`sfcenter.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:d78a^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::6815:10ba^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.16.186^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.215.138^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`rory.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2ca6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rory.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3a6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rory.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23a6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rory.ns.cloudflare.com`
		A	108.162.195.166^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rory.ns.cloudflare.com`
		A	162.159.44.166^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rory.ns.cloudflare.com`
		A	172.64.35.166^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rory.ns.cloudflare.com`
NS	`vita.ns.cloudflare.com`
		A	2606:4700:50::adf5:3aee^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vita.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0ee^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`vita.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20ee^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`vita.ns.cloudflare.com`
		A	108.162.192.238^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vita.ns.cloudflare.com`
		A	172.64.32.238^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vita.ns.cloudflare.com`
		A	173.245.58.238^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vita.ns.cloudflare.com`
MX	`sfcenter-org.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c936::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-cy1pr05cu00400.inbound.protection.outlook.com`
		A	2a01:111:f403:f804::3^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-co1pr03cu00403.inbound.protection.outlook.com`
		A	2a01:111:f403:f90b::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn6pr04cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:f913::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-cy5pr05cu00101.inbound.protection.outlook.com`
		A	40.93.192.4^{🇺🇸 Microsoft40.80.0.0/12}
			PTR	`mail-dm2pr04cu00404.inbound.protection.outlook.com`
		A	52.101.40.1^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-cy4pr03cu00101.inbound.protection.outlook.com`
		A	52.101.41.22^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj2pr05cu00406.inbound.protection.outlook.com`
		A	52.101.42.16^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-co1pr05cu00300.inbound.protection.outlook.com`
TXT	`pardot528812=33563e48f9f1cd9f438703a8e9393e9313b40c39c4f3980d42c68a7f9a4da510...`
TXT	`pardot528812=c40c220e7057bf9c5f9a8240190ac7a1bd59f9a2a75beb071d867655fbf760a8`
TXT	`v=spf1 include:spf.protection.outlook.com include:aspmx.pardot.com include:_s...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.16.186, 172.67.215.138
		IPv6 hints	2606:4700:3030::ac43:d78a, 2606:4700:3031::6815:10ba
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=151, name=cloudflare-ech.com
SOA	`rory.ns.cloudflare.com`dns@cloudflare.com serial=2399411505

`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=1776231276

rank #415857 globally
rank #31026 in the tld
WOT: SAFE (71/100)
📈 Tranco rank: #333,352

Subdomains

mail.sfcenter.org

Same first word

sfcenter.ru

sfcenter.org

sfcenter.net

Similar names

centersf.com

fencrest.com

fscenter.com

DNS History

14 records (7 active, 7 former)

○NSns41.domaincontrol.com2015-08-26 → 2016-11-04 · 4 obs

● 2015-08-26 01:11:10
● 2016-11-04 04:44:18
○ 2026-04-15 06:01:52
○ 2026-04-15 06:01:54

○NSns42.domaincontrol.com2015-08-26 → 2016-11-04 · 4 obs

● 2015-08-26 01:11:10
● 2016-11-04 04:44:18
○ 2026-04-15 06:01:52
○ 2026-04-15 06:01:54

●NSrory.ns.cloudflare.com2026-04-15 → 2026-04-15 · 3 obs

○ 2016-11-04 04:44:18
● 2026-04-15 06:01:52
● 2026-04-15 06:01:54

●NSvita.ns.cloudflare.com2026-04-15 → 2026-04-15 · 3 obs

○ 2016-11-04 04:44:18
● 2026-04-15 06:01:52
● 2026-04-15 06:01:54

●MXsfcenter-org.mail.protection.outlook.com2015-08-26 → 2026-04-15 · 2 obs

● 2015-08-26 01:11:10
● 2026-04-15 06:01:54

●A104.21.16.1862026-04-15 → 2026-04-15 · 3 obs

○ 2016-11-04 04:44:18
● 2026-04-15 06:01:52
● 2026-04-15 06:01:54

●A172.67.215.1382026-04-15 → 2026-04-15 · 3 obs

○ 2016-11-04 04:44:18
● 2026-04-15 06:01:52
● 2026-04-15 06:01:54

○A188.114.96.02026-04-15 → 2026-04-15 · 2 obs

○ 2026-04-15 06:01:52
○ 2026-04-15 06:01:54

○A188.114.97.02026-04-15 → 2026-04-15 · 2 obs

○ 2026-04-15 06:01:52
○ 2026-04-15 06:01:54

●A2606:4700:3030::ac43:d78a2026-04-15 → 2026-04-15 · 3 obs

○ 2016-11-04 04:44:18
● 2026-04-15 06:01:52
● 2026-04-15 06:01:54

●A2606:4700:3031::6815:10ba2026-04-15 → 2026-04-15 · 3 obs

○ 2016-11-04 04:44:18
● 2026-04-15 06:01:52
● 2026-04-15 06:01:54

○A2a06:98c1:3120::2026-04-15 → 2026-04-15 · 2 obs

○ 2026-04-15 06:01:52
○ 2026-04-15 06:01:54

○A2a06:98c1:3121::2026-04-15 → 2026-04-15 · 2 obs

○ 2026-04-15 06:01:52
○ 2026-04-15 06:01:54

○A54.210.54.1812015-08-26 → 2016-11-04 · 4 obs

● 2015-08-26 01:11:10
● 2016-11-04 04:44:18
○ 2026-04-15 06:01:52
○ 2026-04-15 06:01:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org	-
sfcenter.org	vita.ns.cloudflare.com, rory.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.35.166

NS records: vita.ns.cloudflare.com, rory.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sfcenter.org (unsigned zone)

⏱️ Timing

Total: 509ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.215.138, 104.21.16.186`
AAAA	2	`2606:4700:3030::ac43:d78a, 2606:4700:3031::6815:10ba`
NS	2	`rory.ns.cloudflare.com, vita.ns.cloudflare.com`
MX	1	`sfcenter-org.mail.protection.outlook.com`
TXT	3	`pardot528812=33563e48f9f1cd9f438703a8e93, pardot528812=c40c220e7057bf9c5f9a8240190...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`rory.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

sfcenter.org is parent of mail.sfcenter.org.

IP Addresses

sfcenter.org points to four IP numbers: 2606:4700:3030::ac43:d78a, 2606:4700:3031::6815:10ba, 104.21.16.186 and 172.67.215.138.

Other host names, for instance trenieroutdoors.com, blocksmurfer.io, jjfast.com, mail.727area.com and penuriesdemedicamentscanada.ca share IP numbers with sfcenter.org.

Name Servers

sfcenter.org's delegation is to two name servers rory.ns.cloudflare.com and vita.ns.cloudflare.com.

sfcenter.org shares the same name server configuration as other domains, such as 35.29.134.209.in-addr.arpa, 232.29.134.209.in-addr.arpa, hubtube.net, 138.29.134.209.in-addr.arpa and 80.29.134.209.in-addr.arpa.

sfcenter.org at least partially shares its name servers with other domains, for instance netglide.de, actionmediasolutions.com, viontelarqos.com, fupiwk.com and pl-kategoria-inne4662.shop.

These name servers are often used together with the name servers kate.ns.cloudflare.com.

Host names with six IP numbers:

rory.ns.cloudflare.com points to: 2606:4700:58::a29f:2ca6, 2803:f800:50::6ca2:c3a6, 2a06:98c1:50::ac40:23a6, 108.162.195.166, 162.159.44.166 and 172.64.35.166.

vita.ns.cloudflare.com points to: 2606:4700:50::adf5:3aee, 2803:f800:50::6ca2:c0ee, 2a06:98c1:50::ac40:20ee, 108.162.192.238, 172.64.32.238 and 173.245.58.238.

Mail Servers

sfcenter.org is served by a single mail server, sfcenter-org.mail.protection.outlook.com.

The host name sfcenter-org.mail.protection.outlook.com resolves to eight IP numbers: 2a01:111:f403:c936::, 2a01:111:f403:f804::3, 2a01:111:f403:f90b::, 2a01:111:f403:f913::1, 40.93.192.4, 52.101.40.1, 52.101.41.22 and 52.101.42.16.

sfcenter.org - robtex.com

sfcenter.org

org

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`sfcenter.org`

`org`