us.edu - robtex.com

us.edu

DNSSEC⚠️ Not signed
A54.209.77.18🇺🇸 Amazon54.208.0.0/15 EC2 IAD prefix
PTRec2-54-209-77-18.compute-1.amazonaws.com
NSpdns01.domaincontrol.com ⭐
A2603:5:21e0::32🇺🇸 GODADDY-DNS2603:5:21e0::/44
PTRpdns01.domaincontrol.com
A97.74.110.50🇺🇸 GODADDY-DNS97.74.110.0/23
PTRpdns01.domaincontrol.com
NSpdns02.domaincontrol.com
A2603:5:22e0::32🇺🇸 GODADDY-DNS2603:5:22e0::/44
PTRpdns02.domaincontrol.com
A173.201.78.50🇺🇸 GODADDY-DNS173.201.78.0/23
PTRpdns02.domaincontrol.com
MXd186841a.ess.barracudanetworks.com ⭐
A209.222.82.252🇺🇸 Amazon209.222.82.0/24 EC2 Prefix
PTRmail.ess.barracuda.com
A209.222.82.253🇺🇸 Amazon209.222.82.0/24 EC2 Prefix
PTRmail.ess.barracuda.com
A209.222.82.255🇺🇸 Amazon209.222.82.0/24 EC2 Prefix
PTRmail.ess.barracuda.com
MXd186841b.ess.barracudanetworks.com(20)
A209.222.82.252🇺🇸 Amazon209.222.82.0/24 EC2 Prefix
PTRmail.ess.barracuda.com
A209.222.82.253🇺🇸 Amazon209.222.82.0/24 EC2 Prefix
PTRmail.ess.barracuda.com
A209.222.82.255🇺🇸 Amazon209.222.82.0/24 EC2 Prefix
PTRmail.ess.barracuda.com
TXTbf2krc7ek88uc6h5ouiq5l13c2
TXTapple-domain-verification=Rm2rV4dEPcIcd3OF
TXTapple-domain-verification=yVazT9OApvnnllGA
TXTapple-domain-verification=d1VVJMfTN4nLVevf
TXTadobe-idp-site-verification=5378e4d06ec673e97a1d5a1c90146c07e738f61e28f5e5ded...
TXT9cksaa0o6v5pspu368qibt0vrd
TXTgcjj00kd9a558v210rg4gau5qh
TXTb+jexuvontAnnBdaTsXIrV+HeJuZDmKwaJnhvi1mlYkm7Rm0gzCRe5ssxfH1sxjH522Y1MA5te7Yh...
TXTMS=30A3505F1C177B5CA75BB228DFA9421E76D8B662
TXTgoogle-site-verification=IjArN1QQICZ6Yz8LOjkGl87jDE1LkQKa2YO49pqzEOs
TXTv=spf1 ip4:173.241.233.35 include:spf.protection.outlook.com include:outbound...
TXTgoogle-site-verification=7MCJ8okgzOhqehSWvcIXvtpNK2jHi4kO_h2dLcFB3cE
TXTMS=ms73362105
TXTschoology-domain-verification=bc227a26ec862c213060430bbef2da5f9e74633bec4148f...
TXT69m2hrvq1ktm1h3q5l7on1fbmp
TXTgoogle-site-verification=ATCStSyDlKTpFWoJx_fG3L8iXq0maCZSniOkzEJJOuM
SOApdns01.domaincontrol.comdns@jomax.net 2026-02-04 #0

edu

DNSSEC🔒 Signed (DS record present)
NSa.edu-servers.net ⭐
NSb.edu-servers.net
NSc.edu-servers.net
NSd.edu-servers.net
NSe.edu-servers.net
NSf.edu-servers.net
NSg.edu-servers.net
NSh.edu-servers.net
NSi.edu-servers.net
NSj.edu-servers.net
NSk.edu-servers.net
NSl.edu-servers.net
NSm.edu-servers.net
SOAa.edu-servers.netnstld@verisign-grs.com serial=1771608165
rank #549283 globally
rank #3185 in the tld
WOT: SAFE (81/100)

Up

www.us.edu

Same first word

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us.nl.eu.org
us.co
us.s3-website.us-east-2.amazonaws.com
us.taxi
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us.fr
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us.tn
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us.com.ua
us.education
us.mk
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us.gs
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us.edu.pl
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us.com.ph
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us.su
us.app
us.org
us.eu.org
us.hm
us
us.life
us.fit
us.neustar
us.es
us.awsapps.com
us.fo
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us.fm
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su.sg
su.hu
su.nl
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su.domains
su.ph
su.by
su.gallery
su.is

DNS History

9 records (5 active, 4 former)

20162017201820192020202120222023202420252026NSpdns01.domaincontrol.compdns02.domaincontrol.comMXd186841a.ess.barracudanetworks.comd186841b.ess.barracudanetworks.comexchange.us.eduus-edu.mail.eo.outlook.comus-edu.mail.protection.outlook.comA54.209.77.1874.123.154.233
●NSpdns01.domaincontrol.com2015-08-12 → 2026-02-24 · 2 obs
● 2015-08-12 02:18:50
● 2026-02-24 21:41:44
●NSpdns02.domaincontrol.com2015-08-12 → 2026-02-24 · 2 obs
● 2015-08-12 02:18:50
● 2026-02-24 21:41:44
●MXd186841a.ess.barracudanetworks.com2021-06-25 → 2026-02-24 · 3 obs
○ 2018-05-23 02:26:20
● 2021-06-25 03:34:42
● 2026-02-24 21:41:44
●MXd186841b.ess.barracudanetworks.com2021-06-25 → 2026-02-24 · 3 obs
○ 2018-05-23 02:26:20
● 2021-06-25 03:34:42
● 2026-02-24 21:41:44
○MXexchange.us.edu2015-08-12 → 2016-10-20 · 4 obs
● 2015-08-12 02:18:50
● 2016-10-20 12:46:40
○ 2016-11-05 20:25:54
○ 2026-02-24 21:41:44
○MXus-edu.mail.eo.outlook.com2016-11-05 → 2018-05-23 · 5 obs
○ 2016-10-20 12:46:40
● 2016-11-05 20:25:54
● 2018-05-23 02:26:20
○ 2021-06-25 03:34:42
○ 2026-02-24 21:41:44
○MXus-edu.mail.protection.outlook.com2015-08-12 → 2015-11-15 · 4 obs
● 2015-08-12 02:18:50
● 2015-11-15 02:12:16
○ 2015-11-21 12:04:44
○ 2026-02-24 21:41:44
●A54.209.77.182015-08-12 → 2026-02-24 · 6 obs
● 2015-08-12 02:18:50
● 2017-01-03 00:40:30
○ 2017-04-24 10:53:20
○ 2017-05-10 23:48:08
● 2017-12-29 10:07:50
● 2026-02-24 21:41:44
○A74.123.154.2332017-04-24 → 2017-05-10 · 5 obs
○ 2017-01-03 00:40:30
● 2017-04-24 10:53:20
● 2017-05-10 23:48:08
○ 2017-12-29 10:07:50
○ 2026-02-24 21:41:44

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
edua.edu-servers.net, b.edu-servers.net, c.edu-servers.net, d.edu-servers.net...-
us.edupdns01.domaincontrol.com, pdns02.domaincontrol.com-

✅ Authoritative Response

Server: 173.201.78.50

NS records: pdns01.domaincontrol.com, pdns02.domaincontrol.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for us.edu (unsigned zone)

⏱️ Timing

Total: 320ms | Queries: -

📄 Records

TypeCountSample Data
A154.209.77.18
NS2pdns01.domaincontrol.com, pdns02.domaincontrol.com
MX2d186841a.ess.barracudanetworks.com (pri:, d186841b.ess.barracudanetworks.com (pri:
TXT16bf2krc7ek88uc6h5ouiq5l13c2, apple-domain-verification=Rm2rV4dEPcIcd3...
SOA1pdns01.domaincontrol.com dns.jomax.net

AI analysis

us.edu is parent of www.us.edu.

us.edu points to a single IP: 54.209.77.18.

Other host names, for instance csus.org, strakejesuit.org, cds-sf.org, idealschool.org and spenceschool.org share IP numbers with us.edu.

us.edu's delegation is to two name servers pdns01.domaincontrol.com and pdns02.domaincontrol.com.

us.edu shares the same name server configuration as other domains, such as luxurypenthousesmiamibeach.com, inteva.cn, etariff.info, tcgta.net and aller-ease.info.

us.edu at least partially shares its name servers with other domains, for instance kilsgaard-tueren.de, fab-kassel.de, apovinci.com, yii-spot.de and velebeat.com.

Host names with two IP numbers: pdns01.domaincontrol.com points to 2603:5:21e0::32 and 97.74.110.50; pdns02.domaincontrol.com points to 2603:5:22e0::32 and 173.201.78.50

Two mail servers d186841a.ess.barracudanetworks.com and d186841b.ess.barracudanetworks.com handle us.edu.

Host names with three IP numbers

Host d186841a.ess.barracudanetworks.com points to 209.222.82.252, 209.222.82.253 and 209.222.82.255

Host d186841b.ess.barracudanetworks.com points to 209.222.82.252, 209.222.82.253 and 209.222.82.255

Host names that point to 209.222.82.252: d186841a.ess.barracudanetworks.com and d186841b.ess.barracudanetworks.com

Host names that point to 209.222.82.253: d186841a.ess.barracudanetworks.com and d186841b.ess.barracudanetworks.com

Host names that point to 209.222.82.255: d186841a.ess.barracudanetworks.com and d186841b.ess.barracudanetworks.com