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Website Information
| Domain | duosecurity.com |
| Title | Complete Identity Security & MFA Solutions | Cisco Duo |
| Description | Duo Security offers solutions to protect organizations from identity threats. Explore Duo identity security, phishing-resistant MFA, and other solutions. |
Network & Domain Data
HTTP 200| URL | https://duosecurity.com |
| HTTP | HTTP/1.1 301 Moved Permanently |
| Content-Length | 0 |
| Connection | keep-alive |
| Server | AmazonS3 |
| Date | Fri, 17 Jul 2026 07:59:10 GMT |
| Location | https://duo.com/ |
| X-Cache | Hit from cloudfront |
| Via | 1.1 a7089858ca46e4593c8301dd0b1a2cd2.cloudfront.net (CloudFront) |
| X-Amz-Cf-Pop | FRA60-P10 |
| X-Amz-Cf-Id | b2XossWWWps-GbuVEhB1EshFTRG2py_tnLOcKOOllTwgV660qOOf2A== |
| Age | 72 |
| HTTP/2 200 | |
| content-type | text/html; charset=utf-8 |
| content-length | 130727 |
| date | Fri, 17 Jul 2026 08:00:21 GMT |
| accept-ranges | bytes |
| server | Duo/1.0 |
| last-modified | Thu, 16 Jul 2026 18:58:28 GMT |
| expires | Fri, 17 Jul 2026 08:05:21 GMT |
| cache-control | max-age=300 |
| strict-transport-security | max-age=63072000; includeSubDomains; preload |
| content-security-policy | frame-ancestors 'self' resources.duo.com learn-cloudsecurity.cisco.com; |
| x-content-type-options | nosniff |
| x-xss-protection | 1; mode=block |
| referrer-policy | no-referrer-when-downgrade |
| x-ua-compatible | IE=Edge,chrome=1 |
| etag | "6a5929d4-1fea7" |
| vary | Accept-Encoding |
| x-cache | Miss from cloudfront |
| via | 1.1 e161fd49d3d858d9f9d1d337fc91ce8e.cloudfront.net (CloudFront) |
| x-amz-cf-pop | FRA56-P10 |
| x-amz-cf-id | 3ig1otZuVZBj39aL_YPwwitPoCxLjvfPTIVJuePknLqgQsjRrdekuA== |
A
13.35.58.10
TTL 45
A
13.35.58.72
TTL 45
A
13.35.58.95
TTL 45
A
13.35.58.39
TTL 45
MX
10 alln-mx-01.cisco.com
TTL 900
MX
30 aer-mx-01.cisco.com
TTL 900
MX
20 rcdn-mx-01.cisco.com
TTL 900
NS
ns-896.awsdns-48.net
TTL 3600
NS
ns-272.awsdns-34.com
TTL 3600
NS
ns-1271.awsdns-30.org
TTL 3600
NS
ns-1600.awsdns-08.co.uk
TTL 3600
TXT
atlassian-domain-verification=R4UtYgXtORXRKnMUBQS0AFJD3EAxj2HTgORPt6C1/GLPaTOI7alUkMvuq/3ABby8
TTL 300
TXT
google-site-verification=zlwiWUyTXIR20h2du1EFVF_9W6mlgspR2iwUHOGbz6Q
TTL 300
TXT
_vz1bepjjh5vfz1kdz31jma6hzwg20ny
TTL 300
TXT
cisco-ci-domain-verification=5e3a213be18d8a0d35b53e7efed6be85c8f44493f253d7cc7ceb030ae9ddc2a4
TTL 300
TXT
z5c69y4b0q179syyqltskhhsrtndrx6m
TTL 300
TXT
hcp-domain-verification=2864ca4b8eab48057506880821e0203db32c5c2c09a71425ae6d5a1dfe8cb22c
TTL 300
TXT
status-page-domain-verification=wl6tj66k5qh5
TTL 300
TXT
duo_sso_verification=kuyK6IAuOS7ombaHhSEWM0gFk2Ja0oUHefceWQT7z4uU8rWqw8DjuTsUtmdRT6xd
TTL 300
TXT
MS=ms87573650
TTL 300
TXT
apple-domain-verification=2Vf56S4tuuskojVe
TTL 300
TXT
v=spf1 include:_spf.duosecurity.com include:_spf2.duosecurity.com include:_spf.google.com include:mktomail.com exists:%{i}._spf.mta.salesforce.com include:mail.zendesk.com include:spf.bananatag.com ~all
TTL 300
TXT
_k6higb2z1hho56o41tneh9qzuuezz9o
TTL 300
TXT
ygl4n9zvmlf74mcbbc8nmcr3wv915q7g
TTL 300
TXT
google-site-verification=HmBniYqxTjdE-G67pjqWN0Z92oVYeLYB0pRpBUAJ1sE
TTL 300
| Subject (CN) | www.duosecurity.com |
| Issuer | Amazon RSA 2048 M04 |
| Valid From | 2026-05-22 00:00:00 |
| Valid To | 2026-12-05 23:59:59 |
| Serial Number | 011340d810904a41722a4df4dc8c111a |
| Domain Name | DUOSECURITY.COM |
| Registry Domain ID | 1617753400_DOMAIN_COM-VRSN |
| Registrar WHOIS Server | whois.markmonitor.com |
| Registrar URL | http://www.markmonitor.com |
| Updated Date | 2025-07-25T19:03:00Z |
| Creation Date | 2010-09-27T20:30:21Z |
| Registry Expiry Date | 2026-09-27T20:30:21Z |
| Registrar | MarkMonitor Inc. |
| Registrar IANA ID | 292 |
| Registrar Abuse Contact Email | abusecomplaints@markmonitor.com |
| Registrar Abuse Contact Phone | +1.2086851750 |
| Domain Status | clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited |
| Domain Status | clientTransferProhibited https://icann.org/epp#clientTransferProhibited |
| Domain Status | clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited |
| Name Server | NS-1271.AWSDNS-30.ORG |
| Name Server | NS-1600.AWSDNS-08.CO.UK |
| Name Server | NS-272.AWSDNS-34.COM |
| Name Server | NS-896.AWSDNS-48.NET |
| DNSSEC | unsigned |
| URL of the ICANN Whois Inaccuracy Complaint Form | https://www.icann.org/wicf/ |
| >>> Last update of whois database | 2026-06-27T04:14:18Z <<< |
| For more information on Whois status codes, please visit https | //icann.org/epp |
| NOTICE | The expiration date displayed in this record is the date the |
| TERMS OF USE | You are not authorized to access or query our Whois |
| by the following terms of use | You agree that you may use this Data only |
| to | (1) allow, enable, or otherwise support the transmission of mass |
| Domain Name | duosecurity.com |
| Registry Domain ID | 1617753400_DOMAIN_COM-VRSN |
| Registrar WHOIS Server | whois.markmonitor.com |
| Registrar URL | http://www.markmonitor.com |
| Updated Date | 2025-07-25T19:03:00+0000 |
| Creation Date | 2010-09-27T20:30:21+0000 |
| Registrar Registration Expiration Date | 2026-09-27T00:00:00+0000 |
| Registrar | MarkMonitor, Inc. |
| Registrar IANA ID | 292 |
| Registrar Abuse Contact | https://corp.markmonitor.com/domain/ui/abuse-report |
| Registrar Abuse Contact Phone | +1.2086851750 |
| Domain Status | clientUpdateProhibited (https://www.icann.org/epp#clientUpdateProhibited) |
| Domain Status | clientTransferProhibited (https://www.icann.org/epp#clientTransferProhibited) |
| Domain Status | clientDeleteProhibited (https://www.icann.org/epp#clientDeleteProhibited) |
| Registrant Name | Domain Administrator |
| Registrant Organization | Cisco Technology Inc. |
| Registrant Street | 170 W. Tasman Dr. |
| Registrant City | San Jose |
| Registrant State/Province | CA |
| Registrant Postal Code | 95134 |
| Registrant Country | US |
| Registrant Phone | +1.4085273842 |
| Registrant Fax | +1.4085264575 |
| Registrant Email | infosec@cisco.com |
| Tech Name | Domain Administrator |
| Tech Phone | +1.4085273842 |
| Tech Email | infosec@cisco.com |
| Name Server | ns-1600.awsdns-08.co.uk |
| Name Server | ns-272.awsdns-34.com |
| Name Server | ns-896.awsdns-48.net |
| Name Server | ns-1271.awsdns-30.org |
| DNSSEC | unsigned |
| URL of the ICANN WHOIS Data Problem Reporting System | http://wdprs.internic.net/ |
| >>> Last update of WHOIS database | 2026-06-27T04:13:07+0000 <<< |
| https | //www.icann.org/resources/pages/epp-status-codes |
| https | //domains.markmonitor.com/whois/contact/duosecurity.com |
| Visit MarkMonitor at https | //www.markmonitor.com |