DNS
SSL certificate
TLSv1.3syt.com · 200.55.247.210:443
Certificate chain, hostname and dates verified using this server’s CA store.
- Subject
- CN=syt.com
- Issuer
- C=US O=Let's Encrypt CN=YR2
- Valid from
- 2026-08-14T12:59:57+00:00
- Expires
- 2026-11-12T12:59:56+00:00
- Days remaining
- 39
- Serial (hex)
- 057602F858E8856B78693CE02AA7D60EFB44
- Signature
- RSA-SHA256
- Public key
- RSA 2048
Subject alternative names (SAN)
DNS:syt.com, DNS:webmail.syt.com, DNS:www.syt.com
SHA-256 fingerprint
B9:2A:BD:E5:F1:7D:20:9A:FC:FA:E0:45:82:AC:93:A7:8C:B4:D2:DA:90:DD:22:44:FA:E5:47:D3:F3:3D:96:44
Certificate extensions & PEM
- keyUsage
- Digital Signature, Key Encipherment
- extendedKeyUsage
- TLS Web Server Authentication
- basicConstraints
- CA:FALSE
- subjectKeyIdentifier
- A4:FA:8A:BD:33:A3:4E:63:5B:FA:E1:6E:11:DB:76:51:CB:8D:38:A1
- authorityKeyIdentifier
- 40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
- authorityInfoAccess
- CA Issuers - URI:http://yr2.i.lencr.org/
- subjectAltName
- DNS:syt.com, DNS:webmail.syt.com, DNS:www.syt.com
- certificatePolicies
- Policy: 2.23.140.1.2.1
- crlDistributionPoints
- Full Name: URI:http://yr2.c.lencr.org/69.crl
- ct_precert_scts
- Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9: 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77 Timestamp : Aug 14 13:58:27.841 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:91:BA:B5:56:4C:2A:F8:D2:D7:02:B7: D0:39:4D:02:7B:D7:47:CF:5B:48:18:E6:93:D1:83:BB: D0:B1:B4:81:4D:02:21:00:B1:24:12:8B:D6:1F:D2:38: AC:B8:20:DF:B9:26:FC:68:2B:EC:F1:56:4A:74:65:AC: 7B:66:2D:37:8C:FB:C4:6C Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 26:E3:64:6E:58:69:21:23:BC:34:3F:47:24:35:9B:37: 92:CD:24:5A:88:D8:15:D3:93:33:FD:99:18:AB:47:23 Timestamp : Aug 14 13:58:26.444 2026 GMT Extensions: 00:00:05:00:34:A5:22:5A Signature : ecdsa-with-SHA256 30:43:02:20:38:0E:40:58:22:60:40:1D:E0:BD:F0:0F: E2:91:E4:8F:11:19:F0:F1:79:94:B6:7B:B2:7C:47:D3: 28:F5:E7:2C:02:1F:1A:E8:B3:F3:08:C4:DA:08:3F:8C: 49:04:63:75:D9:51:23:1C:63:06:C2:4F:45:8C:60:25: 99:A4:DA:76:7A
-----BEGIN CERTIFICATE----- MIIFBTCCA+2gAwIBAgISBXYC+FjohWt4aTzgKqfWDvtEMA0GCSqGSIb3DQEBCwUA MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD EwNZUjIwHhcNMjYwODE0MTI1OTU3WhcNMjYxMTEyMTI1OTU2WjASMRAwDgYDVQQD EwdzeXQuY29tMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnBaxN4mG Ix9RGbBoRppPYGcbRSDWBn1lmhuVr+vLbQsntN/i0tWYZMj0kewonEaK504nCWBI akkjsEzEeg18OrPTE1fLwYNelagx5WgsjDI4Ui22DzhWxD/6W5XfQEWFaVoDDRZ/ ZqvltifOp3t35h28fqMwDRC1H3jzvCt52rgbo31H7vQSc2426xNrE8BOaXkGgFcq pPcHz6VJTc3kCJF3vTrA68dV9V0AVpqT2yaZ3b9N0w0BZXWaWJAzJgv4nFtN+Int /XcoNM4xPn8mp91bJAXmjLcCa6PgzrIxd5SeboUUUvDOSZw8XRnqD5uvpV799jSv H75U7KgEuWdPLwIDAQABo4ICMjCCAi4wDgYDVR0PAQH/BAQDAgWgMBMGA1UdJQQM MAoGCCsGAQUFBwMBMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFKT6ir0zo05jW/rh bhHbdlHLjTihMB8GA1UdIwQYMBaAFEAVLSZ57TIgnt+ach3WMh+BDIEMMDMGCCsG AQUFBwEBBCcwJTAjBggrBgEFBQcwAoYXaHR0cDovL3lyMi5pLmxlbmNyLm9yZy8w MAYDVR0RBCkwJ4IHc3l0LmNvbYIPd2VibWFpbC5zeXQuY29tggt3d3cuc3l0LmNv bTATBgNVHSAEDDAKMAgGBmeBDAECATAuBgNVHR8EJzAlMCOgIaAfhh1odHRwOi8v eXIyLmMubGVuY3Iub3JnLzY5LmNybDCCAQsGCisGAQQB1nkCBAIEgfwEgfkA9wB3 ANdtfRDRp/V3wsfpX9cAv/mCyTNaZeHQswFzF8DIxWl3AAABoACRJwEAAAQDAEgw RgIhAJG6tVZMKvjS1wK30DlNAnvXR89bSBjmk9GDu9CxtIFNAiEAsSQSi9Yf0jis uCDfuSb8aCvs8VZKdGWse2YtN4z7xGwAfAAm42RuWGkhI7w0P0ckNZs3ks0kWojY FdOTM/2ZGKtHIwAAAaAAkSGMAAgAAAUANKUiWgQDAEUwQwIgOA5AWCJgQB3gvfAP 4pHkjxEZ8PF5lLZ7snxH0yj15ywCHxros/MIxNoIP4xJBGN12VEjHGMGwk9FjGAl maTadnowDQYJKoZIhvcNAQELBQADggEBABvFvSKpiwE9772VKfbEZOq6XOxz5V+F d/8eSWCR5SKomwzaaDlKRU4IMkj3h3bROdB9QrgHaHzfXixl2b2w/CwazxCBeVQn +OxE+tXRvW+geAw27SWOc+Rr/Y99egfEtEFXbM6lihrSLi/kGIBAXzi4HVoTc6Bh lEcwrxhRWmueqAPuqUN5lYyW42MERqVn8jvUKVXRFb6EWbgL875/bmUICZt4Op3G 7m/pAlMYJY3MuPf2HQIKI1o5Y9stCC2Bdr2wY96M9Mz2yMywyyZeeQQUHwaP6h68 oPuZoEPMerhZ5tQ0C8hxWf1LPkWg+P2H7eJxe4Tk028/mM5qU5L058I= -----END CERTIFICATE-----
Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-04T09:26:01+00:00
Server-presented chain · 2 additional certificates
Chain certificate 1
- Subject
- C=US O=Let's Encrypt CN=YR2
- 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
- 699
- Serial (hex)
- 4EBD24947E24D394802D84A52FD5B319
- Signature
- RSA-SHA256
- Public key
- RSA 2048
Subject alternative names (SAN)
No SAN extension was presented.
SHA-256 fingerprint
23:8B:85:A0:09:9C:65:B9:70:47:7D:57:24:F1:A1:D4:75:CE:50:58:CF:FE:4E:FA:87:33:89:9B:DB:86:3C:47
Certificate extensions & PEM
- keyUsage
- Digital Signature, Certificate Sign, CRL Sign
- extendedKeyUsage
- TLS Web Server Authentication
- basicConstraints
- CA:TRUE, pathlen:0
- subjectKeyIdentifier
- 40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
- 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----- MIIE2jCCAsKgAwIBAgIQTr0klH4k05SALYSlL9WzGTANBgkqhkiG9w0BAQsFADAu MQswCQYDVQQGEwJVUzENMAsGA1UEChMESVNSRzEQMA4GA1UEAxMHUm9vdCBZUjAe Fw0yNTA5MDMwMDAwMDBaFw0yODA5MDIyMzU5NTlaMDMxCzAJBgNVBAYTAlVTMRYw FAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQDEwNZUjIwggEiMA0GCSqGSIb3 DQEBAQUAA4IBDwAwggEKAoIBAQDZ0LxwBppqh84luqMerV/eeL/fXQ7mLQQv1Lnp WKZbyvGpx6wh6AfnslAnF6ewTkcHA+gSOoBvm3Dfm06AuGiF+KRut4fAcowqnAQQ CW98+QPP/eOv/wug7Iyk4NkOxf2I6g2f55T6nJoOTLFcukeRq80JGQEYan+dPFr9 OGUgQK2hGKgNkW87pappsOAuUJcroYhRt5uUis4qaZireiseu32gzDJNBAiKtsvd 6HX4v25bpkRNcS/B/Gtc9kVbUpD+2PLPxdei3Tim55k4tfAEXwD2qyiPTxrTNq6l N+AMr5g2c1dNqkOTwjxeV6L5lpP1rGiYvLnRaPlOqyZRPW+5AgMBAAGjge4wgesw DgYDVR0PAQH/BAQDAgGGMBMGA1UdJQQMMAoGCCsGAQUFBwMBMBIGA1UdEwEB/wQI MAYBAf8CAQAwHQYDVR0OBBYEFEAVLSZ57TIgnt+ach3WMh+BDIEMMB8GA1UdIwQY MBaAFN7nW2DQIm1AKH0/DQH+pLVStFGUMDIGCCsGAQUFBwEBBCYwJDAiBggrBgEF BQcwAoYWaHR0cDovL3lyLmkubGVuY3Iub3JnLzATBgNVHSAEDDAKMAgGBmeBDAEC ATAnBgNVHR8EIDAeMBygGqAYhhZodHRwOi8veXIuYy5sZW5jci5vcmcvMA0GCSqG SIb3DQEBCwUAA4ICAQB0ZUQWZ9/Yn9COEpo+JfecMnB0h0vwDm/M66IqXqw3LoaL mx9lZvRTeDIS67PUeI3yCA2W6PKRD0/FE/G57lOmS+Xy5AaaL00ICGOqjNcCaMWW 8o8nevHOd4i4lqgtznE/28QwlcdJyF8yBiWHpnyjhEpmNWJURgOCOg2xpwRMBCsj MScqYPtOhBeuYQvSwAEeTML2Ukh6uGuX4E14q65Ja8cdjF5bAldnP1eE4FBaAwsZ G2fOqqrKV03Y85Nw2btedP1AtliQuJZs/Jo/gXxXdc7LrH3McgnpnbTiAncX7yES hP6kzQejllqMCIt52HOjxDGWafS7Xw+DKwqmH+Eqy8dcbOuag/1AYlQoKNVK3F5q Hh6tEDiMqQcLIibGKteE6iHo4A/bIScbzrhXUYuism42ZYzmc48FMVIH3qy4L84E TdAH2gtxw0PAhvRVXp8HP7wfngpzsN/8xOTpeRSbM4+Qbc56G6+Bifmv6sk1ieQb NA3wJdl4DDUuQSV8hBgx6zoI1ZSGORprDFux7c6rhc77QZMSRrEgomBeklervEve 86ylWmZ3WWHV6RLMi8xNvjd71r4EPIGgY7BZU/VPBkq+uA7Gb6mbJnFgV43uh3xy LRFgxIAphIukwTGSMZZR+AI+Qnp0BYTWovHXozOf3H8r6hozEoT02JHn0AeTfA== -----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
- 2160
- 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----- MIIF9DCCA9ygAwIBAgIRAPJLbRf52a18scn+p4eCaZ8wDQYJKoZIhvcNAQELBQAw TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMjYwNTEzMDAwMDAw WhcNMzIwOTAyMjM1OTU5WjAuMQswCQYDVQQGEwJVUzENMAsGA1UEChMESVNSRzEQ MA4GA1UEAxMHUm9vdCBZUjCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIB ANvGJnN78CTJdWL3+eGfsLN5TrNBJs+VH9hRXqRbwxu9sGNiB0BD1fcOxbSUQCJI M1xE13Db+5Cw1w0s0EBYsvuIP/6joF0w8cuImbgR1OGgYbSQ4OpzI+DG8SGuTlcE 873OCS+kh3srlo6vl43M5OJg4Aeo1sfHp6kTJDoIiFBNJAY+OKfX/FUvYKuhjT+n o49lmqmupSBI5PkBQiqrEGtWU5uxU/cQWHGu8jSjFBznZqvbNPLMXMLFxCb3WTfr JBXXjqvWG+v4bjzxjjeAtOlU7qarRDvNOyAuQYLln904M+faKx8hnLCpJ15ZqaEg cNlY+9MMWcC5yvL2A2j3l9+2buggZX+dOE91zYmIdawTvSZuVvlbRrAlLxIB6pwM BjneXCjYQ8+3BCCjssbSNpZU3hTcBDdhfAlEDlYr6pEatnMdmDT5BqnKC92bd0Eh M1fbLHioLccLCuievT8ZkPhZrq7Mii7gNXAcUEAR8+lzYal+9zTg7C5DALyVOeG/ CqfRAMn1KSHCR0NSA6P8tn/mGRlnCct5rtVCLnVySVpU6H1qGg3DgTOuskf8eahT MiYbI5ezPJmO5ertalskQ1utp74+eDy92PI4ftHKTbq9IWhH4YZKh3WnJEIt+oQv lYZbY8tpEroKrFB6PFGzrJIDRyts4HqvuH52RFj2zv/BAgMBAAGjgeswgegwDgYD VR0PAQH/BAQDAgEGMBMGA1UdJQQMMAoGCCsGAQUFBwMBMA8GA1UdEwEB/wQFMAMB Af8wHQYDVR0OBBYEFN7nW2DQIm1AKH0/DQH+pLVStFGUMB8GA1UdIwQYMBaAFHm0 WeZ7tuXkAXOACIjIGlj26ZtuMDIGCCsGAQUFBwEBBCYwJDAiBggrBgEFBQcwAoYW aHR0cDovL3gxLmkubGVuY3Iub3JnLzATBgNVHSAEDDAKMAgGBmeBDAECATAnBgNV HR8EIDAeMBygGqAYhhZodHRwOi8veDEuYy5sZW5jci5vcmcvMA0GCSqGSIb3DQEB CwUAA4ICAQA8spSI95KKfn2W6GMmDpHBJSPaLbsS3W93cijJCRCYAc1fsJgL1FIL 7C0C9ecPOdcwB2fi0Dk2p94j9iTJCxmt5CFSKLRWwnXT2MMSXexVxqoVB79BdWPx VXETkVme/qYSAuKVHh5Ps+5BixgmwS1JkjSAc+MfrUbNssVEEnH0aEiAh+rotXAV JSP/Ye7LJPEwD9DWG72vVWbhAcuOf5OLjz57Ctk7MgQHynZ7+PlHJtajroCaIbtC r6tcZZaAwUQm+jQyeWdV+2hv9deOYFmKeQyjjcSrN5Nadrw+L9DZJLbA1HqeNvLh BgqpP0fvJq2N6EtD574N6eMI7uMsJTnji2UDz9el5XLSv9fqJMuDQtYVb2oTNoKp oUqhxPVC0aq4eG5MESaIdn8b5ZGSSeAJLMHXljEdlNza+ncfkviXk1POLnnFdvx8 /gk6M374WbLWFXw8N141B/Rl/tINGfl1TxOIiqtiMYkL02RSGb1kq34BL9NPP27z RGMuHGnzS3hFIrRTfKxrzUZ9RzQWzEG3K6fJ3r2nqSltkeytis9DIBoFY9VmVyjL M71DMi+y1+TRSJVClEMwvA4yL++7q9XZx5r5wBRWB4kQTKH5qyoZnDw7iiuh1lID yDFx8r7i9vIJU5HS3moZLkYWAOilMaV9N56A9Bgb6dNcHkvg3NoaYA== -----END CERTIFICATE-----
One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.