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76
Total
75
DNS
90
Email
92
Security
35
Network
60
Availability
Domainkobo.com
IPv42
IPv60
MX records1
StatusActive
Domain technical report

Challenged | Kobo.com

kobo.com

Generated: 2026-08-09T00:07:28-05:00 · Cached result

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IPv42
IPv60
MX1
NS4

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

2 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

4 NS record(s); 2 or more required.

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

!
DNSSEC chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

✓
CAA policy5 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

1 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

✓
DKIM20 / 20 pts · Mail

A DKIM selector was verified.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

87 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers27 / 35 pts · Security

7 of 9 evaluated headers detected.

!
PTR reverse DNS0 / 30 pts · Network

PTR not detected.

✓
IPv4 diversity35 / 35 pts · Network

Two or more IPv4 addresses receive full points.

!
IPv6 connectivity0 / 35 pts · Network

AAAA availability.

✓
DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

!
HTTP response0 / 40 pts · Availability

HTTP/2 403

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

2 record(s)
172.64.150.101
104.18.37.155

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
5 kobo-com.mail.protection.outlook.com.

TXT

15 record(s)
"fastly-domain-delegation-fddelt00540045-10-22-25"
"google-site-verification=TPfQLJMxDmDJ7QLK1G7_9WKCyT33Zd4OKl8Y3xcVUmA"
"hj-ownership=fvkv30Fnyx78b9M"
"status-page-domain-verification=9t2wdqtpqygk"
"google-site-verification=fubvUR2vWX0-_N-3h9Q6fR9el0Vi-OPTf-ysDQ2alrU"
"v=spf1 mx include:spf1.kobo.com include:spf.protection.outlook.com include:_spf.alchemer.eu include:stspg-customer.com include:_spf.mlsend.com include:shops.shopify.com include:mail.zendesk.com include:amazonses.com ~all"
"MS=ms57345456"
"google-site-verification=Q25CMQs0FyZeTBTcsd2e3pVmeINoplPPcC0OyZp-cYw"
"google-site-verification=3aKt7utuf138msKSFHlGaxHSWaUfmh7xexzcZNtlSN0"
"google-site-verification=TMvqQdCrWZE_zq_PIvMaWObopFipEhVGM3-NQ1D5qfY"
"eI4nDhTkhHLFkVn2I0H86PYkbQzHr26YA6ndMom0SKIrZENOFNfL3EFFlWHcp+r4uBL1NDg63BxMrflvKQkl+w=="
"google-site-verification=SN46x048vtTZTeC4pcKIeVtbSbhp22YtkZIaMnlEWKY"
"facebook-domain-verification=asza9zmotc5y3jf2vvxuox1fh4zwal"
"ca3-763497e7b6ed42dab28acd1f86e299cf"
"17c61b51fd3e47faa7bbb0cb888ecbb0"

NS

4 record(s)
ns-cloud-e4.googledomains.com.
ns-cloud-e1.googledomains.com.
ns-cloud-e2.googledomains.com.
ns-cloud-e3.googledomains.com.

SOA

1 record(s)
ns-cloud-e1.googledomains.com. cloud-dns-hostmaster.google.com. 3 21600 3600 259200 300

CAA

3 record(s)
0 issuewild "pki.goog"
0 issuewild "letsencrypt.org"
0 issuewild "sectigo.com"

DS

0 record(s)
—

Not configured

DNSKEY

0 record(s)
—

Not configured

RRSIG

0 record(s)
—

Not configured

NSEC

0 record(s)
—

Not configured

NSEC3

0 record(s)
—

Not configured

SRV

0 record(s)
—

Not configured

NAPTR

0 record(s)
—

Not configured

TLSA

0 record(s)
—

Not configured

SSHFP

0 record(s)
—

Not configured

SPF

Configured
v=spf1 mx include:spf1.kobo.com include:spf.protection.outlook.com include:_spf.alchemer.eu include:stspg-customer.com include:_spf.mlsend.com include:shops.shopify.com include:mail.zendesk.com include:amazonses.com ~all

DMARC

Configured
v=DMARC1; p=reject; rua=mailto:kobo-DMARC_Report@mail.rakuten.com,mailto:dmarc-report-a@rx.rakuten.co.jp

DKIM

Selector s1
k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwI/J1oDcsy/XiVEfHAsJsAlnbhXmDbXJYXLdeSo0RRX+AetKcZ4EVg6D9eDvQ4pyvkqh35FYBeVzFopay5KUszQq2wuCDPt6Ujm16rg0eEiJU4NlYOIcVx4zq0k2XiY/zdWrRBrE250gacb3l2np3dDJ6qaIAwmvTdpxWZS+QHbI9cQI6/wsGo15ttrdrUF6bqHyn0BomGFN9l4I3631UKjR53k6P+Ya3V+cVrFzm6vA4JxRtQBn0y1yAp4aGyp/iWZfJHnS/2T6J6LUwhm2+zamUrFGD3xogSjMwrsr5YRFC+VS6kIuAW19oxcqEySLcoYbXHyYiZ9+x8qqFFtJhQIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Challenged | Kobo.com
Description
Final URL
https://www.kobo.com/
HTTP status
403

HTTP

Status
HTTP/2 403
Final URL
https://www.kobo.com/
Version
3
Server
cloudflare
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Let's Encrypt
CN
kobo.com
Valid from
2026-08-06T03:35:13-05:00
Valid until
2026-11-04T02:35:12-06:00
Days remaining
87
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

7 active
—
HSTSNot detected
—
Content Security PolicyNot detected
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
✓
Referrer PolicyImplemented
✓
Permissions PolicyImplemented
✓
Cross-Origin-Opener-PolicyImplemented
✓
Cross-Origin-Embedder-PolicyImplemented
✓
Cross-Origin-Resource-PolicyImplemented

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
104.18.37.155, 172.64.150.101
101,23 ms
Cloudflare
1.1.1.1
104.18.37.155, 172.64.150.101
98,37 ms
Quad9
9.9.9.9
104.18.37.155, 172.64.150.101
72,74 ms
OpenDNS
208.67.222.222
104.18.37.155, 172.64.150.101
76,77 ms
AdGuard
94.140.14.14
104.18.37.155, 172.64.150.101
65,50 ms

IP, geolocation and ASNAssociated network information

172.64.150.101

No data
success
No
country
region
city
asn
organization
isp

104.18.37.155

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No

SMTPEmail port connectivity

kobo-com.mail.protection.outlook.com

Port 25: Closed/unreachable - 26.6 ms - 
Port 465: Closed/unreachable - 4040.1 ms - 
Port 587: Closed/unreachable - 4030.6 ms -

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