www.migros-city.ch

- Migros Genossenschafts Bund -

Issued by QuoVadis Global SSL ICA G2

About this certificate

This digital certificate with serial number 1c:1e:0d:66:ee:05:70:34:63:c1:94:e3:66:ba:c9:c7:98:0c:f6:fa was issued on by QuoVadis Limited.

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)

Migros Genossenschafts Bund

Organization: Migros Genossenschafts Bund
Organization unit: MITS
State / Province: Zueich
Locality: Zuerich
Country: CH

QuoVadis Limited

Organization: QuoVadis Limited
Country: BM

This certificate has expire since

Certificate Details

Serial Number (hex): 1c:1e:0d:66:ee:05:70:34:63:c1:94:e3:66:ba:c9:c7:98:0c:f6:fa
Serial Number (int): 160521931423926464453419532880059772340464842490
Serial Number lenght: 157 bits, 20 octets

SubjectKeyId: 6d:af:f6:12:7f:c1:07:6c:1a:00:36:d4:a3:a2:09:e5:16:5b:e1:a9
AuthorityKeyId: 91:19:62:ad:5b:17:a7:30:fb:f0:de:39:25:b1:bd:8c:b9:b8:51:27

Fingerprint (sha1): ed:e4:c0:2d:ce:90:81:05:d4:f9:b6:22:13:47:6c:71:23:eb:76:2f
Fingerprint (sha256): 9c:ca:fe:8e:07:3c:ec:e6:ba:ad:7f:eb:17:96:e3:24:84:17:5f:2d:ec:30:e3:95:f2:54:68:c3:70:10:82:25

Issuing Certificate URL: http://trust.quovadisglobal.com/qvsslg2.crt

Revocation information

OCSP Server: http://ocsp.quovadisglobal.com
CRL Distribution Point: http://crl.quovadisglobal.com/qvsslg2.crl

Check the revocation status for certificate www.migros-city.ch

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.migros-city.ch

Public Key Algorithm

RSA

Key Size

2048

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Client Authentication
Server Authentication

Extensions

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

www.migros-city.ch

Other certificates including the domain name migros-city.ch

(limited to 100 certificates)
admin.migros-city.ch
migros-city.ch
migros-city.ch
migros-city.ch
migros-city.ch
migros-city.ch
www.migros-city.ch
migros-city.ch
www.migros-city.ch
admin.migros-city.ch
migros-city.ch
admin.migros-city.ch
admin.migros-city.ch
migros-city.ch
migros-city.ch
migros-city.ch

Certificate

The complete raw certificate details for www.migros-city.ch in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA51KPBoFE+0lZd2hsNvrw
Agvh5s0r08lpEq1jkPIM0HIxiM6Lm7A/LsPDPs83Z8eGoKTUs69PWJzbfUtjUFml
drxng8C09Kh6wK+jaQrdGEihvkKA87FuYG737zqLSYPJZqnSYNpC0/tyKiu4wyjk
qGI8sCatQTviMdKcjIBSyHag+QUW2BsKv5fIZJS+IzhMJzKiDMbDr9dBtlL3t/Rr
Dlf0jMrk/iO2sYauL9qenVGx8PCjESiEtN/Ys5KWrVfI9e915BbzXTb+rEhf7S+W
Iu12IBXSD4Ju5E9AJ4JuJhYa1I/SnmlxmlbLvk7V1ZMaGdadFc2dXBWcrVuYK9x6
UwIDAQAB
-----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 160521931423926464453419532880059772340464842490
 . . . . . . . . [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 'BM'
 . . . . . . . . . . . . [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 'QuoVadis 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 'QuoVadis Global SSL ICA G2'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-11-23 09:43:27 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-11-23 09:53:00 +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 2.5.4.6 (countryName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'CH'
 . . . . . . . . . . . . [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:12|false] UTF8String 'Zueich'
 . . . . . . . . . . . . [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:12|false] UTF8String 'Zuerich'
 . . . . . . . . . . . . [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:12|false] UTF8String 'Migros Genossenschafts Bund'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.11 (organizationalUnitName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'MITS'
 . . . . . . . . . . . . [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:12|false] UTF8String 'www.migros-city.ch'
 . . . . . . . . [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 29201759656009218242443518844410640515808410768928694756966144196018103730638268019906453018238782542495385366695582833571319820989418029801622146569822297943532040648292687358784527196229220171908461645386542998212679738582640638644482261733600272426895297890532181940456354667742135268833826172573095471552693404992937190128398969775532016889494091790338529510363000729085883381285660211592037828229783142843857523437455914011915469982864201464520868551677584796731757486174693008813145743524983693795779647322223722991273586002941493665382027031581591271367027090990628187898938553292972389257244414374006354639443
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.19 (basicConstraints)
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 911962ad5b17a730fbf0de3925b1bd8cb9b85127
 . . . . . . . . . . . . . . . . [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 (103 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://trust.quovadisglobal.com/qvsslg2.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.quovadisglobal.com'
 . . . . . . . . . . . . . . . . [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 (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.migros-city.ch'
 . . . . . . . . . . . . . . . . [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 (74 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.8024.0.2.100.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://www.quovadisglobal.com/repository'
 . . . . . . . . . . . . . . . . [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 1.3.6.1.5.5.7.3.2 (clientAuth)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31 (cRLDistributionPoints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (51 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crl.quovadisglobal.com/qvsslg2.crl'
 . . . . . . . . . . . . . . . . [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)
							6daff6127fc1076c1a0036d4a3a209e5165be1a9
 . . . . . . . . . . . . . . . . [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 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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