www.iowaoptometry.org

Issued by R3

About this certificate

This digital certificate with serial number 04:fa:5e:e5:69:0b:7f:2b:6b:e4:84:ce:9d:f5:7d:48:16:83 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.iowaoptometry.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:fa:5e:e5:69:0b:7f:2b:6b:e4:84:ce:9d:f5:7d:48:16:83
Serial Number (int): 433645874055423864280567638771965092173443
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 0c:42:8f:97:c7:85:d8:a3:9a:ca:83:4a:8b:7b:ce:89:d2:d8:8c:c2
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): c9:06:e0:ac:96:ba:e9:4e:d2:3a:24:4a:a9:a9:3f:19:01:f5:7b:8f
Fingerprint (sha256): e3:9f:9d:d8:0f:48:c4:f5:8e:d5:cc:6a:3e:5d:e1:35:26:57:bc:81:c1:a4:39:6a:44:22:cf:fb:c4:9a:c0:55

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate www.iowaoptometry.org

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.iowaoptometry.org

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.iowaoptometry.org

Other certificates including the domain name iowaoptometry.org

(limited to 100 certificates)
eyeknow.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
www.iowaoptometry.org
www.iowaoptometry.org
eyeknow.iowaoptometry.org
eyeknow.iowaoptometry.org

Certificate

The complete raw certificate details for www.iowaoptometry.org in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzfhJRvkT+hbzIyo3IcKp
zVM5XjP52v18lLU5o5Lz4UJr2vlMx14VUHmBR5v6nBs1Qmc3dpLEjbX/KbT6Pb1x
uUZ6QPfRKz1lZfVOV4c/A1fy9G6ZO6GBYj1/VgZmd4c0DqKBgQgJ5mbp20THa0GC
1Ae8O8cjZbjdUuWppdX0XMNw79cULGbELmEIwF0fZSJkDu2tl0H7iBOCoSjVQzBw
xeg5xEsXEpl1wP7ocP9snkywenJjmLXGTLTbu2diPMwPEJBrbHp+O6xEdgR55/p9
D9Xn4X49BRemCuqVAfES6ImH5M+LMV0waR602ft5NSOfgwdpw1HmEKUcNrdN+hAl
AwIDAQAB
-----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 433645874055423864280567638771965092173443
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2022-11-14 02:42:52 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-02-12 02:42:51 +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.iowaoptometry.org'
 . . . . . . . . [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 26001287025793774666760196467539659773944643362500573651949956090361738078216617534501949096693359470641267964955955751243064046332367722962780594893199585472142566344363940574638333717086383371235582782252135038014599700104897310291617766632308619893911318714160645041373996175063539394726580885104734142544751999954405050550278356545198514121950634521386311663720035832673892180414217746572262556334045633694364743900979198320775174857247912936835839665843279674920286762573267182122883311312709293949612449684504527791466145774004896540983779814206283086405820307271343588707189466307682660997920562946365002360067
 . . . . . . . . . . . . . . . . . . . . [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)
							0c428f97c785d8a39aca834a8b7bce89d2d88cc2
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (25 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.iowaoptometry.org'
 . . . . . . . . . . . . . . . . [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)
							00f0007600adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a00000184743b93f70000040300473045022100fcab1439b05f90417d83a1dc188b7501a20abf72a1f5d2d49da41630f9d1a0e3022035e5a7e7308aefecd0685ce9823495810d5bf3e547714b1298608152d0f793c3007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb49900000184743b95b50000040300473045022100a414d5c204405aaf6cf8fd27ea38562066c2ffcd6f6411c4aeb4516815fc1c2102202b7489c02d4936819774502439af149f2deaa2343277d2ccb692f8cebdc3e6dc
 . . . . [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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