mail.guifi.net

Issued by R3

About this certificate

This digital certificate with serial number 04:90:a8:82:f0:b9:9b:87:99:85:b5:b2:cc:0d:3d:d4:59:56 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=mail.guifi.net

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:90:a8:82:f0:b9:9b:87:99:85:b5:b2:cc:0d:3d:d4:59:56
Serial Number (int): 397673794748023249767497432285975084816726
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 6a:8f:23:1d:61:10:63:35:92:cf:cb:0b:4a:cd:10:3d:6b:03:4b:55
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 1e:35:23:a7:c9:74:4b:54:34:f2:28:f3:8b:a1:eb:11:59:1b:5e:20
Fingerprint (sha256): 31:42:95:93:7c:6c:14:57:ba:28:82:73:a6:eb:1f:09:d1:dd:bc:84:3e:07:bd:e4:bf:b3:68:79:70:03:8c:00

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

Revocation information

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

Check the revocation status for certificate mail.guifi.net

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mail.guifi.net

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

mail.guifi.net

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elx.guifi.net
noblezabaturra.org
noblezabaturra.org
fiberfy.io
matrix.guifi.net
noc.guifi.net
noblezabaturra.org
noblezabaturra.org
fcoord.guifi.net
fundacio.guifi.net
llistes.guifi.net
matrix.guifi.net
madrid.guifi.net
guifi.net
www.guifi.net
noblezabaturra.org
guifi.net
riot.guifi.net
guifi.net
www.campus.guifi.net
retroshare.guifi.net
castello.guifi.net
llistes.guifi.net
polr.fcoord.guifi.net
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fundacio.guifi.net
matrix.guifi.net
gis.guifi.net
riot.guifi.net
dev.guifi.net
noblezabaturra.org
matrix.guifi.net
mallorca.guifi.net
owncloud.guifi.net
nosekefik.qui.guifi.net
mail.guifi.net
sevilla.guifi.net
audit01.guifi.net
ribagorza.guifi.net
elx.guifi.net
guifi.net
noc.guifi.net
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elx.guifi.net
mail.guifi.net
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Certificate

The complete raw certificate details for mail.guifi.net in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxm3CBGhy0ri5mJZzxIIU
eTBq37lZbpHaF5fwixRB/086jT6eLoijyBrgs7UrBcAbHBhvPIEVrq/1W45V3nV1
z6UEzTcBRmkRgY5bIaDlqS0wV45boB6ImqSqMPUZOUJUiBCwVH5/R6ro6af020fN
YD0o1AFuQbOu0J1anjExl5QjG5EErFWISC8+lkGuqaSZwec1yymi3h/G5XLVRaME
IDqpXg6ouDGn3xnIypUbsDTjkyyOHNW4T65U8IKb8HdIrbkfX95VFQxW4ewG/lT9
e1WgwOMZ/SztXKLEU309+HYvw3Zy2n1fo8EEsAef6zJUDsfntRXG8Fdr/JOaFHma
5QIDAQAB
-----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 397673794748023249767497432285975084816726
 . . . . . . . . [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 2021-03-07 00:41:56 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2021-06-05 00:41:56 +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 'mail.guifi.net'
 . . . . . . . . [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 25049308011004874933487862636892356204576042210749648661013445385657678668642373052973078393880314111615527000228616801353687627687917318269767829830923329960124242757927204557604556788395646519362322113904186536872325290774859401977320984941269973694216385882343063991891168245193575221937782421657321374395226785558027414447827020335265377754711557541870398661297264334164929881600435353895700249319823063020414589306549074670454073454636472734592990776773699720829843565384361979691783207249551499495268052648674918503297416014766249011286593784973141286474644290501392262093315612456059206931816243441498871929573
 . . . . . . . . . . . . . . . . . . . . [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)
							6a8f231d6110633592cfcb0b4acd103d6b034b55
 . . . . . . . . . . . . . . . . [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 (18 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.guifi.net'
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10077006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d913000001780a5920170000040300483046022100b26388f0ea8a86bd4838aa0a9a9044b366b1cdaca694911a47af1fed0359a3b9022100e3e47a5de7bc2ba9ea043fd3ebc80dc510d339050bd6612bf7583e2bee5458b20076007d3ef2f88fff88556824c2c0ca9e5289792bc50e78097f2e6a9768997e22f0d7000001780a5920720000040300473045022001e6f8112ce8cf8148d7708828055c8aa66154172100c11f8cbe639ab78ac8d10221009c2e61e336a7a640385479b394165849c8a5652b134832f2256b73cc4fb718c7
 . . . . [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)
		009f02b72c426eb76023151e23fac01ca7ab490537ba18c86240b55ce85ab0270bdd5765a85927ca1ad0fee1dd7bde4ee21a83f129b5836b862c0031a484a74c3e4c49fe03606b497d29e0035ed9143d2ef6a1cc6657d2aae18c7f098d9d99a1f23e7bb9c07ba62defcdd831223208050250e8d7617b6e3c0ba29ccf15303b404ff415f222e73c3d891d6ec9f72a5d371e1e20f8488b6fb0bdc633e380337db6a7185f3ea2c00017bc708a930b195342c7031e0aa7fb41caf160b421678723d9a2663acf03d0834e336e6d2096634663121af0412aa62dbff336d2103e8b544606ce6dd05595a1a66cc199fe670a29c716040e70ba12b9cd30521a99ade1d1cc08