mail.grade-rc.de
Issued by Let's Encrypt Authority X1
About this certificate
This digital certificate with serial number 01:5f:9c:19:22:69:1d:9d:b1:37:1c:40:ec:af:5a:17:5e:0e was issued on by Let's Encrypt.
With 3 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=mail.grade-rc.de
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 01:5f:9c:19:22:69:1d:9d:b1:37:1c:40:ec:af:5a:17:5e:0eSerial Number (int): 119646600861943360214176717016915387047438
Serial Number lenght: 137 bits, 18 octets
SubjectKeyId: 20:7a:cc:f8:ef:74:3a:ec:4e:28:a4:00:0d:db:ba:57:59:07:9e:c2
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 98:cc:ad:57:53:e8:37:85:28:ef:b7:78:c3:03:b7:5c:e3:cf:7d:41
Fingerprint (sha256): 0a:aa:67:14:cb:d4:0c:0d:be:06:0a:98:51:95:9a:ec:14:07:09:95:55:ec:5a:71:d5:a7:39:e2:a6:3c:8b:e4
Issuing Certificate URL: http://cert.int-x1.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x1.letsencrypt.org/Check the revocation status for certificate mail.grade-rc.de
3
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for mail.grade-rc.de
Public Key Algorithm
RSA
Key Size
4096
Signature Algorithm
SHA256 with RSA
Key Usage
Digital Signature
Key Encipherment
Extended Key Usages
Server Authentication
Client Authentication
Extensions
8 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
mail.grade-rc.de
mail.grade.uni-bonn.de
mail.cam-group.org
mail.grade.uni-bonn.de
mail.cam-group.org
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grade-rc.de
Certificate
The complete raw certificate details for mail.grade-rc.de in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGMDCCBRigAwIBAgISAV+cGSJpHZ2xNxxA7K9aF14OMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMTAeFw0xNTEyMjIxMTIxMDBaFw0x NjAzMjExMTIxMDBaMBsxGTAXBgNVBAMTEG1haWwuZ3JhZGUtcmMuZGUwggIiMA0G CSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQD0/yUqEJJCTiFelQ2Z0dogXGUkKo9G NW14qZJLpIfAk8k/7LwM5kGcZ9Vl020QZ6OY7qA1p7Y+F+d4mSCgYh0Lg44bDspV ARBAJfId36FD4TUx+xv1QGIO+GC7a8CvsqkROa6VqwfoJQnstLJCrrAWrgrVs6Oe hfXTNkGXZuHcXXcxSoRVrmk9Y7k+ngTgc3w/4u/DjAu1PCjCcuMtauc6L2STodOz f5u8rXhVt/lZdI1MaWKkxD0X4u9MXNklKzk5fhr2atyk00v2W8yToQLHulqTi9DE tJzfE3PBM2LxHfxG1Y4fjMur3mmL7x2qAwqUU5+zFul3DZz9Ghlh2AOuhSx/RF6x LUPdAie3mrVyqU/gVxnWgGssOjbHQdMFsnmtvov7bZ6zBbQI9/GqCWHiCTtdSmHP ezzwIN/5TXgC0wJfxqJuG7jyWVoyAUoEBbX5ENNGVLX3teSJ4E4BHJQKp39iIbW8 Cdli6rAJMXot2UuqVfdjb+91IQUCfG27DntoC0UMxb6gULoZPI86xkp7AfuFCiYn wERysv/5eHFMOBL3X9K08n1GorkFB1vj1wxPQqjpRcQnfWCi5jZzfM14xFB79SVW q4AgpphwuAjRp+O/xdrVN+6oV+XERAwTqjS/zIy6dE2o2DRls8WEU8JTwP0Z40li j7LeWubNpQO9XQIDAQABo4ICPTCCAjkwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQW MBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBQg esz473Q67E4opAAN27pXWQeewjAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv 86jsoTBwBggrBgEFBQcBAQRkMGIwLwYIKwYBBQUHMAGGI2h0dHA6Ly9vY3NwLmlu dC14MS5sZXRzZW5jcnlwdC5vcmcvMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5p bnQteDEubGV0c2VuY3J5cHQub3JnLzBHBgNVHREEQDA+ghBtYWlsLmdyYWRlLXJj LmRlghZtYWlsLmdyYWRlLnVuaS1ib25uLmRlghJtYWlsLmNhbS1ncm91cC5vcmcw gf4GA1UdIASB9jCB8zAIBgZngQwBAgEwgeYGCysGAQQBgt8TAQEBMIHWMCYGCCsG AQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCBqwYIKwYBBQUHAgIw gZ4MgZtUaGlzIENlcnRpZmljYXRlIG1heSBvbmx5IGJlIHJlbGllZCB1cG9uIGJ5 IFJlbHlpbmcgUGFydGllcyBhbmQgb25seSBpbiBhY2NvcmRhbmNlIHdpdGggdGhl IENlcnRpZmljYXRlIFBvbGljeSBmb3VuZCBhdCBodHRwczovL2xldHNlbmNyeXB0 Lm9yZy9yZXBvc2l0b3J5LzANBgkqhkiG9w0BAQsFAAOCAQEAJE1IsYJCPIXiHeyd VRUwiCxE7vKzYmppKQga9W/hLg1LeyPstRqeO2x71LbmJ7APKdNnxxqO0Akp3JmN UTnr73fy2eUlnL+zCC7lNARg2CcwzvBeE8HtLi+0wboam2Frddtb687fiifP9zBQ iS43uAfhozNoWzZy7HdOVKBD1vrO4fuwwSsf6YJUOAsKDd8G9jjJqd9N5rACc3Ho JTcgcd0pd6iYaNPwipYruW2H1iICkfNVNpDud/5tAChDHH8H6fdPJANTvXZduvK+ WNvTww6RNvJ7MKYQTwgFNY2WA5+ebi5eSBu+PP76q2U+1jwd1mXJLFR6uIjvsW/5 EFSiug== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA9P8lKhCSQk4hXpUNmdHa IFxlJCqPRjVteKmSS6SHwJPJP+y8DOZBnGfVZdNtEGejmO6gNae2PhfneJkgoGId C4OOGw7KVQEQQCXyHd+hQ+E1Mfsb9UBiDvhgu2vAr7KpETmulasH6CUJ7LSyQq6w Fq4K1bOjnoX10zZBl2bh3F13MUqEVa5pPWO5Pp4E4HN8P+Lvw4wLtTwownLjLWrn Oi9kk6HTs3+bvK14Vbf5WXSNTGlipMQ9F+LvTFzZJSs5OX4a9mrcpNNL9lvMk6EC x7pak4vQxLSc3xNzwTNi8R38RtWOH4zLq95pi+8dqgMKlFOfsxbpdw2c/RoZYdgD roUsf0ResS1D3QInt5q1cqlP4FcZ1oBrLDo2x0HTBbJ5rb6L+22eswW0CPfxqglh 4gk7XUphz3s88CDf+U14AtMCX8aibhu48llaMgFKBAW1+RDTRlS197XkieBOARyU Cqd/YiG1vAnZYuqwCTF6LdlLqlX3Y2/vdSEFAnxtuw57aAtFDMW+oFC6GTyPOsZK ewH7hQomJ8BEcrL/+XhxTDgS91/StPJ9RqK5BQdb49cMT0Ko6UXEJ31gouY2c3zN eMRQe/UlVquAIKaYcLgI0afjv8Xa1TfuqFflxEQME6o0v8yMunRNqNg0ZbPFhFPC U8D9GeNJYo+y3lrmzaUDvV0CAwEAAQ== -----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 119646600861943360214176717016915387047438 . . . . . . . . [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 'US' . . . . . . . . . . . . [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 'Let's Encrypt' . . . . . . . . . . . . [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 'Let's Encrypt Authority X1' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2015-12-22 11:21:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-03-21 11:21:00 +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 'mail.grade-rc.de' . . . . . . . . [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 (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 999499174049838344611163662607461415026265171174113291119895723245201379144907544446886920281035326613773934131336795239217361215438354884028573350008982629417125121883779944270233264264396930422040351855065244585072787382374078032020488955997448881885793064708071068413559976501532393944448491191641789509535014268299780005218204796330069571008616629573105756909168328529321331739836114219575363291347114158038732883224183780720157806524228543354992350655677277846632617514216846835704913561736946754526394277493994807295080158780351117211243690314273083890931899355494793449306476715777506502314551795849503583030281242601868387425516521112621712195663384859206156746128680965284806692015890414464065029547502847859238352209703810625914335330303106859494744261081278721634061634735725827877882376412263417270685282173735436024594760548371680671118512144413571678480025859471461186755316925302123084142518667228388755789828522183484535732922237955051741856687783245689161911686869507895740533760069054893214155206109249799008569753566542488052863909830517405379108529639394254357273459677412967496909863817054617689718900898503801265894396024455718617776243925522844771603490715457987303008446729148583842198776964997345639311588701 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.15 (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 2.5.29.37 (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 2.5.29.19 (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 2.5.29.14 (subjectKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes) 207accf8ef743aec4e28a4000ddbba5759079ec2 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1 . . . . . . . . . . . . . . . . [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 (100 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.int-x1.letsencrypt.org/' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://cert.int-x1.letsencrypt.org/' . . . . . . . . . . . . . . . . [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 (64 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.grade-rc.de' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.grade.uni-bonn.de' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.cam-group.org' . . . . . . . . . . . . . . . . [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 (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 'http://cps.letsencrypt.org' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/' . . . . [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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