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82
Total
85
DNS
90
Email
73
Security
50
Network
100
Availability
Domainsymbaloo.com
IPv41
IPv60
MX records3
StatusActive
Domain technical report

Symbaloo: Bookmarks & Favorites - The #1 Homepage for Educators

symbaloo.com

Easily save, share, and organize your favorites with Symbaloo; the best online bookmark manager for educators. Use Symbaloo as a homepage on any browser or Internet-enabled device. Create a free account today!

Generated: 2026-08-09T08:45:58-05:00 · Cached result

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IPv41
IPv60
MX3
NS3

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

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

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

✓
DNSSEC chain15 / 15 pts · Dns

DS and DNSKEY detected.

!
CAA policy0 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

3 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

43 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers8 / 35 pts · Security

2 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: symbaloo.com

i
IPv4 diversity20 / 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 response40 / 40 pts · Availability

HTTP/2 200

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
185.150.184.223

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

3 record(s)
10 mx.spamexperts.com.
30 lastmx.spamexperts.net.
20 fallbackmx.spamexperts.eu.

TXT

6 record(s)
"zoho-verification=zb84222912.zmverify.zoho.eu"
"globalsign-domain-verification=XDGVJW6fNmLM6aP-zbHSMfVL66mt_vdumpIjQclEzW"
"facebook-domain-verification=68snn4chhxvlgn95o6etjp1quj0f6f"
"MS=ms20731405"
"v=spf1 mx a ip4:87.233.242.240 ip4:85.17.118.219 ip4:87.233.165.0/24 include:user.zohobookings.eu include:eu.zcsend.net include:amazonses.com include:one.zoho.eu include:mailer.trainercentral.eu ~all"
"google-site-verification=TZqlPPZaGfgOySrMd60rLJ23IEqgXO2f461qjUOAQR0"

NS

3 record(s)
ns3.openprovider.eu.
ns2.openprovider.be.
ns1.openprovider.nl.

SOA

1 record(s)
ns1.openprovider.nl. dns.openprovider.eu. 2026062303 10800 3600 604800 3600

CAA

0 record(s)
—

Not configured

DS

1 record(s)
27829 8 2 899844C609432C9E6735CDD0E211B7E8382EBFD444BE5339FC370618 A3B9343C

DNSKEY

3 record(s)
257 3 8 AwEAAcvVVt6O1EOV2OMCwLTxEScNUMiCcxhpZ7o85VaQXNs8pz8Z531d iGqHgOxBAOBW/RTj4liwiwDygiwfUsgkv2zwBnzKm+bFUo3Vn5fJryuD ZV/J6mXmGbE9Bpea+Nq0yjurIli4uSRbu/MlYpQEUXDE8FzVz3wXE5qv kifgt6e74cc1whxL92IHB1PPUWNuWihrgy+wXD8V9AVb0W7Y7oYKbKGH lIk7WDF0XjaDgc/rH7UdiN/SvobEsUwbQACP0gCkUmjadnfFX9DNyRfa O2uNDoI3FXa2b4Yrqzjgt72Qse4m50HS8i6fOakr+yPdfg5VWxt54Qyz D2PMrEEFFnM=
256 3 8 AwEAAcjfHv9quWbZ1BR8qjRmVzxfXjM5rHywT4hc/oNxE3nTg1xOwbN3 L2JpgOURf21G4O3Pc2S2GE9lY2hT/6DSLdn8BHY7Q9oipe9wfH0nY2Fx KgsC6onQ6Ov29ER81lqJGTb3HKTeAy6Pc3leNViiM3xk23bcpqyvwCzb n/37k34J
256 3 8 AwEAAbZHY+XkZlGz6Csj0NqwqV96n7mcuAOMwYrV9tUb1QPT2NSW0h85 jxJAM/7lpc2ZZDV+loHlOFdZNvBL8cheZAakbd5cbIKszdtCi9COyB4S XaLs0Hd62c/Dd7eLq0soxtyOhCFMbMWcpyqmbgUS59epBFZPFDd31uOj OtslpT3R

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 a ip4:87.233.242.240 ip4:85.17.118.219 ip4:87.233.165.0/24 include:user.zohobookings.eu include:eu.zcsend.net include:amazonses.com include:one.zoho.eu include:mailer.trainercentral.eu ~all

DMARC

Configured
v=DMARC1; p=none;rua=mailto:dmarc-rua@symbaloo.com

DKIM

Selector mail
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDS3F75u1FzQvGM+Sz/E7ZkqqZojuM+pNJdnhJ8Rf8Hu9+fkxGa3LfWVAw3QYBRb0cKvU6KGDUBBERp/98wYjADXIYay77uMCvOtOdXn7e0rgVmyr5AqHITwN3c8OYHpJRgE6ju9f2T/xlgNS5DPGHMVbACMF9MgH7eR8+uZRucnwIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Symbaloo: Bookmarks & Favorites - The #1 Homepage for Educators
Description
Easily save, share, and organize your favorites with Symbaloo; the best online bookmark manager for educators. Use Symbaloo as a homepage on any browser or Internet-enabled device. Create a free account today!
Final URL
https://www.symbaloo.com/
HTTP status
200

HTTP

Status
HTTP/2 200
Final URL
https://www.symbaloo.com/
Version
3
Server
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Sectigo Limited
CN
*.symbaloo.com
Valid from
2025-09-05T19:00:00-05:00
Valid until
2026-09-21T18:59:59-05:00
Days remaining
43
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

2 active
✓
HSTSImplemented
—
Content Security PolicyNot detected
—
X-Content-Type-OptionsNot detected
✓
X-Frame-OptionsImplemented
—
Referrer PolicyNot detected
—
Permissions PolicyNot detected
—
Cross-Origin-Opener-PolicyNot detected
—
Cross-Origin-Embedder-PolicyNot detected
—
Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
185.150.184.223
85,59 ms
Cloudflare
1.1.1.1
185.150.184.223
244,35 ms
Quad9
9.9.9.9
185.150.184.223
55,17 ms
OpenDNS
208.67.222.222
185.150.184.223
33,92 ms
AdGuard
94.140.14.14
185.150.184.223
129,82 ms

IP, geolocation and ASNAssociated network information

185.150.184.223

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

mx.spamexperts.com

Port 25: Closed/unreachable - 16.5 ms - 
Port 465: Closed/unreachable - 73.6 ms - 
Port 587: Closed/unreachable - 58.3 ms - 220 mx200.antispamcloud.com ESMTP Exim 20260804.1000 Sun, 09 Aug 2026 15:45:57 +0200

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