`srt21.com`

DNSSEC	⚠️ Not signed
A	198.49.23.144^{🇺🇸 SQUARESPACE-1198.49.23.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US} ✓ In HTTPS hints
A	198.49.23.145^{🇺🇸 SQUARESPACE-1198.49.23.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US} ✓ In HTTPS hints
A	198.185.159.144^{🇺🇸 SQUARESPACE-1198.185.159.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US} ✓ In HTTPS hints
A	198.185.159.145^{🇺🇸 SQUARESPACE-1198.185.159.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US} ✓ In HTTPS hints
NS	`nsc1.squarespacedns.com` ⭐
		A	216.239.32.108^{🇺🇸 Google216.239.32.0/24}
			PTR	`ns-cloud-c1.googledomains.com`
NS	`nsc2.squarespacedns.com`
		A	216.239.34.108^{🇺🇸 Google216.239.34.0/24}
			PTR	`ns-cloud-c2.googledomains.com`
NS	`nsc3.squarespacedns.com`
		A	216.239.36.108^{🇺🇸 Google216.239.36.0/24}
			PTR	`ns-cloud-c3.googledomains.com`
NS	`nsc4.squarespacedns.com`
		A	216.239.38.108^{🇺🇸 Google216.239.38.0/24}
			PTR	`ns-cloud-c4.googledomains.com`
MX	`smtp.google.com` ⭐
		A	2607:f8b0:4004:c1f::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pd-in-f26.1e100.net`
		A	2607:f8b0:4004:c1f::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pd-in-f27.1e100.net`
		A	2607:f8b0:4004:c21::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pe-in-f26.1e100.net`
		A	2607:f8b0:4004:c21::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pe-in-f27.1e100.net`
		A	64.233.180.26^{🇺🇸 Google64.233.180.0/24}
			PTR	`on-in-f26.1e100.net`
			PTR	`pe-in-f26.1e100.net`
		A	64.233.180.27^{🇺🇸 Google64.233.180.0/24}
			PTR	`on-in-f27.1e100.net`
			PTR	`pe-in-f27.1e100.net`
		A	142.251.163.26^{🇺🇸 Google142.251.163.0/24}
			PTR	`wv-in-f26.1e100.net`
		A	142.251.179.26^{🇺🇸 Google142.251.179.0/24}
			PTR	`pd-in-f26.1e100.net`
		A	142.251.179.27^{🇺🇸 Google142.251.179.0/24}
			PTR	`pd-in-f27.1e100.net`
TXT	`v=spf1 include:_spf.google.com ~all`
HTTPS	HTTP/2, HTTP/1.1 ✓ hints match
		IPv4 hints	198.185.159.144, 198.185.159.145, 198.49.23.144, 198.49.23.145
SOA	`nsc1.squarespacedns.com`cloud-dns-hostmaster@google.com serial=1

`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=1783988637

Previously NS for

srt21.com

postmaster.srt21.com

Same first word

srt21.com

Similar names

rts21.ru

str12.com

rts21.co.jp

21rts.com

12rts.com

DNS History

18 records (9 active, 9 former)

○NSns.cafe24.com2015-07-25 → 2017-08-25 · 4 obs

● 2015-07-25 15:17:52
● 2017-08-25 06:51:10
○ 2026-06-16 19:09:34
○ 2026-07-14 00:53:26

○NSns0.cafe24.com2015-07-25 → 2017-08-25 · 4 obs

● 2015-07-25 15:17:52
● 2017-08-25 06:51:10
○ 2026-06-16 19:09:34
○ 2026-07-14 00:53:26

○NSns1.cafe24.com2015-07-25 → 2017-08-25 · 4 obs

● 2015-07-25 15:17:52
● 2017-08-25 06:51:10
○ 2026-06-16 19:09:34
○ 2026-07-14 00:53:26

○NSns2.cafe24.com2015-07-25 → 2017-08-25 · 4 obs

● 2015-07-25 15:17:52
● 2017-08-25 06:51:10
○ 2026-06-16 19:09:34
○ 2026-07-14 00:53:26

●NSnsc1.squarespacedns.com2026-06-16 → 2026-07-14 · 3 obs

○ 2017-08-25 06:51:10
● 2026-06-16 19:09:34
● 2026-07-14 00:53:26

●NSnsc2.squarespacedns.com2026-06-16 → 2026-07-14 · 3 obs

○ 2017-08-25 06:51:10
● 2026-06-16 19:09:34
● 2026-07-14 00:53:26

●NSnsc3.squarespacedns.com2026-06-16 → 2026-07-14 · 3 obs

○ 2017-08-25 06:51:10
● 2026-06-16 19:09:34
● 2026-07-14 00:53:26

●NSnsc4.squarespacedns.com2026-06-16 → 2026-07-14 · 3 obs

○ 2017-08-25 06:51:10
● 2026-06-16 19:09:34
● 2026-07-14 00:53:26

○NSsrt21.com2015-07-25 → 2017-08-25 · 4 obs

● 2015-07-25 15:17:52
● 2017-08-25 06:51:10
○ 2026-06-16 19:09:34
○ 2026-07-14 00:53:26

○MXbackupmail-001.cafe24.com2015-07-25 → 2016-06-21 · 4 obs

● 2015-07-25 15:17:52
● 2016-06-21 09:24:08
○ 2017-02-06 00:52:16
○ 2026-07-14 00:53:26

●MXsmtp.google.com2026-06-16 → 2026-07-14 · 3 obs

○ 2017-08-25 06:51:10
● 2026-06-16 19:09:34
● 2026-07-14 00:53:26

○MXwebmail-028.cafe24.com2015-07-25 → 2017-08-25 · 4 obs

● 2015-07-25 15:17:52
● 2017-08-25 06:51:10
○ 2026-06-16 19:09:34
○ 2026-07-14 00:53:26

○A183.110.224.1942015-07-25 → 2016-06-21 · 4 obs

● 2015-07-25 15:17:52
● 2016-06-21 09:24:08
○ 2017-02-06 00:52:16
○ 2026-07-14 00:53:26

○A183.111.183.1362017-02-06 → 2017-08-25 · 5 obs

○ 2016-06-21 09:24:08
● 2017-02-06 00:52:16
● 2017-08-25 06:51:10
○ 2026-06-16 19:09:34
○ 2026-07-14 00:53:26

●A198.185.159.1442026-06-16 → 2026-07-14 · 3 obs

○ 2017-08-25 06:51:10
● 2026-06-16 19:09:34
● 2026-07-14 00:53:26

●A198.185.159.1452026-06-16 → 2026-07-14 · 3 obs

○ 2017-08-25 06:51:10
● 2026-06-16 19:09:34
● 2026-07-14 00:53:26

●A198.49.23.1442026-06-16 → 2026-07-14 · 3 obs

○ 2017-08-25 06:51:10
● 2026-06-16 19:09:34
● 2026-07-14 00:53:26

●A198.49.23.1452026-06-16 → 2026-07-14 · 3 obs

○ 2017-08-25 06:51:10
● 2026-06-16 19:09:34
● 2026-07-14 00:53:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
srt21.com	nsc1.squarespacedns.com, nsc2.squarespacedns.com, nsc3.squarespacedns.com, nsc4.squarespacedns.com	4 records

✅ Authoritative Response

Server:216.239.38.108

NS records: nsc1.squarespacedns.com, nsc2.squarespacedns.com, nsc3.squarespacedns.com, nsc4.squarespacedns.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 357ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`198.49.23.144, 198.49.23.145...`
NS	4	`nsc2.squarespacedns.com, nsc3.squarespacedns.com...`
MX	1	`smtp.google.com (pri: 1)`
TXT	1	`v=spf1 include:_spf.google.com ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2",`
SOA	1	`nsc1.squarespacedns.com cloud-dns-hostma`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (nsc1.squarespacedns.com, nsc2.squarespacedns.com, nsc3.squarespacedns.com...)

Analysis

IP Addresses

srt21.com directs to four IP numbers, which are 198.49.23.144, 198.49.23.145, 198.185.159.144 and 198.185.159.145.

Among the host names that share IP numbers with srt21.com are madpiratedesign.com, nycwellnesspsychotherapist.com, citadel21.com and two others.

Name Servers

The domain srt21.com is delegated to these four name servers: nsc1.squarespacedns.com, nsc2.squarespacedns.com, nsc3.squarespacedns.com and nsc4.squarespacedns.com.

At least some of srt21.com's name servers are shared with other domains, for example livewell.zone, iyyi.net, ozarac360businesssolution.com and two more.

nsc1.squarespacedns.com resolves to 216.239.32.108. nsc2.squarespacedns.com resolves to 216.239.34.108. nsc3.squarespacedns.com resolves to 216.239.36.108. nsc4.squarespacedns.com resolves to 216.239.38.108. All four hosts carry exactly one IP address.

Mail Servers

srt21.com routes its mail through a single mail server, smtp.google.com.

srt21.com has the same mail server arrangement as a number of other domains, for example gestoriaambiental.com, zeleniapteki.bg, foxsy.ai and two more.

srt21.com shares at least some of its mail servers with other domains — for example spiralphotography.com.au, nimble.technology, grupomaspaq.com and two more.

smtp.google.com directs to 9 IP numbers, including 64.233.180.26, 64.233.180.27 and 142.251.163.26, along with 6 other.

srt21.com - robtex.com

srt21.com

com

Previously NS for

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

Mail Servers

`srt21.com`

`com`