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78
Total
80
DNS
65
Email
73
Security
70
Network
100
Availability
Domainzmescience.com
IPv42
IPv62
MX records7
StatusActive
Domain technical report

ZME Science: not exactly rocket science

zmescience.com

ZME Science publishes daily news and features about the latest research in science and technology.

Generated: 2026-08-09T17:48:07-05:00 · Cached result

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IPv42
IPv62
MX7
NS2

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

2 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

2 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

2 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 policy0 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

7 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

!
DMARC0 / 25 pts · Mail

DMARC policy not found.

✓
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

64 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 DNS0 / 30 pts · Network

PTR not detected.

✓
IPv4 diversity35 / 35 pts · Network

Two or more IPv4 addresses receive full points.

✓
IPv6 connectivity35 / 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

2 record(s)
104.21.5.207
172.67.133.214

AAAA

2 record(s)
2606:4700:3032::ac43:85d6
2606:4700:3034::6815:5cf

CNAME

0 record(s)
—

Not configured

MX

7 record(s)
30 aspmx4.googlemail.com.
20 alt2.aspmx.l.google.com.
20 alt1.aspmx.l.google.com.
10 aspmx.l.google.com.
30 aspmx5.googlemail.com.
30 aspmx2.googlemail.com.
30 aspmx3.googlemail.com.

TXT

6 record(s)
"tollbit-domain-verification=8ad8ff589aa25defa280dbde76283c917c6cfcbea7c4b4dc978c176a328a36a5"
"google-site-verification=XdTSKGDK9Ob-Yg_gH2015OlNbQtbKCw81mPqBm2YnKk"
"mailerlite-domain-verification=67c08c0ac50c2d2dc0b71977c9aa17d279574fc5"
"_globalsign-domain-verification=n0b8SvOmFjFo5XsQryM_ctBNsI3-rVwKtYMU7d5YlX"
"_globalsign-domain-verification=XDoFXILIsbNXk4wO5FOXicvMUfz9Vmmi8PEIZhZHQs"
"v=spf1 include:_spf.mlsend.com mx include:sendgrid.net include:_spf.google.com a ~all"

NS

2 record(s)
dorthy.ns.cloudflare.com.
dilbert.ns.cloudflare.com.

SOA

1 record(s)
dilbert.ns.cloudflare.com. dns.cloudflare.com. 2411050631 10000 2400 604800 1800

CAA

0 record(s)
—

Not configured

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 include:_spf.mlsend.com mx include:sendgrid.net include:_spf.google.com a ~all

DMARC

Not configured
—

Not configured

DKIM

Selector k2
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA0b90ObWaLDc+i9MtTNmGeWO009hr20fIxhGg6XBT2kjZ1DTThopSe1nAndsupmcBwlQ5Q6LJ+ZAxLcujnPIxM0ZBLmgpkv8u6RfY4eFP8OLvdAW3oSuB0DyLDigQX4Sj8wBO4YIdQH6AAmBeOsidsKAFNFUCpc3vCxtBDR12U+cBg724l3sBkMQ8evnz6idnqxq9QAVYh8k4kJ+RP+6cqTdy7LjIm8xY/bQNpQIpGUAuDo2DjLcCDun9DAI4Q/3z+Q0o9QuQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
ZME Science: not exactly rocket science
Description
ZME Science publishes daily news and features about the latest research in science and technology.
Final URL
https://www.zmescience.com/
HTTP status
200

HTTP

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

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Google Trust Services
CN
zmescience.com
Valid from
2026-07-15T09:55:01-05:00
Valid until
2026-10-13T10:54:56-05:00
Days remaining
64
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

2 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
—
X-Content-Type-OptionsNot detected
—
X-Frame-OptionsNot detected
—
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
104.21.5.207, 172.67.133.214
63,69 ms
Cloudflare
1.1.1.1
104.21.5.207, 172.67.133.214
50,67 ms
Quad9
9.9.9.9
104.21.5.207, 172.67.133.214
92,37 ms
OpenDNS
208.67.222.222
104.21.5.207, 172.67.133.214
72,67 ms
AdGuard
94.140.14.14
104.21.5.207, 172.67.133.214
81,13 ms

IP, geolocation and ASNAssociated network information

104.21.5.207

Identified
success
Yes
country
United States
country_code
US
region
California
city
San Francisco
latitude
37.7749113
longitude
-122.4185412
asn
13335
organization
Cloudflare, Inc.
isp
Cloudflare, Inc.
timezone
America/Los_Angeles

172.67.133.214

Identified
success
Yes
country
United States
country_code
US
region
California
city
San Francisco
latitude
37.7749113
longitude
-122.4185412
asn
13335
organization
Cloudflare, Inc.
isp
Cloudflare, Inc.
timezone
America/Los_Angeles

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

aspmx4.googlemail.com

Port 25: Closed/unreachable - 23.6 ms - 
Port 465: Closed/unreachable - 4052.9 ms - 
Port 587: Closed/unreachable - 4021.1 ms -

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