prooptik.de
Issued by R3
About this certificate
This digital certificate with serial number 04:74:93:b0:20:3c:2d:38:9a:33:54:40:7b:2e:87:8f:59:65 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:
- 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=prooptik.de
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:74:93:b0:20:3c:2d:38:9a:33:54:40:7b:2e:87:8f:59:65Serial Number (int): 388118209303302125432414999544104009816421
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 32:82:70:28:ef:fa:d2:ad:2d:63:89:d3:cb:07:2e:7d:07:df:c0:d5
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): a6:bc:0e:40:66:46:12:f3:77:a6:08:e7:c1:d7:6a:b8:77:ba:db:99
Fingerprint (sha256): c4:7c:6f:84:9c:bd:18:03:c4:1c:28:bb:c7:c6:6a:91:94:32:c1:b0:e4:2e:be:cf:f7:83:b6:67:66:25:0a:f6
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate prooptik.de
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for prooptik.de
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
prooptik.de
www.prooptik.de
www.prooptik.de
Other certificates including the domain name prooptik.de
(limited to 100 certificates)
*.prooptik.de
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www.prooptik.de
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prooptik.de
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webmailer.prooptik.de
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prooptik.de
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*.prooptik.de
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sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
webmailer.prooptik.de
sni196360.cloudflaressl.com
prooptik.de
sni196360.cloudflaressl.com
*.prooptik.de
www.prooptik.de
webmailer.prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
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sni196360.cloudflaressl.com
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sni196360.cloudflaressl.com
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sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
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sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
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sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
prooptik.de
*.prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
webmailer.prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
www.prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
www.prooptik.de
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sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
webmailer.prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
prooptik.de
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
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sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
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sni196360.cloudflaressl.com
sni196360.cloudflaressl.com
*.prooptik.de
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*.prooptik.de
prooptik.de
sni196360.cloudflaressl.com
www.prooptik.de
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sni196360.cloudflaressl.com
shop.prooptik.de
sni196360.cloudflaressl.com
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webmailer.prooptik.de
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prooptik.de
sni196360.cloudflaressl.com
*.prooptik.de
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webmailer.prooptik.de
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sni196360.cloudflaressl.com
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Certificate
The complete raw certificate details for prooptik.de in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIE8zCCA9ugAwIBAgISBHSTsCA8LTiaM1RAey6Hj1llMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yMzEyMjQwMTUyMTZaFw0yNDAzMjMwMTUyMTVaMBYxFDASBgNVBAMT C3Byb29wdGlrLmRlMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsh9H aCZRzlfVahdnsDX4hQV4/OpGnWuUNR09IdySZMUiKIxeXvidr15ZAO0Hr2zByPts Q1YZ7BS7sVlNmpaX7JFuDWC7IS84ebQMm9yZncxZW/HcZ2Dkal3WRBPkMfw1UQni SuO75XjK+sZ9HEsottiF9NbP5nSnJjXIFgo2CCEHe68vQmf/JI73ytlyf7w4ihzx ZaOw4Tfz4nC/2C322AOQlvLWM1jpR3dvMRmZRB/WYMz1ixcgBeojvEugSa8htWot U+I3HTi0h6CAFDnsiAc0KNRM0425H9G7EAkym0vAYPM/08gGSasoR7t2sluULZqk I5sRHuLjaPjTTFcbwwIDAQABo4ICHTCCAhkwDgYDVR0PAQH/BAQDAgWgMB0GA1Ud JQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQW BBQygnAo7/rSrS1jidPLBy59B9/A1TAfBgNVHSMEGDAWgBQULrMXt1hWy65QCUDm H6+dixTCxjBVBggrBgEFBQcBAQRJMEcwIQYIKwYBBQUHMAGGFWh0dHA6Ly9yMy5v LmxlbmNyLm9yZzAiBggrBgEFBQcwAoYWaHR0cDovL3IzLmkubGVuY3Iub3JnLzAn BgNVHREEIDAeggtwcm9vcHRpay5kZYIPd3d3LnByb29wdGlrLmRlMBMGA1UdIAQM MAowCAYGZ4EMAQIBMIIBAwYKKwYBBAHWeQIEAgSB9ASB8QDvAHYAO1N3dT4tuYBO izBbBv5AO2fYT8P0x70ADS1yb+H61BcAAAGMmbzMjwAABAMARzBFAiEAinIERanP TvZITRAdElz7uTon/KXlsnaLSgNvbkbp1rgCIGxHvIqCcmk13DLdLs/ZLClDWMuS Wfip5TADm2umNZSsAHUA7s3QZNXbGs7FXLedtM0TojKHRny87N7DUUhZRnEftZsA AAGMmbzM8gAABAMARjBEAiBl71rq9R3ioyb7O7rHInq1pct61+TBzCLXih2ecHDL bgIgWJFM8LNG3DgALCsQafeysprRX8YJ9L5aCKHW9k+MaRswDQYJKoZIhvcNAQEL BQADggEBAI7EqNMgMuiOEPl+evEQQdwGj09g+LBjqnxKTgX7m24Goks7j8BoW2df bauhVNu4ovnno9ZbxRi3N0zoNHNOE4aOM31M/RMHtb3Ly6FH5VrGM9XxmQjkSvQ7 W0ysM+UhY/tczGkDE+wkP1t5puAjr6lwk+MupIrdzbivgQweNJOCJ+LKheoIePs7 Wf9AwFYOOEhR4JnLUt94wuLYsLyslU69snZvS8l/F419fZUwelv6PMy8YTTIC7+g P8q8LlUtaziKKXzaV1RlfLybikUYVn5hKL+hT4mGBAzlxSRfXaIu+5H4Yi6gZPZD yHQAbOd6gWB0iX5Wk7KRngzl+tAi4+0= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsh9HaCZRzlfVahdnsDX4 hQV4/OpGnWuUNR09IdySZMUiKIxeXvidr15ZAO0Hr2zByPtsQ1YZ7BS7sVlNmpaX 7JFuDWC7IS84ebQMm9yZncxZW/HcZ2Dkal3WRBPkMfw1UQniSuO75XjK+sZ9HEso ttiF9NbP5nSnJjXIFgo2CCEHe68vQmf/JI73ytlyf7w4ihzxZaOw4Tfz4nC/2C32 2AOQlvLWM1jpR3dvMRmZRB/WYMz1ixcgBeojvEugSa8htWotU+I3HTi0h6CAFDns iAc0KNRM0425H9G7EAkym0vAYPM/08gGSasoR7t2sluULZqkI5sRHuLjaPjTTFcb wwIDAQAB -----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 388118209303302125432414999544104009816421 . . . . . . . . [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 2023-12-24 01:52:16 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-23 01:52:15 +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 'prooptik.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 (2160 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 22485842500663565128780886925112304925677611185314634559609032429554600389562889358058297002151460645655527194139730466414939626971788520223918893579943024527309593241728517401908798053512053597939044138404587269333534933703085032447034750311826269521537045699804602393560271854633765742123592882173207511870974260066429085819401158786831078040999659020027607352656039026472325035321614071560032973847025550364808360334291733767017754170969377385707549832342714023791238096235775995967542346751871031390999748197062662349238354262186906117403707303893568823798342893348880674758119435016988002328401491374942876801987 . . . . . . . . . . . . . . . . . . . . [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) 32827028effad2ad2d6389d3cb072e7d07dfc0d5 . . . . . . . . . . . . . . . . [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 (32 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'prooptik.de' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.prooptik.de' . . . . . . . . . . . . . . . . [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) 00ef0076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c99bccc8f00000403004730450221008a720445a9cf4ef6484d101d125cfbb93a27fca5e5b2768b4a036f6e46e9d6b802206c47bc8a82726935dc32dd2ecfd92c294358cb9259f8a9e530039b6ba63594ac007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018c99bcccf20000040300463044022065ef5aeaf51de2a326fb3bbac7227ab5a5cb7ad7e4c1cc22d78a1d9e7070cb6e022058914cf0b346dc38002c2b1069f7b2b29ad15fc609f4be5a08a1d6f64f8c691b . . . . [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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