zajac.boston

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:a1:ab:b1:9f:55:67:27:00:3e:5a:8c:0e:6a:9c:67:a9:76 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=zajac.boston

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:a1:ab:b1:9f:55:67:27:00:3e:5a:8c:0e:6a:9c:67:a9:76
Serial Number (int): 316350539125044458735828663563332734134646
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: b5:82:de:e6:b2:7f:46:86:ad:52:e0:13:28:28:b7:5f:0e:70:21:25
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): cc:9c:24:25:06:04:f1:f9:9d:c1:05:5d:ac:ea:de:63:e1:02:a9:0f
Fingerprint (sha256): 02:c2:4c:84:d2:d6:bc:aa:14:60:03:33:7a:f4:b7:01:ab:59:57:1d:cd:31:7f:4b:11:df:a1:a1:91:cc:ae:c7

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate zajac.boston

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for zajac.boston

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

zajac.boston

Other certificates including the domain name zajac.boston

(limited to 100 certificates)

Certificate

The complete raw certificate details for zajac.boston in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAtTOtw5gBymuju3jP5mbv
eMliKQozd6m/ZTr9lJPBh2Gvzn9h3z7URYLWAh7p5cVAdzRSBzPBNMaA3JcyQwlU
heQTShkb1ol3j5O76nA6gSQC+SvqkV++eBKsy0VsBFrQ3bzz+CmT4KNuDhJSPTNg
OMZnh/c+MknUtt4NYqSHILtuAlFsMKPm+KdncCrQ42Hm8PUhyPNxl5OQhgw2jlJ3
jSPus5QoWqkp5U1gn/DeRFfQ9llJzPFSF0QSb4NBRd+sdxqiolJU2prKFGc0LkUn
SsCv6ykY/KfCTTykGYBrnIG64lCIfUtWK2NBBCv6EmtWq6kAOs+b/1w4TlxpgrCH
0a6ZDfPhgZyEy6/cc2Oag/jyyAIJICjkfKc3ITqfKQ89x8AEBAL45djV9V7MZHxG
MMB74QSWzGBvFdX4TMRPd6biD1jVekzF870yf1tXMMfsAZQoBd8SjMXQ/HZzQtos
VPdsHDhwlpVOR9Wey85eWRzGOR5YOt8V2cGdbaJ6VNyW3MJL/ETr5uWFhrQc5By4
rNCPVIIsr0Y/5hrIAQQJiZZXbkJVUogLKqJYOzQ7weAHKqITvKCpRRVt5pXL7CDp
299lkDGSbsq/kWohEJdGKsl0TophgaX1XzEv3dAhC0bL60zCnvmQha/ozzZ/dCvb
VcCdIV0Qffgs2h4vDfvv1psCAwEAAQ==
-----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 316350539125044458735828663563332734134646
 . . . . . . . . [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 2019-11-07 12:33:40 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-05 12:33:40 +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 'zajac.boston'
 . . . . . . . . [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 739239134789116718816188537261508637263840981631830905078970366565759618315145084610133463185681524414584728247984393462602883442868803424255682750609804273076148682989257194559756817309675300563745693985027959744827685826374768001016983792074187603323010152910125061690248715530982939622936409492280403277970477965831052083607583579356086585009671504070311719641842736767674241217127571157758750041792157621315982144165340833591032305830349216728380049276520720474691454457646721781386122211899966863946704520702856745062443922771985705482551180144082940359206983487404159786918298683173178855410950131722909574644391144000894252883609766346877785603957219293109317661998100994001830039621602912875673628368840608521430314006422526268358687040016328349325491892789924973453282859400436402366314209282377185334826467633320437359601895568394551877418216210028132323460580165417065896331846903656669447864222787813865860173028990621494602513616333925534529525370294330057670529776638504682009855016130665136148976277147137654633141304644143621467119130167955480977180153287581123213704440189243679048050272828810172648583830508135123665109416113261600380266147465908228208634357521194695200071063940814647987466415827143121740875421339
 . . . . . . . . . . . . . . . . . . . . [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)
							b582dee6b27f4686ad52e0132828b75f0e702125
 . . . . . . . . . . . . . . . . [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 (16 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'zajac.boston'
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0075005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016e4612169f000004030046304402201ac0f99d71d6d4ba697c041e1480d2f998d5c12b2c31ba48299b5d79345fcb140220111b901ca387f27fda705ceb31915d6912e9cc88e21ec0627f52db185a61abd0007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016e461216930000040300473045022100fe5b5a7bc57b9a264a461868c959be1213e46c556eac5a45db1a5dc876cfd948022022cae0105e96b50d06dc0853276b25a4662562c04355b9e5fa4a1ec28dd9a39d
 . . . . [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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