waterloo.io

Issued by R3

About this certificate

This digital certificate with serial number 04:73:ce:ea:1c:74:8d:c2:70:8c:a1:02:20:e0:92:00:b0:b0 was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=waterloo.io

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:73:ce:ea:1c:74:8d:c2:70:8c:a1:02:20:e0:92:00:b0:b0
Serial Number (int): 387856652464687307907661380302925557969072
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 25:07:4b:9b:8a:93:b1:26:f4:fe:b2:14:11:35:50:b8:14:26:a9:78
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): b8:53:78:4a:d6:0c:4e:77:87:47:6e:3c:9f:00:60:f1:b7:7e:fc:86
Fingerprint (sha256): b4:bd:db:1c:82:58:6b:f2:ff:b5:2a:09:ae:82:ca:b6:8b:62:f5:42:3f:64:d9:bc:20:26:f5:a4:a4:b5:e9:2a

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

Revocation information

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

Check the revocation status for certificate waterloo.io

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for waterloo.io

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

waterloo.io
www.waterloo.io

Other certificates including the domain name waterloo.io

(limited to 100 certificates)
dev.waterloo.io
app.waterloo.io
content.waterloo.io
app.waterloo.io
app.waterloo.io
demo.waterloo.io
app.waterloo.io
*.waterloo.io
waterloo.io
app.waterloo.io
demo.waterloo.io
waterloo.io
app.waterloo.io
waterloo.io
waterloo.io
demo.waterloo.io
app.waterloo.io
demo.waterloo.io
waterloo.io
waterloo.io
content.waterloo.io
waterloo.io
demo.waterloo.io
app.waterloo.io
waterloo.io
sni.cloudflaressl.com
demo.waterloo.io
sni.cloudflaressl.com
app.waterloo.io
demo.waterloo.io
dev.waterloo.io
dev.waterloo.io
app.waterloo.io
*.waterloo.io
demo.waterloo.io
demo.waterloo.io
demo.waterloo.io
demo.waterloo.io
start.waterloo.io
app.waterloo.io
dev.waterloo.io
demo.waterloo.io
demo.waterloo.io
waterloo.io
waterloo.io
demo.waterloo.io
app.waterloo.io
app.waterloo.io
*.waterloo.io
app.waterloo.io
demo.waterloo.io
app.waterloo.io
waterloo.io
demo.waterloo.io
content.waterloo.io
dev.waterloo.io
waterloo.io
dev.waterloo.io
demo.waterloo.io
content.waterloo.io
dev.waterloo.io
demo.waterloo.io
demo.waterloo.io
demo.waterloo.io
app.waterloo.io
app.waterloo.io
waterloo.io
app.waterloo.io
waterloo.io
app.waterloo.io
waterloo.io
content.waterloo.io
app.waterloo.io
app.waterloo.io
demo.waterloo.io
demo.waterloo.io
demo.waterloo.io
demo.waterloo.io
dev.waterloo.io
waterloo.io
demo.waterloo.io
app.waterloo.io
demo.waterloo.io
app.waterloo.io
app.waterloo.io
demo.waterloo.io
app.waterloo.io
app.waterloo.io
dev.waterloo.io
app.waterloo.io
help.waterloo.io
app.waterloo.io
sni.cloudflaressl.com
demo.waterloo.io
waterloo.io
waterloo.io
waterloo.io

Certificate

The complete raw certificate details for waterloo.io in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAufRjUQZABsuE6kaMrlF1
Ob7aVzDPu1wwOUtLvaA7HKijvgks3VmqrvajolPJ67bKlJ69W2rLEBEaQQ43LVxI
6HCSDzAzbJcG3eNTbJfv5u1oWTSqsHkk56rlXDxYquBYvv7uOHD7VXN9TX4mSRVT
f59nz7blOKDZsEV0DUDuJuNhmsSoqRt0aXrSK7jSl6W0obayzJd234Fui8qbH0JP
OYFV/n4Pw9OjqzBVVRe531qQ9QelHlUuxkXf8RUoI+48XjhvZJcjHFyky14hPh7t
Ecr33g6iyFS7r+dS3121g+rfurFiGv9ZQChCVRA13ITxG8bn+HCYWHEJAfKrVeP4
GwIDAQAB
-----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 387856652464687307907661380302925557969072
 . . . . . . . . [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 2024-01-04 03:02:55 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-03 03:02:54 +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 'waterloo.io'
 . . . . . . . . [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 23474598610923900370065907424759898686723117469191572029257883362718636129667881733221905890193905264159494135402341394671902642465072230493068482346732947622665627313673932652152323820102538896855378078798391595965788662605888101328212911360974259740613122947249620738823751287571530292136006573192591795646784991817387714346967952916100789772675257738767284106769614329371503324657383132699553004085188894264189867148650461056104484566270190523086539593499851203812862124262715590940085507115354693452426550941374970217546802720288588995290657358538692829488246929872483604935817956219346381489721326303662305441819
 . . . . . . . . . . . . . . . . . . . . [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)
							25074b9b8a93b126f4feb214113550b81426a978
 . . . . . . . . . . . . . . . . [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 (32 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'waterloo.io'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.waterloo.io'
 . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018cd2a3709300000403004630440220405122039ff64ca0d1c8994bb8754e67125214e48543e93b67c14f2a917bd28b022047c5cbedb4aa0b627e588918a13bbbe8dac6fa68d19c83cd4298b95f949bc56a007700a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018cd2a3709c00000403004830460221009202c74752e5da582b18b4b572fe3a1acb08bc981c824e3c48a1d7235c01632f022100edd2185ba81c10abfe032a3652aa14cd717e2fa2d801f61495dee5b91db9fe71
 . . . . [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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