classroom.tomlinson.center
Issued by Sectigo RSA Domain Validation Secure Server CA
About this certificate
This digital certificate with serial number 2c:da:38:e6:10:0d:c0:b7:6e:32:28:75:f9:4e:cb:5b was issued on by Sectigo Limited.
With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.
We have idenified some issues with this certificate:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=classroom.tomlinson.center
Sectigo Limited
Organization:
Sectigo Limited
State / Province:
Greater Manchester
Locality: Salford
Country: GB
Locality: Salford
Country: GB
This certificate has expire since
Certificate Details
Serial Number (hex): 2c:da:38:e6:10:0d:c0:b7:6e:32:28:75:f9:4e:cb:5bSerial Number (int): 59619106572080459875984387733048970075
Serial Number lenght: 126 bits, 16 octets
SubjectKeyId: 82:52:0b:66:dc:78:80:a4:6e:ed:84:99:60:76:a1:d8:01:20:01:a7
AuthorityKeyId: 8d:8c:5e:c4:54:ad:8a:e1:77:e9:9b:f9:9b:05:e1:b8:01:8d:61:e1
Fingerprint (sha1): 71:7d:c1:bb:d8:bb:74:ef:09:21:24:05:63:5e:77:71:5e:3c:f5:b4
Fingerprint (sha256): 14:1b:ce:6b:5a:90:c6:9f:fa:f6:5e:b8:ce:c0:c2:a7:b7:83:1c:45:8a:34:18:06:66:02:9b:fb:e0:5a:d1:82
Issuing Certificate URL: http://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt
Revocation information
OCSP Server: http://ocsp.sectigo.comCheck the revocation status for certificate classroom.tomlinson.center
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for classroom.tomlinson.center
Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Digital Signature
Key Encipherment
Extended Key Usages
Server Authentication
Client Authentication
Extensions
9 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
classroom.tomlinson.center
www.classroom.tomlinson.center
www.classroom.tomlinson.center
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Certificate
The complete raw certificate details for classroom.tomlinson.center in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIF4zCCBMugAwIBAgIQLNo45hANwLduMih1+U7LWzANBgkqhkiG9w0BAQsFADCB jzELMAkGA1UEBhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4G A1UEBxMHU2FsZm9yZDEYMBYGA1UEChMPU2VjdGlnbyBMaW1pdGVkMTcwNQYDVQQD Ey5TZWN0aWdvIFJTQSBEb21haW4gVmFsaWRhdGlvbiBTZWN1cmUgU2VydmVyIENB MB4XDTE5MDMyMjAwMDAwMFoXDTE5MDYyMDIzNTk1OVowJTEjMCEGA1UEAxMaY2xh c3Nyb29tLnRvbWxpbnNvbi5jZW50ZXIwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAw ggEKAoIBAQCYkYtMypHLiCC9E1JYhRFEa4Pw659cy1kOMUbvT2s7RO/AM+tI8AgH hVDGgRGpaHQYBeF3MZGR5vswap5vqycq7eJMsj61dJSx1Y4RT3LEEnScHkdbUWc+ 0XEOl49Bx9C7PIAPYC1n7IsxGuU3gt2Ar4b/c/Zh/t8shKloMokX8ZChk9xNEBpN Pr55dZzOquq478NxLOsFSPdoZDQkUTf/nSjLSVlgjLG2rLbptOyYoxadxPt4y+fv kkTS4/BL+cKb8FZt+rIDKFkBH0A1f3/QtuSRzDmWoSkLz3U7Z8/JXBfCPs53MnW0 /7efNfI6X9oAo5gPfDoVHWeIQ7jdG1OfAgMBAAGjggKiMIICnjAfBgNVHSMEGDAW gBSNjF7EVK2K4Xfpm/mbBeG4AY1h4TAdBgNVHQ4EFgQUglILZtx4gKRu7YSZYHah 2AEgAacwDgYDVR0PAQH/BAQDAgWgMAwGA1UdEwEB/wQCMAAwHQYDVR0lBBYwFAYI KwYBBQUHAwEGCCsGAQUFBwMCMEkGA1UdIARCMEAwNAYLKwYBBAGyMQECAgcwJTAj BggrBgEFBQcCARYXaHR0cHM6Ly9zZWN0aWdvLmNvbS9DUFMwCAYGZ4EMAQIBMIGE BggrBgEFBQcBAQR4MHYwTwYIKwYBBQUHMAKGQ2h0dHA6Ly9jcnQuc2VjdGlnby5j b20vU2VjdGlnb1JTQURvbWFpblZhbGlkYXRpb25TZWN1cmVTZXJ2ZXJDQS5jcnQw IwYIKwYBBQUHMAGGF2h0dHA6Ly9vY3NwLnNlY3RpZ28uY29tMEUGA1UdEQQ+MDyC GmNsYXNzcm9vbS50b21saW5zb24uY2VudGVygh53d3cuY2xhc3Nyb29tLnRvbWxp bnNvbi5jZW50ZXIwggEEBgorBgEEAdZ5AgQCBIH1BIHyAPAAdwC72d+8H4pxtZOU I5eqkntHOFeVCqtS6BqQlmQ2jh7RhQAAAWmjIKegAAAEAwBIMEYCIQCsLeB4FWeb xFgyng7oquTHa7TW3yAXu35tz3Xj0Q4c9QIhAKgjnsWu4vgPdpwhit/P4HQT4pQe zh61xyAo7sAVb5YNAHUAdH7agzGtMxCRIZzOJU9CcMK//V5CIAjGNzV55hB7zFYA AAFpoyCnygAABAMARjBEAiBAd7jU3+DLvqxtaxE1BwvEFYskZ0mtuIC+Yrk5hVB/ zAIgJs5rpZ6MvMyZK617TDP9nDEuTxspD3Sho+j8mqPgI7wwDQYJKoZIhvcNAQEL BQADggEBAJ/q2vC22F6R7drioS5Q/ox/mpgBsPLYMtkZASzt4M68NxopYB6fInYn ud5qfTkmm3pv8oNU8NnZkP270O+uu0INKhFJ140hhuNNkonwoa8hEqhLbW60VK0a OnurIG+rs/MUiRRiGg9VuYq1Y3oq8KUlYVExkRLKzWxKqRkrAw+ZrCpaFTYiGVKf qqCRr9C14ET/hxpGrDb4Kf1OWUhxE1SRwUEjJn7JgwFlNgPKver5yV8TQ55TKx96 twDdNQYYGahCV9TySl9O/S/YW0fjaIBiFAKloLEMJL2NnsL2ymim6fMFSMbJ6mVr 2Tz3HD3+rghj8sgQEyUgqDXB6r6Laxk= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmJGLTMqRy4ggvRNSWIUR RGuD8OufXMtZDjFG709rO0TvwDPrSPAIB4VQxoERqWh0GAXhdzGRkeb7MGqeb6sn Ku3iTLI+tXSUsdWOEU9yxBJ0nB5HW1FnPtFxDpePQcfQuzyAD2AtZ+yLMRrlN4Ld gK+G/3P2Yf7fLISpaDKJF/GQoZPcTRAaTT6+eXWczqrquO/DcSzrBUj3aGQ0JFE3 /50oy0lZYIyxtqy26bTsmKMWncT7eMvn75JE0uPwS/nCm/BWbfqyAyhZAR9ANX9/ 0Lbkkcw5lqEpC891O2fPyVwXwj7OdzJ1tP+3nzXyOl/aAKOYD3w6FR1niEO43RtT nwIDAQAB -----END PUBLIC KEY-----
ASN.1 decoded
[c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2 . . . . . . . . [c:0|t:2|false] INTEGER 59619106572080459875984387733048970075 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'GB' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.8 (stateOrProvinceName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Greater Manchester' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.7 (localityName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Salford' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Sectigo Limited' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Sectigo RSA Domain Validation Secure Server CA' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-03-22 00:00:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-06-20 23:59:59 +0000 UTC . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'classroom.tomlinson.center' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption) . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2160 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 19259992845440358284441881440622512231314836851429191308716177531603109793094338150347382326900215843964941107720200563602314758538135972504545058068065690319092372112250563675214675547079592164695397190417312974469185479935111182061177303596793270959420578260255887083521889655949106870348353447042087201546090154948584467065789942611484310552863623855652705450966993536115563461994592000936663766692883900153315106063057802532747251088388609476639653910804788805935974817529800721704761476465957586195773043172677416812290812662778127938118941053729093977035627280304742618110365840963449991886343756896860427211679 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537 . . . . . . . . [c:2|t:3|true] ORAddress . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 8d8c5ec454ad8ae177e99bf99b05e1b8018d61e1 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes) 82520b66dc7880a46eed84996076a1d8012001a7 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits) 05a0 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (66 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.6449.1.2.2.7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'https://sectigo.com/CPS' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (120 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.sectigo.com' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (62 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'classroom.tomlinson.center' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.classroom.tomlinson.center' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007700bbd9dfbc1f8a71b593942397aa927b473857950aab52e81a909664368e1ed18500000169a320a7a00000040300483046022100ac2de07815679bc458329e0ee8aae4c76bb4d6df2017bb7e6dcf75e3d10e1cf5022100a8239ec5aee2f80f769c218adfcfe07413e2941ece1eb5c72028eec0156f960d007500747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc5600000169a320a7ca000004030046304402204077b8d4dfe0cbbeac6d6b1135070bc4158b246749adb880be62b93985507fcc022026ce6ba59e8cbccc992bad7b4c33fd9c312e4f1b290f74a1a3e8fc9aa3e023bc . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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