DNS
THE CERTIFICATE BEHIND THE CONNECTION

TLS certificate checker.

Inspect SSL/TLS certificates for any public domain or subdomain.

Checks HTTPS on port 443, including subject alternative names, validity dates and the presented chain.

SSL certificate

TLSv1.3

mail.fratec.com · 200.59.23.67:443

Verified

Certificate chain, hostname and dates verified using this server’s CA store.

Subject
CN=cowmail.fratec.net
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-10-22T00:29:05+00:00
Expires
2027-01-20T00:29:04+00:00
Days remaining
78
Serial (hex)
0651468271C96FCD7229B92A943C0D2A3E87
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:autoconfig.agrales.com, DNS:autoconfig.audiocinema.net, DNS:autoconfig.avlcr.org, DNS:autoconfig.bitslatam.com, DNS:autoconfig.chispa.cr, DNS:autoconfig.edplus.or.cr, DNS:autoconfig.fcacostarica.com, DNS:autoconfig.fratec.com, DNS:autoconfig.geovalorcr.com, DNS:autoconfig.goek-9.com, DNS:autoconfig.grupotecnocr.com, DNS:autoconfig.importadoracondor.com, DNS:autoconfig.indudi.com, DNS:autoconfig.prosegcr.com, DNS:autoconfig.salper.com, DNS:autoconfig.seysacr.com, DNS:autoconfig.sytcr.net, DNS:autoconfig.tso.co.cr, DNS:autodiscover.agrales.com, DNS:autodiscover.audiocinema.net, DNS:autodiscover.bitslatam.com, DNS:autodiscover.chispa.cr, DNS:autodiscover.edplus.or.cr, DNS:autodiscover.fcacostarica.com, DNS:autodiscover.fratec.com, DNS:autodiscover.geovalorcr.com, DNS:autodiscover.goek-9.com, DNS:autodiscover.grupotecnocr.com, DNS:autodiscover.importadoracondor.com, DNS:autodiscover.indudi.com, DNS:autodiscover.prosegcr.com, DNS:autodiscover.salper.com, DNS:autodiscover.seysacr.com, DNS:autodiscover.sytcr.net, DNS:autodiscover.tso.co.cr, DNS:cowmail.fratec.net, DNS:mail.agrales.com, DNS:mail.artecarballo.net, DNS:mail.audiocinema.net, DNS:mail.avlcr.org, DNS:mail.bitslatam.com, DNS:mail.chispa.cr, DNS:mail.edplus.or.cr, DNS:mail.fcacostarica.com, DNS:mail.fratec.com, DNS:mail.geovalorcr.com, DNS:mail.goek-9.com, DNS:mail.grupomanuelmora.com, DNS:mail.grupotecnocr.com, DNS:mail.importadoracondor.com, DNS:mail.indudi.com, DNS:mail.intopo.com, DNS:mail.k-9group.com, DNS:mail.prosegcr.com, DNS:mail.salascr.com, DNS:mail.salper.com, DNS:mail.seysacr.com, DNS:mail.sytcr.net, DNS:mail.ticos.social, DNS:mail.tso.co.cr, DNS:webmail.agrales.com, DNS:webmail.artecarballo.net, DNS:webmail.audiocinema.net, DNS:webmail.avlcr.org, DNS:webmail.bitslatam.com, DNS:webmail.chispa.cr, DNS:webmail.edplus.or.cr, DNS:webmail.fcacostarica.com, DNS:webmail.fratec.com, DNS:webmail.geovalorcr.com, DNS:webmail.goek-9.com, DNS:webmail.grupomanuelmora.com, DNS:webmail.grupotecnocr.com, DNS:webmail.importadoracondor.com, DNS:webmail.indudi.com, DNS:webmail.intopo.com, DNS:webmail.k-9group.com, DNS:webmail.prosegcr.com, DNS:webmail.salascr.com, DNS:webmail.salper.com, DNS:webmail.seysacr.com, DNS:webmail.sytcr.net, DNS:webmail.ticos.social, DNS:webmail.tso.co.cr

SHA-256 fingerprint

6D:03:50:C2:BF:66:3B:BC:36:CE:D4:31:A2:6C:47:03:0A:57:8B:84:C3:7E:A0:D8:68:7C:07:98:F0:CB:5E:FE
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
45:8A:B2:3A:B3:48:9E:99:04:48:58:2E:23:D1:A5:19:BD:41:F6:F8
authorityKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityInfoAccess
CA Issuers - URI:http://yr1.i.lencr.org/
subjectAltName
DNS:autoconfig.agrales.com, DNS:autoconfig.audiocinema.net, DNS:autoconfig.avlcr.org, DNS:autoconfig.bitslatam.com, DNS:autoconfig.chispa.cr, DNS:autoconfig.edplus.or.cr, DNS:autoconfig.fcacostarica.com, DNS:autoconfig.fratec.com, DNS:autoconfig.geovalorcr.com, DNS:autoconfig.goek-9.com, DNS:autoconfig.grupotecnocr.com, DNS:autoconfig.importadoracondor.com, DNS:autoconfig.indudi.com, DNS:autoconfig.prosegcr.com, DNS:autoconfig.salper.com, DNS:autoconfig.seysacr.com, DNS:autoconfig.sytcr.net, DNS:autoconfig.tso.co.cr, DNS:autodiscover.agrales.com, DNS:autodiscover.audiocinema.net, DNS:autodiscover.bitslatam.com, DNS:autodiscover.chispa.cr, DNS:autodiscover.edplus.or.cr, DNS:autodiscover.fcacostarica.com, DNS:autodiscover.fratec.com, DNS:autodiscover.geovalorcr.com, DNS:autodiscover.goek-9.com, DNS:autodiscover.grupotecnocr.com, DNS:autodiscover.importadoracondor.com, DNS:autodiscover.indudi.com, DNS:autodiscover.prosegcr.com, DNS:autodiscover.salper.com, DNS:autodiscover.seysacr.com, DNS:autodiscover.sytcr.net, DNS:autodiscover.tso.co.cr, DNS:cowmail.fratec.net, DNS:mail.agrales.com, DNS:mail.artecarballo.net, DNS:mail.audiocinema.net, DNS:mail.avlcr.org, DNS:mail.bitslatam.com, DNS:mail.chispa.cr, DNS:mail.edplus.or.cr, DNS:mail.fcacostarica.com, DNS:mail.fratec.com, DNS:mail.geovalorcr.com, DNS:mail.goek-9.com, DNS:mail.grupomanuelmora.com, DNS:mail.grupotecnocr.com, DNS:mail.importadoracondor.com, DNS:mail.indudi.com, DNS:mail.intopo.com, DNS:mail.k-9group.com, DNS:mail.prosegcr.com, DNS:mail.salascr.com, DNS:mail.salper.com, DNS:mail.seysacr.com, DNS:mail.sytcr.net, DNS:mail.ticos.social, DNS:mail.tso.co.cr, DNS:webmail.agrales.com, DNS:webmail.artecarballo.net, DNS:webmail.audiocinema.net, DNS:webmail.avlcr.org, DNS:webmail.bitslatam.com, DNS:webmail.chispa.cr, DNS:webmail.edplus.or.cr, DNS:webmail.fcacostarica.com, DNS:webmail.fratec.com, DNS:webmail.geovalorcr.com, DNS:webmail.goek-9.com, DNS:webmail.grupomanuelmora.com, DNS:webmail.grupotecnocr.com, DNS:webmail.importadoracondor.com, DNS:webmail.indudi.com, DNS:webmail.intopo.com, DNS:webmail.k-9group.com, DNS:webmail.prosegcr.com, DNS:webmail.salascr.com, DNS:webmail.salper.com, DNS:webmail.seysacr.com, DNS:webmail.sytcr.net, DNS:webmail.ticos.social, DNS:webmail.tso.co.cr
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/8.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99: EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9 Timestamp : Oct 22 01:27:35.636 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:F4:91:EE:1B:FB:86:7D:98:E7:9D:F7: DE:59:91:EE:C6:E3:AB:51:5D:96:2B:E5:6C:CA:AD:63: 2C:5A:1F:3C:C7:02:20:57:43:C9:8C:F0:98:22:AE:4E: 21:99:BF:DE:9B:41:14:10:5E:40:32:BE:55:D6:F6:3E: 98:60:C6:A6:4D:FB:CD Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 59:6E:6C:33:86:94:B2:59:72:A2:56:C8:A0:E8:DD:90: 4A:76:E8:08:3D:DA:87:3B:01:08:38:28:14:3C:EE:59 Timestamp : Oct 22 01:27:35.649 2026 GMT Extensions: 00:00:05:00:12:39:EA:70 Signature : ecdsa-with-SHA256 30:46:02:21:00:B1:40:C1:94:83:3D:EC:DB:B8:7F:17: CF:29:07:C2:05:16:1F:92:73:E8:5F:BA:8C:3D:01:71: 51:4A:A0:43:71:02:21:00:AB:C0:3D:EB:6F:0D:4A:0E: C0:75:D8:98:36:47:D7:57:F3:3E:C9:36:13:BA:56:83: 00:99:9C:64:6B:B4:C1:52
-----BEGIN CERTIFICATE-----
MIINgDCCDGigAwIBAgISBlFGgnHJb81yKbkqlDwNKj6HMA0GCSqGSIb3DQEBCwUA
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HeDJFcNoWI9HnPtG+Hjs/ixToh+rxvc/QIfz6/5V3L4py0ZXCShFXJmI6Tci/Q74
EkaDcA==
-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-11-02T07:21:19+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR1
Issuer
C=US O=ISRG CN=Root YR
Valid from
2025-09-03T00:00:00+00:00
Expires
2028-09-02T23:59:59+00:00
Days remaining
670
Serial (hex)
A20253F15F2691C05DC1CE13B9BCCA4E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:94:96:34:D9:9C:D6:FD:6A:A8:0B:C0:34:FE:FA:CC:EB:19:69:FE:EF:98:65:86:71:3E:CD:BB:05:75:8D:3F
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityInfoAccess
CA Issuers - URI:http://yr.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=ISRG CN=Root YR
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2026-05-13T00:00:00+00:00
Expires
2032-09-02T23:59:59+00:00
Days remaining
2131
Serial (hex)
F24B6D17F9D9AD7CB1C9FEA78782699F
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

07:26:39:D0:B1:40:D5:BF:FA:E1:6A:D9:C3:F6:CC:60:86:04:06:21:F5:1E:E6:1A:6D:46:A8:91:5C:07:CF:76
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE
subjectKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityKeyIdentifier
79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
authorityInfoAccess
CA Issuers - URI:http://x1.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

View certificate JSON

Registration / WHOIS →DNS records →