admin.phone.cam.ac.uk
Issued by R3
About this certificate
This digital certificate with serial number 03:dd:5f:7b:76:4e:81:32:e3:d7:41:16:bb:ea:3d:0b:68:84 was issued on by Let's Encrypt.
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=admin.phone.cam.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:dd:5f:7b:76:4e:81:32:e3:d7:41:16:bb:ea:3d:0b:68:84Serial Number (int): 336666178596465422152517252005123890833540
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 41:5e:6e:b2:83:ee:dd:7e:f9:f4:b0:b8:61:4f:ea:2d:98:fe:e3:95
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): 1c:27:41:bd:e3:99:f0:04:39:32:fc:9c:60:62:e2:b8:14:ef:9d:28
Fingerprint (sha256): 01:26:da:d6:ea:b3:9f:b7:3a:13:7d:f3:42:c0:bd:7a:74:53:a2:50:5d:6f:93:df:5b:11:32:07:25:a6:ca:6f
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate admin.phone.cam.ac.uk
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for admin.phone.cam.ac.uk
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
admin.phone.cam.ac.uk
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Certificate
The complete raw certificate details for admin.phone.cam.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIE9jCCA96gAwIBAgISA91fe3ZOgTLj10EWu+o9C2iEMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yMzA2MTYyMTEwMDZaFw0yMzA5MTQyMTEwMDVaMCAxHjAcBgNVBAMT FWFkbWluLnBob25lLmNhbS5hYy51azCCASIwDQYJKoZIhvcNAQEBBQADggEPADCC AQoCggEBAL8+yQvIVz6zAZ8BKrBFL2BtqIAA4qq6Kjgune2ga3ew1lUMGLouu92k U/stNmh026blapUAzZpgUenqmwnGGAgoN5Sx6N+gy88KN/x95Y1aKgQTYt0T1G4z LWv6r7sx1DlLhrjdjIal50PVrloIKy63ZBir0u7wVAomAOS0EO7VZay4Uf40rElR rPzyN7r5jHbE3caKA6RZ2vc4nr0xcf0pq1ZF5Zt8JwamDhFOLv97bWvpV2rDvkzS mRLgyJy5bCD2yj6h51gDpYobxIbB504qhZaWcpgzZRYPNRqGNP+3s3Dvl4+vFSF4 sCGT4ZmszqV6MHI1bh97Y9KnN5FmlCMCAwEAAaOCAhYwggISMA4GA1UdDwEB/wQE AwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIw ADAdBgNVHQ4EFgQUQV5usoPu3X759LC4YU/qLZj+45UwHwYDVR0jBBgwFoAUFC6z F7dYVsuuUAlA5h+vnYsUwsYwVQYIKwYBBQUHAQEESTBHMCEGCCsGAQUFBzABhhVo dHRwOi8vcjMuby5sZW5jci5vcmcwIgYIKwYBBQUHMAKGFmh0dHA6Ly9yMy5pLmxl bmNyLm9yZy8wIAYDVR0RBBkwF4IVYWRtaW4ucGhvbmUuY2FtLmFjLnVrMBMGA1Ud IAQMMAowCAYGZ4EMAQIBMIIBAwYKKwYBBAHWeQIEAgSB9ASB8QDvAHYAejKMVNi3 LbYg6jjgUh7phBZwMhOFTTvSK8E6V6NS61IAAAGIxkIx3QAABAMARzBFAiEAlLYL ml7Q72+zudG5cg2hw6JrWEGLG7mEPQllkf7ikFACIA4fAVx2+/tIKDiZCOdYenhb cWFdUhekEOyifpkneI1HAHUA6D7Q2j71BjUy51covIlryQPTy9ERa+zraeF3fW0G vW4AAAGIxkIxwwAABAMARjBEAiAFBEiA3cip4j7jPHgafdcGJ1pYbi9/b1NEIPpB ysoAZQIgTG7ZVPdd9ZkyQ0osgnEBiGs75onVt1k8daC9DwuxGFEwDQYJKoZIhvcN AQELBQADggEBABLC6VRH2fYNd9E3gQLh1Xavjfms+VaEwZMEqRxtgADiRp7QTZEH +Y3PJ4rEM0uCg6CGDRtgoud3swTcZlHV6ssB7hOLg18lF1Ni6VVom2aI78vSHc4n kouBKw9ndaNBVI2a3AWQMrDOkARu7D1/5BGmi1BZQ0m3g3k3KiG+hRQk7d+f8FlK LqowqJ/KA2wBC20oHJw824r4VAgTLRMMKz9wPn8+I9Rg/ECxeriwirZi5LvSEeDn BRbHMQHQo/7MNmF+zCEDeTp4Ofe3xKhOvWU2/2xk2+fpAKY3YkdPb8czqXY5dl2u ub/q+pGavpcVf4wgYNbX1asqRrByh7Uh1aY= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvz7JC8hXPrMBnwEqsEUv YG2ogADiqroqOC6d7aBrd7DWVQwYui673aRT+y02aHTbpuVqlQDNmmBR6eqbCcYY CCg3lLHo36DLzwo3/H3ljVoqBBNi3RPUbjMta/qvuzHUOUuGuN2MhqXnQ9WuWggr LrdkGKvS7vBUCiYA5LQQ7tVlrLhR/jSsSVGs/PI3uvmMdsTdxooDpFna9zievTFx /SmrVkXlm3wnBqYOEU4u/3tta+lXasO+TNKZEuDInLlsIPbKPqHnWAOlihvEhsHn TiqFlpZymDNlFg81GoY0/7ezcO+Xj68VIXiwIZPhmazOpXowcjVuH3tj0qc3kWaU IwIDAQAB -----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 336666178596465422152517252005123890833540 . . . . . . . . [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 'R3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-06-16 21:10:06 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-09-14 21:10:05 +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 'admin.phone.cam.ac.uk' . . . . . . . . [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 24142476851634976774219895733537072604350034479982858459325268847455951487928638202509288317515980322664248127013302511698507973067912442788810319825722124362701345374705645530782600386295485962642209149753089195377326986950641681052662426335349178197897762319822921764334041458388772864403089677383768889397580655148881252712091589953190577630666977158709912397438041483901256410471506728739138047949773109291656485422722922385130913438455445177834295332342840015537571680684554120128527336953084589618650653893102453112571279901871029787486386715623988450226377244267635540187944775117980932142313563237694342337571 . . . . . . . . . . . . . . . . . . . . [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) 415e6eb283eedd7ef9f4b0b8614fea2d98fee395 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (25 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'admin.phone.cam.ac.uk' . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef0076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000188c64231dd000004030047304502210094b60b9a5ed0ef6fb3b9d1b9720da1c3a26b58418b1bb9843d096591fee2905002200e1f015c76fbfb4828389908e7587a785b71615d5217a410eca27e9927788d47007500e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e00000188c64231c30000040300463044022005044880ddc8a9e23ee33c781a7dd706275a586e2f7f6f534420fa41caca006502204c6ed954f75df59932434a2c827101886b3be689d5b7593c75a0bd0f0bb11851 . . . . [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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