`51weeks.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:32ac^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:a46a^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.50.172^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.164.106^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`arnold.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b45^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arnold.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c145^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`arnold.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2145^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`arnold.ns.cloudflare.com`
		A	108.162.193.69^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arnold.ns.cloudflare.com`
		A	172.64.33.69^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arnold.ns.cloudflare.com`
		A	173.245.59.69^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arnold.ns.cloudflare.com`
NS	`sunny.ns.cloudflare.com`
		A	2606:4700:50::a29f:26a6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sunny.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2a6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sunny.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22a6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sunny.ns.cloudflare.com`
		A	108.162.194.166^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sunny.ns.cloudflare.com`
		A	162.159.38.166^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sunny.ns.cloudflare.com`
		A	172.64.34.166^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sunny.ns.cloudflare.com`
TXT	`v=spf1 include:spf.protection.outlook.com include:outmailprotect.com.im -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.50.172, 172.67.164.106
		IPv6	2606:4700:3033::6815:32ac, 2606:4700:3037::ac43:a46a
SOA	`arnold.ns.cloudflare.com`dns@cloudflare.com serial=2397740752

`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=1774620597

Same first word

51weeks.com

DNS History

14 records (6 active, 8 former)

●NSarnold.ns.cloudflare.com2026-02-17 → 2026-03-27 · 3 obs

○ 2017-03-19 20:07:58
● 2026-02-17 16:22:34
● 2026-03-27 14:16:28

○NSns57.domaincontrol.com2015-08-14 → 2017-03-19 · 4 obs

● 2015-08-14 11:32:34
● 2017-03-19 20:07:58
○ 2026-02-17 16:22:34
○ 2026-03-27 14:16:28

○NSns58.domaincontrol.com2015-08-14 → 2017-03-19 · 4 obs

● 2015-08-14 11:32:34
● 2017-03-19 20:07:58
○ 2026-02-17 16:22:34
○ 2026-03-27 14:16:28

●NSsunny.ns.cloudflare.com2026-02-17 → 2026-03-27 · 3 obs

○ 2017-03-19 20:07:58
● 2026-02-17 16:22:34
● 2026-03-27 14:16:28

○MXmailstore1.secureserver.net2015-08-14 → 2017-03-19 · 4 obs

● 2015-08-14 11:32:34
● 2017-03-19 20:07:58
○ 2026-02-17 16:22:34
○ 2026-03-27 14:16:28

○MXsmtp.secureserver.net2015-08-14 → 2017-03-19 · 4 obs

● 2015-08-14 11:32:34
● 2017-03-19 20:07:58
○ 2026-02-17 16:22:34
○ 2026-03-27 14:16:28

●A104.21.50.1722026-02-17 → 2026-03-27 · 6 obs

○ 2017-03-19 20:07:58
● 2026-02-17 16:22:34
● 2026-03-03 12:10:34
○ 2026-03-04 11:49:54
● 2026-03-04 14:21:46
● 2026-03-27 14:16:28

○A107.154.161.1882017-03-19 → 2017-03-19 · 4 obs

○ 2016-07-17 18:03:24
● 2017-03-19 20:07:58
○ 2026-02-17 16:22:34
○ 2026-03-27 14:16:28

○A107.154.168.1882017-03-19 → 2017-03-19 · 4 obs

○ 2016-07-17 18:03:24
● 2017-03-19 20:07:58
○ 2026-02-17 16:22:34
○ 2026-03-27 14:16:28

○A172.64.80.12026-03-04 → 2026-03-04 · 4 obs

○ 2026-03-03 12:10:34
● 2026-03-04 11:49:54
○ 2026-03-04 14:21:46
○ 2026-03-27 14:16:28

●A172.67.164.1062026-02-17 → 2026-03-27 · 6 obs

○ 2017-03-19 20:07:58
● 2026-02-17 16:22:34
● 2026-03-03 12:10:34
○ 2026-03-04 11:49:54
● 2026-03-04 14:21:46
● 2026-03-27 14:16:28

○A208.117.30.1092015-08-14 → 2016-07-17 · 4 obs

● 2015-08-14 11:32:34
● 2016-07-17 18:03:24
○ 2017-03-19 20:07:58
○ 2026-03-27 14:16:28

●A2606:4700:3033::6815:32ac2026-02-17 → 2026-03-27 · 3 obs

○ 2017-03-19 20:07:58
● 2026-02-17 16:22:34
● 2026-03-27 14:16:28

●A2606:4700:3037::ac43:a46a2026-02-17 → 2026-03-27 · 3 obs

○ 2017-03-19 20:07:58
● 2026-02-17 16:22:34
● 2026-03-27 14:16:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, l.gtld-servers.net, k.gtld-servers.net, h.gtld-servers.net...	-
51weeks.com	arnold.ns.cloudflare.com, sunny.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.69

NS records: arnold.ns.cloudflare.com, sunny.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 403ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.164.106, 104.21.50.172`
AAAA	2	`2606:4700:3033::6815:32ac, 2606:4700:3037::ac43:a46a`
NS	2	`arnold.ns.cloudflare.com, sunny.ns.cloudflare.com`
TXT	1	`v=spf1 include:spf.protection.outlook.co`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`arnold.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

51weeks.com points to four IP numbers: 2606:4700:3033::6815:32ac, 2606:4700:3037::ac43:a46a, 104.21.50.172 and 172.67.164.106.

For instance, other host names tyc784.com, lqasd.cyou, www.twilight-saga.ru, full.lqasd.cyou and app.getleadcrm.com share IP numbers with 51weeks.com.

Name Servers

51weeks.com is delegated to two name servers: arnold.ns.cloudflare.com and sunny.ns.cloudflare.com.

51weeks.com uses the same name server setup as other domains such as youthvoices.ca, hydraflow.com, hydraflowinc.com, fotzhobl.at and source1.no.

51weeks.com shares name servers with other domains at least partially, for example lhw-dhw.com, languagetrainersbrasil.com.br, vorplex.net, expandedpolystyreneblock.com and usenet.dev.

These name servers are commonly used with sullivan.ns.cloudflare.com.

Host names with six IP numbers: host name arnold.ns.cloudflare.com points to: 2606:4700:58::adf5:3b45, 2803:f800:50::6ca2:c145, 2a06:98c1:50::ac40:2145, 108.162.193.69, 172.64.33.69 and 173.245.59.69; host name sunny.ns.cloudflare.com points to: 2606:4700:50::a29f:26a6, 2803:f800:50::6ca2:c2a6, 2a06:98c1:50::ac40:22a6, 108.162.194.166, 162.159.38.166 and 172.64.34.166.

51weeks.com - robtex.com

51weeks.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

`51weeks.com`

`com`