www.hotelabruzzo.net

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:34:06:e4:04:d2:2a:ea:93:41:dc:c9:9c:47:11:3e:65:a4 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.hotelabruzzo.net

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:34:06:e4:04:d2:2a:ea:93:41:dc:c9:9c:47:11:3e:65:a4
Serial Number (int): 279040700184608829972963205561737910576548
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 2e:99:63:71:58:0e:47:e8:82:a3:10:c6:f2:ef:db:07:0c:4f:b5:8a
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 70:0f:09:e7:b7:dc:93:49:02:de:30:4b:e1:d7:3e:08:1c:e7:42:21
Fingerprint (sha256): 3e:f4:27:5e:36:1d:07:2f:07:b1:d9:2c:0c:26:34:a6:84:10:3b:92:87:11:1e:42:20:24:9e:d0:ff:2e:2d:12

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.hotelabruzzo.net

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.hotelabruzzo.net

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.hotelabruzzo.net

Other certificates including the domain name hotelabruzzo.net

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.hotelabruzzo.net 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 279040700184608829972963205561737910576548
 . . . . . . . . [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 2019-05-27 07:10:47 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-25 07:10:47 +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.hotelabruzzo.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 959867474044042519529973155753268663642461402302513867775131199225004445625511336569969380373211700704647104468134347311513797668069844133288900552890789545036405592785697741630179656628357199011399486902974858845518241756195587573857015796879459092363109073720846434848869621621850879135066026996096579951395580727265902633551856534666983707223527097978032563129076122827046040875148407692633275135727396608759784267912162057229598866369385774719606981020066529194597193471800631209983055382198638363136022654713037171261474661341127971183629569292296944187736045398212982729157501996023275378525073528758858738401784626513729683359446886132573684357289770452312441892417298253403292346715024006533272502125509484595279750172589279494864123374385739528547785041109313861791058720252102338075085408625593517049512596063220522132611498399455924776949177607922198947411128774322977334728946489514597311733223432446086661315879974096261160247919378806261145829609797451252317157507697706747014567839693705947235861272891253099988362636899399592647765332509146276705958139177721836275104628054882416292832933611564049561655425089711390064547745523879333904798606673828618434601198678755058774262197989131419098787074621727158956697006637
 . . . . . . . . . . . . . . . . . . . . [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)
							2e996371580e47e882a310c6f2efdb070c4fb58a
 . . . . . . . . . . . . . . . . [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 (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.hotelabruzzo.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)
							00f1007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016af85789ef000004030047304502203f1c5a2d0de5eb62fa6777beb9aabfe8d645524296ae128c7c03d3e39fc5367b022100ce5c9e197e35712464d2b3a66c61aa496c89c7dd822ef0a501e7e90e964a62d7007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016af85789bc0000040300483046022100d3c4fe7d6380af0b7abb6177fad4780a173611279aaaa092d3d9e6ed33320230022100fbaf1d1ce7fb41e704bc7ec45bb98faa29a46c657bf811502ee25a0e48614fb7
 . . . . [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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