www.mailman.columbia.edu

- Columbia University -

Issued by InCommon RSA Server CA

About this certificate

This digital certificate with serial number 9a:eb:33:51:4a:02:2a:17:35:2f:e6:a4:5b:02:90:93 was issued on by Internet2.

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)

Columbia University

Organization: Columbia University
Organization unit: Information Technology
State / Province: NY
Locality: New York
Country: US

Internet2

Organization: Internet2
Organization unit: InCommon
State / Province: MI
Locality: Ann Arbor
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 9a:eb:33:51:4a:02:2a:17:35:2f:e6:a4:5b:02:90:93
Serial Number (int): 205922341955908186156412614273308725395
Serial Number lenght: 128 bits, 16 octets

SubjectKeyId: fb:2e:1f:6d:d7:aa:f3:d5:1b:6a:c1:34:d5:6e:1b:28:cb:e1:ef:d0
AuthorityKeyId: 1e:05:a3:77:8f:6c:96:e2:5b:87:4b:a6:b4:86:ac:71:00:0c:e7:38

Fingerprint (sha1): 02:2b:4c:08:31:80:fd:0c:a3:15:c8:1e:2f:1d:39:c1:7d:b3:a9:22
Fingerprint (sha256): 00:43:87:fa:33:7e:e6:7e:86:7e:8e:d6:fe:b6:18:5c:e7:46:83:e0:77:86:96:02:f4:f5:dd:e4:e7:0e:78:ae

Issuing Certificate URL: http://crt.usertrust.com/InCommonRSAServerCA_2.crt

Revocation information

OCSP Server: http://ocsp.usertrust.com
CRL Distribution Point: http://crl.incommon-rsa.org/InCommonRSAServerCA.crl

Check the revocation status for certificate www.mailman.columbia.edu

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.mailman.columbia.edu

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

www.mailman.columbia.edu

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Certificate

The complete raw certificate details for www.mailman.columbia.edu in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwAnnIv9EuMwh+4n17Rsm
fb5YKZUTV3KTsrnMDExlyR/mVF6eqCkIiMwTJ2pl9HvN7Wc494Ch+1iDRtc0IAKz
WyaV363UzmGCbf9sN17LTjlJOLhJHdMsnamLnrlqqP0V6TNvULOA6zUn0LJUrbtN
tkZzxWvCKAe8H/fACF3ValAhLSRlIjfIar1EhZhxac2YyYphTkb4U2rfmTkjrhCk
KJAyPED0cQaycDsWksy4kmSwHSlqjnbEyjOe1rrfgfAlzjkFrTXQrz6EUiWn4nyZ
YHvXQZ3P0pNqICAP1mtHcrcXHiYPN2GxXg/wRyi7J8r45Hlc9CHAdMh22Alf2gcT
cwIDAQAB
-----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 205922341955908186156412614273308725395
 . . . . . . . . [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 2.5.4.8 (stateOrProvinceName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'MI'
 . . . . . . . . . . . . [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:19|false] PrintableString 'Ann Arbor'
 . . . . . . . . . . . . [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 'Internet2'
 . . . . . . . . . . . . [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:19|false] PrintableString 'InCommon'
 . . . . . . . . . . . . [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 'InCommon RSA Server CA'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2015-07-06 00:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-07-05 23:59:59 +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 'US'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.8 (stateOrProvinceName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'NY'
 . . . . . . . . . . . . [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:19|false] PrintableString 'New York'
 . . . . . . . . . . . . [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 'Columbia University'
 . . . . . . . . . . . . [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:19|false] PrintableString 'Information Technology'
 . . . . . . . . . . . . [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 'www.mailman.columbia.edu'
 . . . . . . . . [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 24242637844511439406271881725639608193935939031055029076561026904546241542128567362564029612738578639414808113043285760042421410995221143427054473612858174346107945976194200004792967623801551911035090540346982691462651975160967220031864120838916549070496592489245959630356971602286100470095971468088960759895477995764175552990038447214139704597108777691335918019158242440917344539663292833382836609633607706441291879206098279332780728972347293977030215263054858142205097500101146015429950987448950875318811688090386394944517903297485800978940719985920441462296781204759715939644523400168431933878985559908562063790963
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 1e05a3778f6c96e25b874ba6b486ac71000ce738
 . . . . . . . . . . . . . . . . [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)
							fb2e1f6dd7aaf3d51b6ac134d56e1b28cbe1efd0
 . . . . . . . . . . . . . . . . [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 2.5.29.19 (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 2.5.29.37 (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 2.5.29.32 (certificatePolicies)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (96 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.5923.1.4.3.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 'https://www.incommon.org/cert/repository/cps_ssl.pdf'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.2 (Organization Validation Certificates Policy)
 . . . . . . . . . . . . . . . . [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 (61 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.incommon-rsa.org/InCommonRSAServerCA.crl'
 . . . . . . . . . . . . . . . . [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 (105 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://crt.usertrust.com/InCommonRSAServerCA_2.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.usertrust.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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.mailman.columbia.edu'
 . . . . [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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