envirostudies.org
Issued by Sectigo RSA Domain Validation Secure Server CA
About this certificate
This digital certificate with serial number 3f:8d:8e:44:61:48:01:ba:15:c8:74:8d:71:72:32:ee 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:
- DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
- Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
- Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)
Certificate Subject
CN=envirostudies.org
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): 3f:8d:8e:44:61:48:01:ba:15:c8:74:8d:71:72:32:eeSerial Number (int): 84476363111288976962451039818238538478
Serial Number lenght: 126 bits, 16 octets
SubjectKeyId: 1d:e1:d3:37:cf:96:5a:c7:24:61:b4:9d:9b:b3:22:46:2a:63:f5:90
AuthorityKeyId: 8d:8c:5e:c4:54:ad:8a:e1:77:e9:9b:f9:9b:05:e1:b8:01:8d:61:e1
Fingerprint (sha1): 8c:74:04:ba:8e:1a:f7:22:bc:88:be:ce:83:60:0c:b7:46:61:e2:5d
Fingerprint (sha256): 65:46:10:52:0c:dc:f8:7b:c9:2d:e3:56:bf:cc:fe:3b:3f:1b:90:90:e6:6e:26:43:a5:9f:28:0f:0c:49:d2:42
Issuing Certificate URL: http://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt
Revocation information
OCSP Server: http://ocsp.sectigo.comCheck the revocation status for certificate envirostudies.org
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for envirostudies.org
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
envirostudies.org
www.envirostudies.org
www.envirostudies.org
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Certificate
The complete raw certificate details for envirostudies.org in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFyDCCBLCgAwIBAgIQP42ORGFIAboVyHSNcXIy7jANBgkqhkiG9w0BAQsFADCB jzELMAkGA1UEBhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4G A1UEBxMHU2FsZm9yZDEYMBYGA1UEChMPU2VjdGlnbyBMaW1pdGVkMTcwNQYDVQQD Ey5TZWN0aWdvIFJTQSBEb21haW4gVmFsaWRhdGlvbiBTZWN1cmUgU2VydmVyIENB MB4XDTIzMTEyNjAwMDAwMFoXDTI0MDIyNDIzNTk1OVowHDEaMBgGA1UEAxMRZW52 aXJvc3R1ZGllcy5vcmcwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCR /dxR2/6WtyJBXdFZaFfu6eV7hwuMtDyzi0ZHG9yhClgLofywrNswBCTOGfXtUA2Y DCCiKGY3mc2jjBDe4px3QpN7Iv4sfgTdRB26BzPoALoNLLu693t0SmJq9ltAYNl2 RVYtbbBmuPsADwiB/lHqewT/KW2KxsagkePiuMyy2l51/zUlumwYnsypc5fwm6kg 1SKSSxp2CJBl1uk0X0ZspG3s90y+64FCH8JdcNr2MsCp7EeEd95TEBfij/UtiOlb m+pNb/ObIBJOFIxh/8oT6r7HwOWKBoNrVHBRTmIDCaWTJBbIlzTrnelXHdIym7Sg tWqEFbaLrgVvcwYZJVRJAgMBAAGjggKQMIICjDAfBgNVHSMEGDAWgBSNjF7EVK2K 4Xfpm/mbBeG4AY1h4TAdBgNVHQ4EFgQUHeHTN8+WWsckYbSdm7MiRipj9ZAwDgYD VR0PAQH/BAQDAgWgMAwGA1UdEwEB/wQCMAAwHQYDVR0lBBYwFAYIKwYBBQUHAwEG CCsGAQUFBwMCMEkGA1UdIARCMEAwNAYLKwYBBAGyMQECAgcwJTAjBggrBgEFBQcC ARYXaHR0cHM6Ly9zZWN0aWdvLmNvbS9DUFMwCAYGZ4EMAQIBMIGEBggrBgEFBQcB AQR4MHYwTwYIKwYBBQUHMAKGQ2h0dHA6Ly9jcnQuc2VjdGlnby5jb20vU2VjdGln b1JTQURvbWFpblZhbGlkYXRpb25TZWN1cmVTZXJ2ZXJDQS5jcnQwIwYIKwYBBQUH MAGGF2h0dHA6Ly9vY3NwLnNlY3RpZ28uY29tMIIBBAYKKwYBBAHWeQIEAgSB9QSB 8gDwAHYAdv+IPwq2+5VRwmHM9Ye6NLSkzbsp3GhCCp/mZ0xaOnQAAAGMCsrX/QAA BAMARzBFAiEA6VfkvnkJAd5zn/iK//RDMLF924MOOBaSoVhM4mJ4Hs0CICoJ+f/d PgDThZVbGk37c7vOYObxnysWNxpWGaD32UJqAHYAO1N3dT4tuYBOizBbBv5AO2fY T8P0x70ADS1yb+H61BcAAAGMCsrYIAAABAMARzBFAiEAxKNlAJLNp2pfmLxqqERR b1FFu5c9KMviL/FzN4cBJSACIGvqWPjK3EU7bxvBBwS7R6rbyDU85urPgzjolv7A oDkhMDMGA1UdEQQsMCqCEWVudmlyb3N0dWRpZXMub3JnghV3d3cuZW52aXJvc3R1 ZGllcy5vcmcwDQYJKoZIhvcNAQELBQADggEBANKqXBatYH7S3LnAFWWYssVvTsbi Q2+y1cWK3c5uLUpnNA5a/bjpcUkwORNmV9E6vVblFPUa2jHdGJK4hc6aTUBJs04A 14FOj9Lh67XVgnbo3KMaeYRdd31uXvlb9KJLT0Xj3BaK0SC/K/MEoSWGMFYFTb3G bBO3xpuR7Ml+7hA1LZvz8u7CX22M6CvgoLO6KMSzalPZKr3NtN+SpRv49OprQAi7 t42UmHunIL5+tTzh6G7NPcx+4h7o8/FVEVndzuIBSdh3lbWTjM1bdk4jlhGUKssS xf8mPyavMfdZAmp9VIAULN/nYVIVZTu7Fws7/A/VMISBhm30SPVMmhnKy1w= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAkf3cUdv+lrciQV3RWWhX 7unle4cLjLQ8s4tGRxvcoQpYC6H8sKzbMAQkzhn17VANmAwgoihmN5nNo4wQ3uKc d0KTeyL+LH4E3UQdugcz6AC6DSy7uvd7dEpiavZbQGDZdkVWLW2wZrj7AA8Igf5R 6nsE/yltisbGoJHj4rjMstpedf81JbpsGJ7MqXOX8JupINUikksadgiQZdbpNF9G bKRt7PdMvuuBQh/CXXDa9jLAqexHhHfeUxAX4o/1LYjpW5vqTW/zmyASThSMYf/K E+q+x8DligaDa1RwUU5iAwmlkyQWyJc0653pVx3SMpu0oLVqhBW2i64Fb3MGGSVU SQIDAQAB -----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 84476363111288976962451039818238538478 . . . . . . . . [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 2023-11-26 00:00:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-24 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 'envirostudies.org' . . . . . . . . [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 18429737559456641803611714750615578808005566587017159854349912602261945506781745339406646675299394468033702970337349945133465674488443260323164319022504470615612216751117162257424995648679128664128250537399644811099562623636615577713297750197282030204758634921961450248386268939701371029095067215018370849732040353742928824587157091959565335272060029415148057011443296389245793709534942194949255070221486497136376092012434924927076060088652117267179718036444145483763102339290401198742324033125107470191183986108552463358642082235763269595095517728054368029245886954916018545748538470155956419279098127499818279720009 . . . . . . . . . . . . . . . . . . . . [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) 1de1d337cf965ac72461b49d9bb322462a63f590 . . . . . . . . . . . . . . . . [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 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) 00f000760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018c0acad7fd0000040300473045022100e957e4be790901de739ff88afff44330b17ddb830e381692a1584ce262781ecd02202a09f9ffdd3e00d385955b1a4dfb73bbce60e6f19f2b16371a5619a0f7d9426a0076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c0acad8200000040300473045022100c4a3650092cda76a5f98bc6aa844516f5145bb973d28cbe22ff173378701252002206bea58f8cadc453b6f1bc10704bb47aadbc8353ce6eacf8338e896fec0a03921 . . . . . . . . . . . . . . . . [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 (44 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'envirostudies.org' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.envirostudies.org' . . . . [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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