`saylordouble.com`

DNSSEC	⚠️ Not signed
A	104.21.4.163^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.132.65^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`rose.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a8d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rose.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c08d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rose.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:208d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rose.ns.cloudflare.com`
		A	108.162.192.141^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rose.ns.cloudflare.com`
		A	172.64.32.141^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rose.ns.cloudflare.com`
		A	173.245.58.141^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rose.ns.cloudflare.com`
NS	`sergi.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c44^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sergi.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c344^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sergi.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2344^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sergi.ns.cloudflare.com`
		A	108.162.195.68^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sergi.ns.cloudflare.com`
		A	162.159.44.68^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sergi.ns.cloudflare.com`
		A	172.64.35.68^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sergi.ns.cloudflare.com`
TXT	`google-site-verification=qkjCjATr1mdFoxKJcOiUdKTyLRRv7hFI2gPd3hZlTuI`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.4.163, 172.67.132.65
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=68, name=cloudflare-ech.com
SOA	`rose.ns.cloudflare.com`dns@cloudflare.com serial=2410058978

`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=1784960822

⚠️ On DNS blocklist: tif

Same first word

saylordouble.com

DNS History

4 records (4 active, 0 former)

●NSrose.ns.cloudflare.com2026-03-20 → 2026-07-25 · 2 obs

● 2026-03-20 10:49:36
● 2026-07-25 06:46:30

●NSsergi.ns.cloudflare.com2026-03-20 → 2026-07-25 · 2 obs

● 2026-03-20 10:49:36
● 2026-07-25 06:46:30

●A104.21.4.1632026-03-20 → 2026-07-25 · 2 obs

● 2026-03-20 10:49:36
● 2026-07-25 06:46:30

●A172.67.132.652026-03-20 → 2026-07-25 · 2 obs

● 2026-03-20 10:49:36
● 2026-07-25 06:46:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, g.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net...	-
saylordouble.com	rose.ns.cloudflare.com, sergi.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.68

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for saylordouble.com (unsigned zone)

⏱️ Timing

Total: 312ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.132.65, 104.21.4.163`
NS	2	`rose.ns.cloudflare.com, sergi.ns.cloudflare.com`
TXT	1	`google-site-verification=qkjCjATr1mdFoxK`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`rose.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

saylordouble.com points to the IP addresses 104.21.4.163 and 172.67.132.65

Two other host names, along with massyn.net, 2kz1q87.doedap101.shop and h563.cn, also share IP numbers with saylordouble.com.

Name Servers

saylordouble.com is delegated to two name servers: rose.ns.cloudflare.com and sergi.ns.cloudflare.com.

saylordouble.com shares its NS records with other domains, for example ojd.ma, maroc1xbet.net, kingdinasti.vip and two others.

There is at least partial name server overlap between saylordouble.com and other domains — mingdns.wang, onegearonedream.net, lorealconnect.com and two more among them.

The name servers steven.ns.cloudflare.com, paityn.ns.cloudflare.com and abby.ns.cloudflare.com are often found in combination with these name servers.

DNS names with 6 IP addresses:

rose.ns.cloudflare.com resolves to 108.162.192.141, 172.64.32.141, 173.245.58.141 and 3 other IP addresses.

sergi.ns.cloudflare.com resolves to 108.162.195.68, 162.159.44.68, 172.64.35.68 and 3 other IP addresses.

saylordouble.com - robtex.com