SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for teams-alerts-att.com

Valid
Issued by (CA)
DigiCert Inc
Subject
san5.attssl.com
Valid from
Oct 14, 2026
Valid until
Apr 30, 2027 (195 days remaining)
Public key
RSA 4096-bit
Serial
06FDC38B3B17744B1AB6D4ED80948A60
SHA-256 fingerprint
5F:C0:39:07:C3:D5:15:47:12:54:F2:78:7E:66:DB:D8:8A:C8:44:68:19:88:8E:DA:01:06:0C:5B:44:6B:DD:2C
Chain
DigiCert Global G2 TLS RSA SHA256 2020 CA1 → DigiCert Global Root G2
Subject Alternative Names (51)
admin.techchannel.att.com, api-east.flow.cloud.att.com, api-west.flow.cloud.att.com, api.flow.cloud.att.com, at-t.com.tr, att-change-history.com, att-corporate-card-alerts.com, att-fraud-alert.com, att-logonmanager.com, attprepaidacp.com, attprepaidebb.com, centralcommand.wayport.net, cou-alerts-att.com, cpsosasos.asi.sbc.com, cpsosasosqa-tmp.asi.sbc.com, dashboard.iot.att.com, e-access-att-login.com, ecam.prod.acs.att.com, gateway-test.c01.sbcglobal.net, gateway.c01.sbcglobal.net, gen-east.cloud.att.com, gen-west.cloud.att.com, gen.cloud.att.com, hr-alert-att.com, in-east.flow.cloud.att.com, in-west.flow.cloud.att.com, in.flow.cloud.att.com, paygonline.com, ple-att-update.com, portal.acdn.att.com, quantum-cso-att.com, redirect.ac.sl.attcompute.com, redirect1.ac.sl.attcompute.com, rsc.wayport.net, san5.attssl.com, smoothie-dev.cso.att.com, teams-alerts-att.com, test.paygonline.com, vpn-update-att.com, webtest.sbc.com, wsp.wayport.net, www.att.tv, www.attprepaidacp.com, www.attprepaidebb.com, www.business.att.com, www.businessdigital.att.com, www.corp.att.com, www.euro.att.com, www.europe.att.com, www.paygonline.com, www.uversecentral.att.com

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

We've observed 1 previous certificate for this host. This certificate has been served since Sep 23, 2026.

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Uptime

We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.

DNS changes

We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.

TLS certificate

We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.

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