`sf.edu`

DNSSEC	⚠️ Not signed
A	141.193.213.20^{🇺🇸 CLOUDFLARESPECTRUM141.193.213.0/24 WPEngine, Inc. 504 Lavaca Street, 1000, Austin, TX 78701, US}
		PTR	`ip-141-193-213-20.defastlink.net`
A	141.193.213.21^{🇺🇸 CLOUDFLARESPECTRUM141.193.213.0/24 WPEngine, Inc. 504 Lavaca Street, 1000, Austin, TX 78701, US}
NS	`ns1-04.azure-dns.com` ⭐
		A	2603:1061:0:700::4^{🇺🇸 Microsoft2603:1000::/25 MICROSOFT}
			PTR	`ns1-04.azure-dns.com`
		A	13.107.236.4^{🇺🇸 Microsoft13.104.0.0/14 MICROSOFT}
			PTR	`ns1-04.azure-dns.com`
NS	`ns2-04.azure-dns.net`
		A	2620:1ec:8ec:700::4^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns2-04.azure-dns.net`
		A	150.171.21.4^{🇺🇸 Microsoft150.171.0.0/16 MICROSOFT}
			PTR	`ns2-04.azure-dns.net`
NS	`ns3-04.azure-dns.org`
		A	2a01:111:4000:700::4^{🇬🇧 Microsoft2a01:111:4000::/36}
			PTR	`ns3-04.azure-dns.org`
		A	204.14.183.4^{🇺🇸 Microsoft204.14.180.0/22}
			PTR	`ns3-04.azure-dns.org`
NS	`ns4-04.azure-dns.info`
		A	2620:1ec:bda:700::4^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns4-04.azure-dns.info`
		A	208.84.5.4^{🇺🇸 Microsoft208.84.0.0/21 MICROSOFT}
			PTR	`ns4-04.azure-dns.info`
MX	`sf-edu.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c902::16^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-byapr04cu00306.inbound.protection.outlook.com`
		A	2a01:111:f403:c91d::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-mw2pr04cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:f908::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn1pr04cu00101.inbound.protection.outlook.com`
		A	2a01:111:f403:f90d::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sn1pr0501cu00301.inbound.protection.outlook.com`
		A	52.101.9.5^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-mn2pr04cu00205.inbound.protection.outlook.com`
		A	52.101.10.1^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bn6pr02cu00301.inbound.protection.outlook.com`
		A	52.101.11.13^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sn1pr0501cu00205.inbound.protection.outlook.com`
		A	52.101.50.1^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-co1pr05cu00401.inbound.protection.outlook.com`
TXT	`MS=ms53628929`
TXT	`v=spf1 include:spf.protection.outlook.com include:mktomail.com include:mail.z...`
TXT	`adobe-idp-site-verification=cfe933ef9fd9ab1bf75c880f964de9ec2a87507eb222d4fe2...`
TXT	`SFMC-ITOW-js3vL_9JktTank0IKIwrcHEVfU_nf0EbN2E`
TXT	`have-i-been-pwned-verification=8b69965974ff34261480c3ba4aadbcc4`
TXT	`google-site-verification=-3mQqV3bZpSsoTuRCrlHWimUruQvjmWSs5TNeZqmNCI`
TXT	`fg466pd72mz95mgs077d8ch2ybr836xl`
TXT	`yxh9k6g7sm6rsbz2gksr2jmlmm8j4jrl`
TXT	`google-site-verification=g7E72f3Bj2cPSi7KrY8wOuApGbeCc4VDGemyoVFHvB4`
SOA	`ns1-04.azure-dns.com`azuredns-hostmaster@microsoft.com serial=1

`edu`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.edu-servers.net` ⭐
	NS	`b.edu-servers.net`
	NS	`c.edu-servers.net`
	NS	`d.edu-servers.net`
	NS	`e.edu-servers.net`
	NS	`f.edu-servers.net`
	NS	`g.edu-servers.net`
	NS	`h.edu-servers.net`
	NS	`i.edu-servers.net`
	NS	`j.edu-servers.net`
	NS	`k.edu-servers.net`
	NS	`l.edu-servers.net`
	NS	`m.edu-servers.net`
	SOA	`a.edu-servers.net`nstld@verisign-grs.com serial=1771608165

rank #279048 globally
rank #2318 in the tld
WOT: SAFE (87/100)
📈 Tranco rank: #655,155

Subdomains

www.sf.edu

henry.sf.edu

cougars.sf.edu

service.sf.edu

go.sf.edu

admissions.sf.edu

my.sf.edu

Same first word

sf.kz

sf.cz

sf.sd

sf.guru

sf.biz

sf.cm

sf.fyi

sf.my

sf.cn

sf.org.ua

sf.sh

sf.in.th

sf.house

sf.tax

sf.media

sf.tours

sf.ws

sf.lt

sf.gr

sf.com.tw

sf.pe

sf.lv

sf.sk

sf.ac.th

sf.net

sf.cool

sf.gov.cn

sf.dating

sf.edu

sf.io

sf.com.co

sf.is

sf.com.my

sf.no

sf.ph

sf.net.nz

sf.cl

sf.church

sf.legal

sf.com.tr

sf.ddns.net

sf.bike

sf.fi

sf.ru

sf.lc

sf.dojin.com

sf.dog

sf.gl

sf.co

sf.co.at

sf.gg

sf.express

sf.am

sf.guide

sf.run

sf.org

sf.de

sf.ltd

sf.deals

sf.gov

sf.global

sf.ee

sf.dk

sf.education

sf.org.nz

sf.zone

sf.finance

sf.se

sf.com.br

sf.idv.tw

sf.k12.pa.us

sf.ag

sf.hu

sf.community

sf.cc

sf.email

sf.je

sf.vg

sf.sa

sf.tj

sf.com.hk

sf.gov.kg

sf.org.pk

sf.kg

sf.com.au

sf.org.au

sf.cpa

sf.tv

sf.com.ua

sf.gs

sf.ca.us

sf.com

sf.ac

Similar names

fs.digital

fs.ca

fs.hn.cn

fs.blog

fs.net.br

fs.agric.za

fs.dk

fs.io

fs.capital

fs.com.pk

fs.business

fs.tj

fs.ro

fs.network

fs.no

fs.tc

fs.wtf

fs.sk

fs.gs

fs.com

fs.de

fs.kyiv.ua

fs.or.kr

fs.am

fs.lv

fs.me

fs.com.au

fs.eti.br

fs.net.nz

fs.to

fs.tel

fs.lc

fs.net

fs.org.ua

fs.com.br

fs.qa

fs.by

fs.com.hn

fs.ai

fs.com.uy

fs.is

fs.life

fs.gov.cy

fs.tl

fs.school.za

fs.ru

fs.srv.br

fs.at

fs.com.gt

fs.investments

fs.org

fs.church

fs.money

fs.fi

fs.or.at

fs.mk

fs.gy

fs.com.my

fs.uz

DNS History

17 records (7 active, 10 former)

○NSadams.ind.net2015-08-18 → 2017-09-24 · 4 obs

● 2015-08-18 07:22:08
● 2017-09-24 18:34:40
○ 2021-02-01 15:57:26
○ 2026-03-01 14:14:20

○NSinfoblox_jp2.sf.edu2015-08-18 → 2017-09-24 · 4 obs

● 2015-08-18 07:22:08
● 2017-09-24 18:34:40
○ 2021-02-01 15:57:26
○ 2026-03-01 14:14:20

○NSmichael2015-08-18 → 2017-09-24 · 4 obs

● 2015-08-18 07:22:08
● 2017-09-24 18:34:40
○ 2021-02-01 15:57:26
○ 2026-03-01 14:14:20

○NSmichael.sf.edu2015-08-18 → 2017-09-24 · 4 obs

● 2015-08-18 07:22:08
● 2017-09-24 18:34:40
○ 2021-02-01 15:57:26
○ 2026-03-01 14:14:20

●NSns1-04.azure-dns.com2021-02-01 → 2026-03-01 · 3 obs

○ 2017-09-24 18:34:40
● 2021-02-01 15:57:26
● 2026-03-01 14:14:20

●NSns2-04.azure-dns.net2021-02-01 → 2026-03-01 · 3 obs

○ 2017-09-24 18:34:40
● 2021-02-01 15:57:26
● 2026-03-01 14:14:20

●NSns3-04.azure-dns.org2021-02-01 → 2026-03-01 · 3 obs

○ 2017-09-24 18:34:40
● 2021-02-01 15:57:26
● 2026-03-01 14:14:20

●NSns4-04.azure-dns.info2021-02-01 → 2026-03-01 · 3 obs

○ 2017-09-24 18:34:40
● 2021-02-01 15:57:26
● 2026-03-01 14:14:20

○NSwashington.ind.net2015-08-18 → 2017-09-24 · 4 obs

● 2015-08-18 07:22:08
● 2017-09-24 18:34:40
○ 2021-02-01 15:57:26
○ 2026-03-01 14:14:20

○MXbarracuda.sf.edu2015-08-18 → 2016-08-29 · 4 obs

● 2015-08-18 07:22:08
● 2016-08-29 05:53:08
○ 2016-09-07 19:08:04
○ 2026-03-01 14:14:20

○MXmx10.ihets.org2015-08-18 → 2017-09-24 · 4 obs

● 2015-08-18 07:22:08
● 2017-09-24 18:34:40
○ 2021-02-01 15:57:26
○ 2026-03-01 14:14:20

○MXmx11.ihets.org2015-08-18 → 2017-09-24 · 4 obs

● 2015-08-18 07:22:08
● 2017-09-24 18:34:40
○ 2021-02-01 15:57:26
○ 2026-03-01 14:14:20

●MXsf-edu.mail.protection.outlook.com2015-08-18 → 2026-03-01 · 2 obs

● 2015-08-18 07:22:08
● 2026-03-01 14:14:20

●A141.193.213.202026-02-19 → 2026-03-01 · 3 obs

○ 2021-02-01 15:57:26
● 2026-02-19 03:27:50
● 2026-03-01 14:14:20

●A141.193.213.212026-02-19 → 2026-03-01 · 3 obs

○ 2021-02-01 15:57:26
● 2026-02-19 03:27:50
● 2026-03-01 14:14:20

○A70.32.112.2062015-08-18 → 2017-01-15 · 4 obs

● 2015-08-18 07:22:08
● 2017-01-15 13:25:48
○ 2017-07-26 04:30:52
○ 2026-03-01 14:14:20

○A70.32.73.492017-07-26 → 2021-02-01 · 5 obs

○ 2017-01-15 13:25:48
● 2017-07-26 04:30:52
● 2021-02-01 15:57:26
○ 2026-02-19 03:27:50
○ 2026-03-01 14:14:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
edu	d.edu-servers.net, b.edu-servers.net, f.edu-servers.net, h.edu-servers.net...	-
sf.edu	ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.azure-dns.info	-

✅ Authoritative Response

Server: 150.171.21.4

NS records: ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.azure-dns.info

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sf.edu (unsigned zone)

⏱️ Timing

Total: 477ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`141.193.213.20, 141.193.213.21`
NS	4	`ns1-04.azure-dns.com, ns2-04.azure-dns.net...`
MX	1	`sf-edu.mail.protection.outlook.com (pri:`
TXT	9	`MS=ms53628929, fg466pd72mz95mgs077d8ch2ybr836xl...`
SOA	1	`ns1-04.azure-dns.com azuredns-hostmaster`

Analysis

Hierarchy

sf.edu is a parent of www.sf.edu, henry.sf.edu, cougars.sf.edu, service.sf.edu, go.sf.edu and a few other host names.

IP Addresses

sf.edu points to two IP numbers: 141.193.213.20 and 141.193.213.21.

Other host names such as t6r991nrqxs8.wpeproxy.com, 22fillmore.com, www.hairdoctornyc.com, voamass.org and discreplay.com share IPs with sf.edu.

Name Servers

sf.edu is delegated to four name servers: ns1-04.azure-dns.com, ns4-04.azure-dns.info, ns2-04.azure-dns.net and ns3-04.azure-dns.org.

sf.edu at least partially shares name servers with other domains, for instance northwestdairy.com, esab.co.tt, microsoftbusinessai.com, surfacepc.ca and capecanaveralbeach.org.

Host names with two IP numbers: ns1-04.azure-dns.com points to 2603:1061:0:700::4 and 13.107.236.4; ns4-04.azure-dns.info points to 2620:1ec:bda:700::4 and 208.84.5.4; ns2-04.azure-dns.net points to 2620:1ec:8ec:700::4 and 150.171.21.4; ns3-04.azure-dns.org points to 2a01:111:4000:700::4 and 204.14.183.4.

Mail Servers

sf.edu is handled by a single mail server, sf-edu.mail.protection.outlook.com.

Host name sf-edu.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c902::16, 2a01:111:f403:c91d::, 2a01:111:f403:f908::1, 2a01:111:f403:f90d::1, 52.101.9.5, 52.101.10.1, 52.101.11.13 and 52.101.50.1.

sf.edu - robtex.com

sf.edu

edu

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

`sf.edu`

`edu`