Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
x.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-24 20:59:40 UTC · ↺ Refresh
MX Hostnames
- aspmx.l.google.com
- alt4.aspmx.l.google.com
- alt3.aspmx.l.google.com
- alt1.aspmx.l.google.com
- alt2.aspmx.l.google.com
MX Priorities
- alt2.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
- alt3.aspmx.l.google.com: 10
- alt4.aspmx.l.google.com: 10
- alt1.aspmx.l.google.com: 5
A / AAAA Records
- 172.66.0.227
Mail Server IPs
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 172.253.62.27 ↩ bc-in-f27.1e100.net
- 2607:f8b0:4004:c23::1a ↩ yuiadrs-in-f26.1e100.net
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
- 173.194.76.26 ↩ ws-in-f26.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-f26.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
SOA Record
Raw SOA
a.u10.twtrdns.net noc.twitter.com 2023251462 3600 600 604800 300
Primary NS (mname)
a.u10.twtrdns.net
Admin Email (rname)
noc@twitter.com
Serial
2023251462
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
c.u10.twtrdns.net
d.r10.twtrdns.net
d.u10.twtrdns.net
a.r10.twtrdns.net
a.u10.twtrdns.net
b.r10.twtrdns.net
b.u10.twtrdns.net
c.r10.twtrdns.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:199.16.156.0/22 ip4:199.59.148.0/22 include:_spf.google.com include:_spf.salesforce.com include:_oerp.x.com include:phx1.rp.oracleemaildelivery.com include:iad1.rp.oracleemaildelivery.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
google._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
18 records- apple-domain-verification=sEij6tJOW11fVNrG
- stripe-verification=46F7B88485621DC18923B43D12E90E6CDBCE232F2FEBCF084E6EFA91F6BA707D
- kkdl3qb3tcrmdhfsm803p67r0my0svs8
- google-site-verification=reUF-TgZq93ZGtzImw42sfYglI2hY0QiGRmfc4jeKbs
- google-site-verification=rbRGYlOADDbtUYJTGd8GEDm0PwPZExviDSaSH4JLR8Q
- adobe-idp-site-verification=ab4d9ce3473a73e81f46238da34ea4967fd5ac80e5c43fbfa8dff46d06a5321c
- figma-domain-verification=ee8420edd01965ba297f3438c907cfc6fbbaa1ee90a07b28f28bcfca8e6017bb-1729630998
- google-site-verification=8yQmoVhQedzlt36RPeQP41ytrEFk9aHEnde_xm0626g
- adobe-sign-verification=c693a744ee2d282a36a43e6e724c5ea
- shopify-verification-code=cUZazKrqCWgcshrcGvgfFR1lieuhRF
- atlassian-sending-domain-verification=bd424180-8645-4de5-bd6a-285479c7577a
- _w548xs1kfxtlqk3jyx19bzwk34c473i
- atlassian-domain-verification=j6u0o1PTkobCXC84uEF/sWpIPtaZURBVYqKzmTvT8wugLcHT1vvrzzA63iP1qSLN
- google-site-verification=F6u9mGL--d2lbLljvH3b1UUgXtevQPdcamKr9c8914A
- slack-domain-verification=Csk4bjCPFnJaDLLaKFUwCTFuUpCVvnYlAm2Tba0i
- 3089463
- google-site-verification=lEZNYWieV7-UbDJafAm0u_RvNFb7GGqIYWAP4JmG5qs
- SPFv=spf1 ip4:199.16.156.0/22 ip4:199.59.148.0/22 include:_spf.google.com include:_spf.salesforce.com include:_oerp.x.com include:phx1.rp.oracleemaildelivery.com include:iad1.rp.oracleemaildelivery.com -all
Full email verification for x.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits