● 2026-06-26 23:33:28
● 2026-07-25 04:25:14

●A2606:4700:3032::6815:2c172026-06-26 → 2026-07-25 · 3 obs

○ 2018-07-29 17:28:38
● 2026-06-26 23:33:28
● 2026-07-25 04:25:14

○A70.39.84.2402016-03-05 → 2016-03-05 · 4 obs

○ 2015-11-25 03:52:14
● 2016-03-05 22:54:38
○ 2016-07-09 13:20:40
○ 2026-07-25 04:25:14

○A70.39.84.2432015-11-25 → 2015-11-25 · 4 obs

○ 2015-08-04 16:27:06
● 2015-11-25 03:52:14
○ 2016-03-05 22:54:38
○ 2026-07-25 04:25:14

○A70.39.84.2492016-07-09 → 2016-07-09 · 4 obs

○ 2016-03-05 22:54:38
● 2016-07-09 13:20:40
○ 2018-07-29 17:28:38
○ 2026-07-25 04:25:14

○A70.39.84.2532015-08-04 → 2015-08-04 · 3 obs

● 2015-08-04 16:27:06
○ 2018-07-29 17:28:38
○ 2026-07-25 04:25:14

○CNAMEoverdue.aliyun.com2018-07-29 → 2018-07-29 · 4 obs

○ 2016-07-09 13:20:40
● 2018-07-29 17:28:38
○ 2026-06-26 23:33:28
○ 2026-07-25 04:25:14

○CNAMEy.dcoin.co2015-08-04 → 2016-07-09 · 4 obs

● 2015-08-04 16:27:06
● 2016-07-09 13:20:40
○ 2018-07-29 17:28:38
○ 2026-07-25 04:25:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, g.gtld-servers.net, c.gtld-servers.net, k.gtld-servers.net...	-
youdaoa.com	dayana.ns.cloudflare.com, sullivan.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.161

NS records: dayana.ns.cloudflare.com, sullivan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for youdaoa.com (unsigned zone)

⏱️ Timing

Total: 434ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.193.246, 104.21.44.23`
AAAA	2	`2606:4700:3032::6815:2c17, 2606:4700:3030::ac43:c1f6`
NS	2	`dayana.ns.cloudflare.com, sullivan.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`dayana.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

youdaoa.com has four IP addresses: 104.21.44.23, 172.67.193.246, 2606:4700:3030::ac43:c1f6 and 2606:4700:3032::6815:2c17.

slotsitesuk.co.uk, redfal.org, mail.confi.me and two other host names share IP numbers with youdaoa.com.

Name Servers

youdaoa.com uses two name servers for its delegation: dayana.ns.cloudflare.com and sullivan.ns.cloudflare.com.

youdaoa.com uses the same name servers as several other domains — among them lni-usa.com, xaanmo.com, qzdez(0x787878).com and two more.

youdaoa.com shares at least some of its name servers with other domains, including dongdong.today, deereplanet.com, cg163.net and two others.

These name servers are frequently paired with the name servers dahlia.ns.cloudflare.com, arely.ns.cloudflare.com and rayden.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

Hostname dayana.ns.cloudflare.com directs to 108.162.194.103, 162.159.38.103 and 172.64.34.103 along with 3 other IP addresses.

Hostname sullivan.ns.cloudflare.com directs to 108.162.195.161, 162.159.44.161 and 172.64.35.161 along with 3 other IP addresses.

youdaoa.com - robtex.com

youdaoa.com

com

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

`youdaoa.com`

`com`