`sfmathcircle.org`

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}
A	198.49.23.145^{🇺🇸 SQUARESPACE-1198.49.23.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
A	198.185.159.144^{🇺🇸 SQUARESPACE-1198.185.159.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
A	198.185.159.145^{🇺🇸 SQUARESPACE-1198.185.159.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
NS	`ns51.worldnic.com` ⭐
		A	162.159.26.165^{Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns52.worldnic.com`
		A	162.159.27.8^{Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4023:c0d::1a^{🇺🇸 Google2607:f8b0::/32}
			PTR	`dl-in-f26.1e100.net`
		A	142.250.101.27^{🇺🇸 Google142.250.101.0/24}
			PTR	`dz-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:4025:402::1a^{🇳🇱 Google2a00:1450:4025::/48}
			PTR	`rb-in-f26.1e100.net`
		A	142.250.102.27^{🇺🇸 Google142.250.102.0/24}
			PTR	`rb-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:4013:c1e::1b^{🇳🇱 Google2a00:1450:4013::/48}
			PTR	`yugrqzs-in-f27.1e100.net`
		A	192.178.213.27^{🇺🇸 Google192.178.213.0/24}
			PTR	`yugrqzs-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2607:f8b0:4023:3003::1a^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yulnkjt-in-f26.1e100.net`
		A	172.253.145.26^{🇺🇸 Google172.253.145.0/24}
			PTR	`yulnkjt-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2607:f8b0:4003:c4a::1b^{🇺🇸 Google2607:f8b0:4003::/48}
			PTR	`yutulth-in-f27.1e100.net`
		A	142.251.96.27^{🇺🇸 Google142.250.0.0/15}
			PTR	`yutulth-in-f27.1e100.net`
TXT	`google-site-verification=1GZ0fqe7Q1-RV_hhDpAM7g482osCfXUn0msKvWHmasE`
TXT	`v=spf1 include:_spf.google.com ~all`
TXT	`google-site-verification=hfJtdN_g_DaudCatSsir_Hey2syrz6BsuyGtZ6SYPCc`
SOA	`NS51.WORLDNIC.COM`namehost@WORLDNIC.COM serial=124021411

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1774574691

Same first word

sfmathcircle.org

Similar names

chrismetcalf.net

(0x6d696c66)catchers.com

DNS History

12 records (11 active, 1 former)

●NSns51.worldnic.com2015-05-13 → 2026-03-27 · 2 obs

● 2015-05-13 23:49:18
● 2026-03-27 01:50:52

●NSns52.worldnic.com2015-05-13 → 2026-03-27 · 2 obs

● 2015-05-13 23:49:18
● 2026-03-27 01:50:52

●MXalt1.aspmx.l.google.com2026-03-27 → 2026-03-27 · 2 obs

○ 2017-05-15 08:00:30
● 2026-03-27 01:50:52

●MXalt2.aspmx.l.google.com2026-03-27 → 2026-03-27 · 2 obs

○ 2017-05-15 08:00:30
● 2026-03-27 01:50:52

●MXalt3.aspmx.l.google.com2026-03-27 → 2026-03-27 · 2 obs

○ 2017-05-15 08:00:30
● 2026-03-27 01:50:52

●MXalt4.aspmx.l.google.com2026-03-27 → 2026-03-27 · 2 obs

○ 2017-05-15 08:00:30
● 2026-03-27 01:50:52

●MXaspmx.l.google.com2026-03-27 → 2026-03-27 · 2 obs

○ 2017-05-15 08:00:30
● 2026-03-27 01:50:52

○MXp.webcom.ctmail.com2015-12-18 → 2017-05-15 · 3 obs

● 2015-12-18 16:29:26
● 2017-05-15 08:00:30
○ 2026-03-27 01:50:52

●A198.185.159.1442015-05-13 → 2026-03-27 · 2 obs

● 2015-05-13 23:49:18
● 2026-03-27 01:50:52

●A198.185.159.1452015-05-13 → 2026-03-27 · 2 obs

● 2015-05-13 23:49:18
● 2026-03-27 01:50:52

●A198.49.23.1442015-05-13 → 2026-03-27 · 2 obs

● 2015-05-13 23:49:18
● 2026-03-27 01:50:52

●A198.49.23.1452015-05-13 → 2026-03-27 · 2 obs

● 2015-05-13 23:49:18
● 2026-03-27 01:50:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
sfmathcircle.org	ns51.worldnic.com, ns52.worldnic.com	-

✅ Authoritative Response

Server:162.159.27.8

NS records: ns51.worldnic.com, ns52.worldnic.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sfmathcircle.org (unsigned zone)

⏱️ Timing

Total: 2062ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`198.49.23.144, 198.185.159.144...`
NS	2	`ns51.worldnic.com, ns52.worldnic.com`
MX	5	`alt1.aspmx.l.google.com (pri: 5), alt4.aspmx.l.google.com (pri: 10)...`
TXT	3	`v=spf1 include:_spf.google.com ~all, google-site-verification=1GZ0fqe7Q1-RV_h...`
SOA	1	`NS51.WORLDNIC.COM namehost.WORLDNIC.COM`