Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cisco.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-24 05:09:30 UTC · ↺ Refresh
MX Hostnames
- alln-mx-01.cisco.com
- aer-mx-01.cisco.com
- rcdn-mx-01.cisco.com
MX Priorities
- alln-mx-01.cisco.com: 10
- aer-mx-01.cisco.com: 30
- rcdn-mx-01.cisco.com: 20
A / AAAA Records
- 72.163.4.185 ↩ redirect-ns.cisco.com
- 2001:420:1101:1::185 (no PTR)
Mail Server IPs
- 173.37.147.230 ↩ alln-mx-01.cisco.com
- 2001:420:1201:6::ad25:93e6 ↩ alln-mx-01.cisco.com
- 173.38.212.150 ↩ aer-mx-01.cisco.com
- 2001:420:4621::ad26:d496 ↩ aer-mx-01.cisco.com
- 72.163.7.166 ↩ rcdn-mx-01.cisco.com
- 2001:420:1101:7::48a3:166 ↩ rcdn-mx-01.cisco.com
SOA Record
Raw SOA
ns1.cisco.com postmaster.cisco.com 1193817 7200 1800 864000 1800
Primary NS (mname)
ns1.cisco.com
Admin Email (rname)
postmaster@cisco.com
Serial
1193817
Refresh
7200s
Retry
1800s
Expire
864000s
Minimum TTL
1800s
Nameservers (NS)
ns2.cisco.com
a28-64.akam.net
ns3.cisco.com
a3-64.akam.net
ns1.cisco.com
SPF Record
✓ Soft Fail (~all)
v=spf1 redirect=spfa._spf.cisco.com
📊 DNS lookups: 1/10
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; sp=reject; fo=1; ri=3600; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
81 records- 926723159-3188410
- airtable-verification=d95d028f039252314cb7507fb88e4317
- pendo-domain-verification=c9796502-c914-4e50-892d-e426f2ac68e9
- yahoo-verification-key=2B33D2zyxdBOxUw/abowAuwQ2pdtznP6ULDfQC3ag2g=
- pendo-domain-verification=Ad800_b0VJCaE7Ued9Ug3pIQ_V4
- adobe-idp-site-verification=c900335b8b825859b51473b9943a3880ae795df47426483b0a67630377a902f5
- pendo-domain-verification=c9d2fba1-7d94-4cf9-a6fb-310883c8bb15
- stripe-verification=0BAD851A6A7ACC4A12DDCE03460CCEFAC86320A8494FDCCED35F71EE25EF3D03
- facebook-domain-verification=qr2nigspzrpa96j1nd9criovuuwino
- atlassian-domain-verification=2ldosmg0o2Mhpyok1OISaSGygWU9zk6fLLWdoczXtHap9luhaHA/pwEaj2Tk6ROK
- notion-domain-verification=IsKmFIvIIP8RUQNn4ZGQjzuCdZnI7TY7xcIYb65QQE8
- airtable-verification=18787f2dc47697bb547e871772aba0be
- duo_sso_verification=IYdVUIrb2L95JVejSXV3hfsJVDZolQKKOPBztlD6TIgfCRSKeMuf8WgbQuFLD4aL
- fastly-domain-delegation-im0VCGY5X0axEEmhXJb2-347911-20210310
- OSSRH-97236
- atlassian-domain-verification=AYTzL6wSVsW0IdyQp7gwv6lwtHdpMATnb8QriqyJ0niAaZct9kdSlXvfuE4GcoxU
- twilio-domain-verification=268434bd6a91bdd8d3bb5e6cffeeace7
- duo_sso_verification=AxenLdoqIXzjl2RJzE1BlOfkawDbDFlnbyvjAt8vcjKHBkvYwEMySDRk5QmBd66v
- atlassian-domain-verification=Gt2demeKDLmtNc9kPZhaAHFA37DEIcmFGUd6LARvB4yjLG70s3WZhaJJ15y499sb
- atlassian-domain-verification=7JYRlY9ijBijTJ0YS5a8/58DU7OfKAHMYRufcy0TC57j2mNceH8rg4ajRzErc22Z
- duo_sso_verification=pG21Oj5OPCxRPsWXsfbauWT9oua82cKtYUPAmsQvovKNq3xqWEcsEMEAhtXy8AFr
- atlassian-domain-verification=672RcADvt8BPqsb9gCN2ZC5DoTAhUT8abC1blYKQxi/MHMaGoA/BuvjFMaWRtgd7
- asv=ac90e11808e87cfbf8768e69819b1aca
- elevenlabs=X_8Xi7v2hC20yVbziZuWtkapfDzUtNK3BogfZKVe9gY
- amazonses:QbUv5pPHGQxRy1vKA0J7Y/biE9oR6MTxOTI1bZIfjsw=
- flexera-domain-verification-nsbtshbvpbsmbnzh
- google-site-verification=9MlQU9MMQ1jHLMUkONKe6QzZ-ZIGRv0BCD1_rY1Zdmc
- bfefecbd-d5df-4b3a-b0dd-54bf5c72e698
- airtable-verification=8bf444fd0fad14a3aae2681cb7d68641
- airtable-verification=606530d538d1833c5fc724117ca5409a
- google-site-verification=WmdDuSXl3PMb-48qcY6VUbW9kzNPe46zn9uDwgB2wX0
- mZvHszGlmDhvPOUKL+6JMiw/VtckyOMKjcw1PLcjYowxM2PVLX2xG0ZSgdHRm8HXfaaGR2pMvhIrBX1tX3aKRQ==
- wiz-domain-verification=af241e6396696eedf1b361891435f6b21bdebb5621941d99279298c076b5bf5f
- cloudflare_dashboard_sso=f60a7d128e406b8d9dd4103dd3554f6b
- docusign=95052c5f-a421-4594-9227-02ad2d86dfbe
- adobe-aem-verification=www-devint-cloud.cisco.com/24859/366173/9418f2a2-ef45-4788-9de9-91c7d19038b9
- jetbrains-domain-verification=e9mcf886rjng68x4qu59h22ef
- SPFv=spf1 redirect=spfa._spf.cisco.com
- identrust_validation=IGfVhawoLyaH5CKT49RKObpqHgYyXRvd691dO1oCEOfh
- fastly-domain-delegation-z9slsbDdX0-368365-2021-05-14
- airtable-verification=d886631ce96b77ba775f9bddab44df92
- MS=ms35724259
- google-site-verification=qPS9ZkoQ-Og1rBrM1_N7z-tNJNy2BVxE8lw6SB2iFdk
- apple-domain-verification=qOInipPgso3W8cmK
- google-site-verification=r-K1CIdXkgRWxZstUHtVyM2UfwflnGgr4AR9_Qhk28Q
- duo_sso_verification=sKMGaTln2vmQuKwaE4hKtTEY1UYn2JzAaxSZzGjkgJrKuZChN344mhIptyczoNBA
- h1-domain-verification=rix5vuxntVpma4rTL2DbE3FDrrPjedhnRaqaHvghyod3egmZ
- airtable-verification=c0b5bd3f3db736f775f0dbe4e103cdea
- fastly-domain-delegation-e9a758d22183504af2d5ab4d9a9853da-20210127
- google-site-verification=Vc0Pir22m1u9yw5HjXf6TYO6rlAI9EY8IVKUma-OqDY
- airtable-verification=8cd8b684d3d85964f2769dcb89944501
- intercom-domain-validation=8806e2f9-7626-4d9e-ae4d-2d655028629a
- jamf-site-verification=0mwRCzzRvk_HiKjmiqR3Lw
- sending_domain1067842=8806a83586b0389c05457f8b2f06e4859b3f1b0d6bad52e5fee552bfd0a853e0
- docusign=5e18de8e-36d0-4a8e-8e88-b7803423fa2f
- google-site-verification=V3t2K3dvr9fcd1YWwwanSmebEOO_UNTP06HR2_gUO5M
- ZOOM_verify_Gf6CaEdJ5aKGvjcUrZRkiA
- notion-domain-verification=7sz4S3LLtNIHZpYsgTTgOcRLlLrJ5JrmIgVcdRtGi1X
- google-site-verification=lW5eqPMJI4VrLc28YW-JBkqA-FDNVnhFCXQVDvFqZTo
- cursor-domain-verification-evn8nj=Ml5OeQYe3sBg8uZOIeRrJgCO7
- fastly-domain-delegation-w049tcm0w48ds-341317-20210209
- pendo-domain-verification=5995ba9c-9bf8-43d8-9e5a-309856760011
- flexera-domain-verification-oxonqwdadtkprrcn
- mixpanel-domain-verify=2c6cb1aa-a3fb-44b9-ad10-d6b744109963
- amazonses:7LyiKZmpuGja4+KbA4xX3lN69yajYKLkHH4QJcWnuwo=
- duo_sso_verification=6Q7pJwSZ3damWHBcB8TNd9I5oduLRAFDDhip2pTFaa3QoIZtZnCgzjyZr5teSOWS
- stripe-verification=8e54fae7680b23aad6d5e3417be73a043f7e45cd2767272dbe0c9c6eac903291
- miro-verification=53bf5ccd47cb6239fe5cf14c3b328050dd5679ac
- c900335b8b825859b51473b9943a3880ae795df47426483b0a67630377a902f5
- adobe-aem-verification=www-idev-cloud.cisco.com/24859/366204/1b990ef7-ff88-4938-bdd9-8458cc152f57
- stripe-verification=2B4F3B35976CFB93CA884A90BF3E0A8873EAC7C5AFD06D7047E87B794EC55DBB
- facebook-domain-verification=1zoxo8z7t013gpruxmhc8dkerq47vh
- workplace-domain-verification=Uhv7QPQ22nbuD3vG0jspf7R6LruYoS
- atlassian-domain-verification=UwP1ncfiphlFs+wRx8wIBSXDScwNL7Jrw7tq2rnYz3+9T5+Md9eTDRgNPCikxtOx
- sending_domain731003=25e34fadea88da7e64f0fab1e32d094f1f1e0fb2b97622deac2521f7a2c5b2bc
- SFMC-o7HX74BQ79k7glpt_qjlF2vmZO9DpqLtYxKLwg87
- amazonses:mX+ylQj+fJAfh9pr03yIR7YvjKZ1bOo5ABegqM/5pvI=
- hubspot-domain-verification=NDQzNGY2ZWEtZTY0ZC00ZDQyLWI4YzctOGRkNDVjNTQ4YTAx
- airtable-verification=4114c0f710cfc430d841e55ed7ed920d
- docker-verification=4c56633a-274e-4858-88a2-2aeceffcfd66
- QuoVadis=94d4ae74-ecd5-4a33-975e-a0d7f546c801
Full email verification for cisco.com
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