zajac.boston

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:0d:ac:2f:c6:9e:72:53:e9:26:c2:a4:1e:5c:48:85:48:f6 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): 04:0d:ac:2f:c6:9e:72:53:e9:26:c2:a4:1e:5c:48:85:48:f6
Serial Number (int): 353101689778711077211831026439780691167478
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 42:0c:ea:81:21:5c:3b:0b:cb:d2:e0:dd:6c:dc:6d:9e:10:d8:6c:c6
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 6f:7f:f2:ec:9e:06:a6:62:e8:e4:b3:ed:1c:d0:02:21:60:84:ae:59
Fingerprint (sha256): 86:33:a5:d2:c1:b9:f1:3b:a0:04:29:46:76:66:a9:8b:de:ef:4f:9e:40:62:9c:18:4d:55:82:a3:c8:99:46:25

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-----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-----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 353101689778711077211831026439780691167478
 . . . . . . . . [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 2020-03-13 21:47:08 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-06-11 21:47:08 +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 745356630686855510532191765490682161618862247876363468921235111141316353689792518639041400698569977009323538389091129372816196232755168206717704743903869434094819560313161750311453334410932921908627034868408627441635826637611314331303844349832872643105498773461117672471749647533713703510795623335929039732745606635903924925555445717809251996030149938227961680835271929221494221218808219150863157536222280984163361668983596710922848149393964631074287757128197919353519287367246124832586511647494813421102021144454435736010607492224617283744909818610373509661180155546706570614971667369245216115644116190198129560526599657277323842055051236722103732941269621718926394829052928264029493113992198653703426999291049594290018824621018505391895334594746320258082348991951724652822225582286926057584112612980736414502634942162739905047464389853856069849809365814959610209599749372568218975259425267660913177472469132573120902697134668355609487178472286497696006671301628885504220195023041940667798897312783196210340099499355659546132021588335331627903791280005547753588034427916599227650061246261683573481191306260623620656105753012696362113436902602739814936994455443906776969008103432277113810860710488624581768771968952944842703494473777
 . . . . . . . . . . . . . . . . . . . . [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)
							420cea81215c3b0bcbd2e0dd6cdc6d9e10d86cc6
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500e712f2b0377e1a62fb8ec90c6184f1ea7b37cb561d11265bf3e0f34bf241546e00000170d6146e370000040300463044022004868af355f8c5d76044c453beaaf22926a326639c4d9d13f6ed7834c29bde9d02203438307694eaf0a6d8d19bbc4a56d8fcdcfb32640348e00ec082764b228c787b00750007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c00000170d6146e6600000403004630440220717aa21aa4749254cf157c0d01e9e8fe6ed88aae1891e88184d6c5c3590652d50220777996ec7fa0937040ba67230c2fb59d532d1b123e6624034a56182e79663334
 . . . . [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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