www.zajac.boston

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:61:6a:84:82:22:68:b4:80:a3:15:9b:f4:3c:9d:75:df:75 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=www.zajac.boston

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:61:6a:84:82:22:68:b4:80:a3:15:9b:f4:3c:9d:75:df:75
Serial Number (int): 294485833576789709230936184312073270189941
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: fb:fc:2d:9f:aa:7a:3f:75:f5:93:98:37:0b:a5:7f:2f:f3:ef:5f:b1
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 98:29:66:52:7b:a6:9c:d9:0f:80:1e:df:06:f4:a4:f7:01:77:6b:3f
Fingerprint (sha256): 93:9e:d4:c8:0d:bf:f9:b0:4c:ee:94:43:5d:b6:44:69:4e:5d:23:bb:4b:5c:a5:00:6e:45:d7:d4:a4:47:3d:ef

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 www.zajac.boston

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.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

www.zajac.boston

Other certificates including the domain name zajac.boston

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.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 294485833576789709230936184312073270189941
 . . . . . . . . [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 2020-02-24 18:03:11 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-24 18:03:11 +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 'www.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 671952536725804312205556087878566669121045232621649986643708354167085988099742190770295471300872869744273512131210210028994779709955257245148808663018958486334498043311824151718966948855901810517992708411978022711676004110487424588726768781203380417147791063655504322402580877220128952884208334327498270149994759004680854671847703122657618231159470125213411249266636497218031652011107410663504726389482439890222818938703229362404897775024133671557501117042526254692849426425736635591204886027335272549952231195819899239061438633746736709585270706316158386859151645885854965974612445300365562807644525939431031831638541994301974862184224055969952797964043231409457931466387130059513904901765990063175325442219093647834428065562719816210152550396462026862277882087676689362644486657398072004855952848524336011047274502369828839880795988207614964109983377649090641357646570844177164662125327335545143142145225570575935891773296388314305059873616668279060269693193938989232662680136200552930100893215922334091577941658587484479934713161258951726048963636463008134819700668958678633131211017631310721512055842504804240508573580118915742278767746061306283444726910586561535267504169379171326380072787386925156522353907601257511748956639259
 . . . . . . . . . . . . . . . . . . . . [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)
							fbfc2d9faa7a3f75f59398370ba57f2ff3ef5fb1
 . . . . . . . . . . . . . . . . [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 (20 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007700e712f2b0377e1a62fb8ec90c6184f1ea7b37cb561d11265bf3e0f34bf241546e000001707894f05e000004030048304602210087a28f74fd4c5d41ae941174e8a8d2e19d9bfd07e69e78efc9e6a53df329394e02210088ce6b8ec1f582b31cfab950fd5a6bc9185c9d71e9404de19c6e69f284a44f56007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e000001707894f05500000403004630440220625b3de109ee97ac877fb3b48a14c56f2a610e4f183fa7a8d1025c3bdcca2d2802204980204d7a5154c07590330dbe9cca49cba422251f5245eab32c44e4915e002d
 . . . . [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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