yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:c3:7d:6c:8b:33:40:54:c5:e3:f4:0d:6f:4f:a6:fa:fe:ff was issued on by Let's Encrypt.
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=yushikai.co.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:c3:7d:6c:8b:33:40:54:c5:e3:f4:0d:6f:4f:a6:fa:fe:ffSerial Number (int): 327858636435713057281444881856679139540735
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 09:4a:19:2c:30:9f:1f:36:9d:b3:9b:83:70:5f:fb:4a:fd:b7:35:de
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 6d:6c:95:98:9c:7c:c2:c8:b2:c4:fa:9c:ed:3e:fe:66:4e:fd:f8:92
Fingerprint (sha256): 56:d9:8a:43:e9:40:ad:f3:b5:42:03:00:5a:15:38:5d:ab:42:78:4d:58:da:7d:99:bd:0b:94:35:f0:3b:fe:d1
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate yushikai.co.uk
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for yushikai.co.uk
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
9 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
www.yushikai.co.uk
yushikai.co.uk
yushikai.co.uk
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yushikai.co.uk
yushikai.co.uk
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yushikai.co.uk
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yushikai.co.uk
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yushikai.co.uk
Certificate
The complete raw certificate details for yushikai.co.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGaTCCBVGgAwIBAgISA8N9bIszQFTF4/QNb0+m+v7/MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA0MjUwMTM3NTRaFw0x OTA3MjQwMTM3NTRaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxvVHXv/XgsxvCUO2HYLrjKmQq4lo4IzS oMeO3AmBRBILK9sMptTYWAMkbmkKifiVAt0XSeJC3PpHtLnbLErEW6p/u7Z9eRLP dGQtv4ipf4JY/ygT3YjtbIoDO7jRGUJb8r+omlGOizEC+PUf92xSQ4Tw2YGBOzoV tKsQ7/Hxj+Q/o/5BVmtM17yCPlBU9VsBubfn3Jt5ymfEKnfDq5zXTQC/7JxRGm5q 2gn+g7K00ljyske3oP1kXdngRKSB2jJw0b4i48IIbEAGnlP5N0eFOQGC7MSvWkyP PFvrun2W4+6vcdKZXgHxxewblsFMXNhO0nbs+ef9Svl2Q2Ci5B3dxWIEJShK0xs3 mHbhRBElaXoSNRSaJrPKYd1xCLJiTH4rih/NeBOrDaIbVZb0qfzcwN+akltXn1x8 6vffDLrnIfj1MDXJ/C4S6BDmhTCCE/ad05V1uYDrX3rQxjLTP1MaNq1Gp7M2RM92 vyzifMa0+q8Z7wPBw+z9M0GhJ8beNByrLj7vFUWxlSwZYjzJO3Lf5uclgsQgcLuE kifRKm2l7AMPIhcDkh4YDIjIYBleoDuyOTYJCST7VDlbPkXUE2BphELsKULS3gOr /YwH4JgxypHAlJ90ybQTzSwtPMJ70rz/B7GcZQ7A2myMu3lhVw+X6vQOTXNLirL0 ZXXLUqrRRWUCAwEAAaOCAngwggJ0MA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUCUoZ LDCfHzads5uDcF/7Sv23Nd4wHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBQYKKwYBBAHWeQIEAgSB9gSB8wDxAHYA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFqUltEZwAABAMARzBFAiEAuzbOu6JaiuTgu6lZGjvwbhsA SDpx9AiLturX5vWCaj8CIAlmmMQ0Emf6Ekth6UtJJZl1bxWkhCSVttkYrMm2fi7K AHcAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFqUltEYwAABAMA SDBGAiEAt8uV5Z6Yj6h3XUlpsyqB7h+tyUPXZ0Eh58rUMkLLL9MCIQCZZjySAAYG i3fOt9UXDwGIHi5lnHwNB+Bi5A/QgHzv/zANBgkqhkiG9w0BAQsFAAOCAQEAeWoS FXUABcCnguvcV2LwdQIGiaKEF3TyD+Nz8wMSXYo6KKvGrdVTNkbLC1scz3mQi9GG atvLSZs01FEciBIb1iJnjb/noTLS7WEI3Zc9kkRGcgB+WG47/XnyQjg93nzHxJ2r cD64wfZ5tnGp89tjkbDUd4isGQNSiM4WtnLwJ5BcafBUKlDugv2oE/tWjkEx0BP/ cO8Tc26Y6EZXq2O1/s7WPeSYvCV0I7UsrGDXsH8H7KZeElDSiGnV4TKj8mO3vKJP unVRUhQIeaKMovu5DfU4DMjvTgcOxILkZArF/eWx2/6W4V62321pwyEJ1ICnKUTl vqWamraDtKHPHc/w0w== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxvVHXv/XgsxvCUO2HYLr jKmQq4lo4IzSoMeO3AmBRBILK9sMptTYWAMkbmkKifiVAt0XSeJC3PpHtLnbLErE W6p/u7Z9eRLPdGQtv4ipf4JY/ygT3YjtbIoDO7jRGUJb8r+omlGOizEC+PUf92xS Q4Tw2YGBOzoVtKsQ7/Hxj+Q/o/5BVmtM17yCPlBU9VsBubfn3Jt5ymfEKnfDq5zX TQC/7JxRGm5q2gn+g7K00ljyske3oP1kXdngRKSB2jJw0b4i48IIbEAGnlP5N0eF OQGC7MSvWkyPPFvrun2W4+6vcdKZXgHxxewblsFMXNhO0nbs+ef9Svl2Q2Ci5B3d xWIEJShK0xs3mHbhRBElaXoSNRSaJrPKYd1xCLJiTH4rih/NeBOrDaIbVZb0qfzc wN+akltXn1x86vffDLrnIfj1MDXJ/C4S6BDmhTCCE/ad05V1uYDrX3rQxjLTP1Ma Nq1Gp7M2RM92vyzifMa0+q8Z7wPBw+z9M0GhJ8beNByrLj7vFUWxlSwZYjzJO3Lf 5uclgsQgcLuEkifRKm2l7AMPIhcDkh4YDIjIYBleoDuyOTYJCST7VDlbPkXUE2Bp hELsKULS3gOr/YwH4JgxypHAlJ90ybQTzSwtPMJ70rz/B7GcZQ7A2myMu3lhVw+X 6vQOTXNLirL0ZXXLUqrRRWUCAwEAAQ== -----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 327858636435713057281444881856679139540735 . . . . . . . . [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 X3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-04-25 01:37:54 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-07-24 01:37:54 +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 'yushikai.co.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 (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 811678315210960332720484697321971939764916778788869619960617637381801676087085753949773115721434241019197891798401555081288378410230543825390820799033221499572971884190381335036565232640184211713077944067922073644141591442921304081620191486059246763913039376333805640180929225512953221673776192652592421670423386644082377224273079287543496713990153512390319404749517982861724230887626562849835632959743445562664005956565646127925183953517664109164686634433552726116577427848298346803133900477251412269235453666698851772379827607136492894452628202762317521223983149705504731750865728291779300771150255579045158015314166348329756205108179934672589019303472809751581426347789131659664710548124061900741515623923014451772491412029017843068601222666873576857878143671804251614707368837907335561414882592491745207869213132418620344471557803012894659376557509855244178718693185114345492328482264190789622120874474718336955039487636440339876449593018345547107218097776084226746755784104814738234431290044588814001761971167719373939640813773517892397424330062324006765618912403856504870560650239963401956334631797419097868425144087613363790665499190121413934166982165522806220629636111092189747019557965649270844074534515737535093684632110437 . . . . . . . . . . . . . . . . . . . . [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) 094a192c309f1f369db39b83705ffb4afdb735de . . . . . . . . . . . . . . . . [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 (99 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-x3.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-x3.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 (38 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.yushikai.co.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'yushikai.co.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 (69 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 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f1007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016a525b44670000040300473045022100bb36cebba25a8ae4e0bba9591a3bf06e1b00483a71f4088bb6ead7e6f5826a3f0220096698c4341267fa124b61e94b492599756f15a4842495b6d918acc9b67e2eca007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016a525b44630000040300483046022100b7cb95e59e988fa8775d4969b32a81ee1fadc943d7674121e7cad43242cb2fd302210099663c920006068b77ceb7d5170f01881e2e659c7c0d07e062e40fd0807cefff . . . . [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) 00796a1215750005c0a782ebdc5762f075020689a2841774f20fe373f303125d8a3a28abc6add5533646cb0b5b1ccf79908bd1866adbcb499b34d4511c88121bd622678dbfe7a132d2ed6108dd973d92444672007e586e3bfd79f242383dde7cc7c49dab703eb8c1f679b671a9f3db6391b0d47788ac19035288ce16b672f027905c69f0542a50ee82fda813fb568e4131d013ff70ef13736e98e84657ab63b5feced63de498bc257423b52cac60d7b07f07eca65e1250d28869d5e132a3f263b7bca24fba755152140879a28ca2fbb90df5380cc8ef4e070ec482e4640ac5fde5b1dbfe96e15eb6df6d69c32109d480a72944e5bea59a9ab683b4a1cf1dcff0d3