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Total

DNS

Email

Security

100

Network

Availability

Domaincdc.gov

IPv42

IPv62

MX records4

StatusActive

Domain technical report

Centers for Disease Control and Prevention | CDC

cdc.gov

Generated: 2026-08-08T17:14:54-05:00 · Cached result

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IPv42

IPv62

MX4

NS6

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

6 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 propagation0 / 10 pts · Dns

Agreement between public resolvers.

✓

MX records20 / 20 pts · Mail

4 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

84 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers4 / 35 pts · Security

1 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: a23-54-76-141.deploy.static.akamaitechnologies.com

✓

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 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)

23.54.76.141
23.54.76.147

AAAA

2 record(s)

2600:1407:7400:5f::17d1:5ee6
2600:1407:7400:5f::17d1:5ee8

CNAME

0 record(s)

—

Not configured

MX

4 record(s)

20 alt1.us.etp.fireeyegov.com.
30 alt2.us.etp.fireeyegov.com.
10 primary.us.etp.fireeyegov.com.
40 alt3.us.etp.fireeyegov.com.

TXT

25 record(s)

"dtm-domain-verification=KQ1rIgUP8GpiV9mSmysS40YKtHjVrI0VF938cuCAWXQ"
"MS=ms84056562"
"amazonses:OhxI8Nxovqf1xBmhK5S9kNk7vo9XV4GmGe6LVc+ji80="
"geneious.com:domain-verification=DP8tae0qCr-FH6KGRvMwWA"
"google-site-verification=qZbBdujV5kZQv_pCqV2wpfSU25odH35HQukm5ACyLNs"
"apple-domain-verification=VOKePKhT9MhX9zmq"
"_v0e31vq52ru6qgumyh95pylxoe5kmby"
"google-site-verification=nZIK8Rc0sw4MxlgnsYseSBTdcyDXeLFR6P5FIAbgSEM"
"openai-domain-verification=dv-hbgCCuVm9CpZSVXjvFPfivD5"
"atlassian-sending-domain-verification=977cbfcd-c314-42dc-9d86-32e2abca00ac"
"268BC041572123F15C5566E5F3D88675FABCC028427B501AE228CA9BB31630D5"
"atlassian-sending-domain-verification=f2ef9649-6a78-47f6-9990-44a295ae5b5a"
"atlassian-domain-verification=i5oCgfh8OkdKw7Yv2CCKvAdKMW8kYpNVO1A7fcUkBdAy7IzdP/M8D9NoirnaVqZC"
"google-gws-recovery-domain-verification=42225222"
"4FF7-1931-E8C2-912B-94CF-BCB0-806A-7442"
"v=spf1 ip4:51.5.72.0/24 ip4:172.81.81.38 ip4:51.4.72.0/24 ip4:51.5.80.0/27 ip4:51.4.80.0/27 ip4:172.81.81.50 ip4:172.81.82.50 ip4:63.123.152.4 ip4:40.92.0.0/15 ip4:172.81.82.79 ip4:172.81.80.64 ip4:172.81.81.39 ip4:172.81.82.87 ip4:172.81.82.88 ip4:155.95" ".96.50 ip4:155.95.86.50 ip4:23.90.98.102 ip4:124.17.27.36 ip4:149.72.0.0/16 ip4:198.21.0.0/21 ip4:50.31.32.0/19 ip4:167.89.0.0/17 ip4:68.232.140.57 ip4:68.232.140.79 include:_s0.cdc.gov -all"
"_bthbaxy8p6mr5c0o5r7pit3d25lgztb"
"adobe-idp-site-verification=4089552e88740d878b0400d184ab01c0b7391e6dc85796732000450e3476fc93"
"v4ixju/hXVFXszYswwinkbStpHoDb361lQekI6rkjQ2DV4HHKdN/FJPvMAO88x1rTaRwf29UYwPAq6LqldNWZQ=="
"google-site-verification=GkbnFA_aF3RXaZOC3deEsrGqs0fmTXyys2hbIn1nVcM"
"_mhpeli9n9zj3rasw6wfiuch30t2sjlw"
"_ddb344bjip99et71u5cidtx1t53ezdl"
"identrust_validate=B/Pm/IvNx8tLDDFRsJXBs+oweQGmx08QZ6xK0IvBQn3R"
"ZOOM_verify_yEK5MgTwT72nP5URz-eoaA"
"atlassian-domain-verification=qjHCJ33pyZHmggxdcFDtGiegrc/iLSyVUIG0LAu1g7XW1JnMdaY8G8pbMUY1Z4hm"

NS

6 record(s)

a9-64.akam.net.
a5-66.akam.net.
a8-67.akam.net.
a28-65.akam.net.
a1-43.akam.net.
a2-64.akam.net.

SOA

1 record(s)

a1-43.akam.net. hostmaster.cdc.gov. 746129459 10800 3600 604800 3600

CAA

0 record(s)

—

Not configured

DS

1 record(s)

30024 13 2 B8B55AE32D127497A5E95F95F30A957A3EEAFA0ACA08EB08A5F4D7CD 602B10DE

DNSKEY

3 record(s)

257 3 13 eGwDerRgxfLfPuVz7NXPZxo7VCj3bdtngGoGZ02egxIqneNqX66jf4se xast/uMzwwQod0ICtNDWZSpPNAnXFA==
256 3 13 3diyA/byu99GguHnydxGk4c7KtPPjVflmFnLfCTKuGPR2KkeDrtwSd5T 1zpdNhESLsdP/9jyyZEShywnnr8nOg==
256 3 13 +bg2C0ZFWuo23W5TfBiB/9ajwJcOgCMJG8UNUwPxKcj3XfNjowHNFokc BuOzCgK4h1U8o7IFvsYrSqnEZMgDhw==

RRSIG

8 record(s)

NS 13 2 300 20260811202427 20260808192427 56802 cdc.gov. +LK11p9tQ1pjoviqqkOZUV8vrsBVa28fTyo+1Y1e3rnHMh7Oi6gNSfPU ljZf59b2eG2/+xdLy1dOJv6C7GmBXA==
TXT 13 2 1800 20260811202427 20260808192427 56802 cdc.gov. tiB93ttCb1C/7s8nBZU0cHRQNOYOk26XqbLWhxfvUW8fdXz2efaL9Qfp yS7hK822Sd2q9yuo9uxzfrEaolfgNA==
SOA 13 2 3600 20260811202427 20260808192427 56802 cdc.gov. nb8xblrcyt9/FEjqWNd7s3BSonbSSLRPMWQPJ5Z2/Z4OWqv0OwYmcYYz tk+3OARpymq1A1sf1y3DmiLOr0GaWg==
DNSKEY 13 2 7200 20260811202427 20260808192427 30024 cdc.gov. nlOdrv9up/9Mncj2AFsL7uI+Gyc1OqAn3sqYHI/t7c6KhDSdVtcFv8ED 8RQmWmJrPuBdgJ4UIgz6rQbIRzUmUQ==
MX 13 2 300 20260811202427 20260808192427 56802 cdc.gov. nu307sXnyWATRsPq/xgyv+MjocYQuMhQ2vh6y5m79KW4SVCZWblQRgID GUhXhqgdpQUrgleINyNX82GFwWCMdA==
A 13 2 20 20260811202427 20260808192427 56802 cdc.gov. GhvoTrvHmv6Oms4ajesRd12o7UJlbzfZXTYUgrj9Voq0ol9xYvRxckH5 +2LTmwKyxjIIqtlWaps6Kgpw0t5UxA==
DS 13 2 3600 20260809231444 20260807211444 35496 gov. Z2DPBsMMNlBO8mrNlG6zd7o0QU8+naYq3K0bEnu3s9Kw4KMERnwPIgZD 41mvN4l7ls0gLmnHEmjjraQTzd50Jg==
NSEC3PARAM 13 2 3600 20260811202427 20260808192427 56802 cdc.gov. //JrQybYV3hK3CSfRGHf4O7vYVzzb1+8NQlb7Ma5AzrSMCvcj52s5qZM 0VPeTPnt5MXKEoO6qRdLVxR/C4dbYQ==

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 ip4:51.5.72.0/24 ip4:172.81.81.38 ip4:51.4.72.0/24 ip4:51.5.80.0/27 ip4:51.4.80.0/27 ip4:172.81.81.50 ip4:172.81.82.50 ip4:63.123.152.4 ip4:40.92.0.0/15 ip4:172.81.82.79 ip4:172.81.80.64 ip4:172.81.81.39 ip4:172.81.82.87 ip4:172.81.82.88 ip4:155.95.96.50 ip4:155.95.86.50 ip4:23.90.98.102 ip4:124.17.27.36 ip4:149.72.0.0/16 ip4:198.21.0.0/21 ip4:50.31.32.0/19 ip4:167.89.0.0/17 ip4:68.232.140.57 ip4:68.232.140.79 include:_s0.cdc.gov -all

DMARC

Configured

v=DMARC1; p=reject; fo=1; ri=3600; rua=mailto:8idhoybh@ag.us.dmarcian.com,mailto:reports@dmarc.cyber.dhs.gov; ruf=mailto:8idhoybh@fr.us.dmarcian.com;

DKIM

Selector selector1

v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxc86u7V3s8hHRBCjAlB162wGauXlxdG2jTTrb/cZ+Mhxi72S6MImgcjQ7TohgGB+7IF5UHN2xVL3IJyaNcAN7zFfsMhImt3TbS3MrDlkATLvVavOKsxmKGCh/jUJFUSYsalATaC8tdVtkC64j2XWOUhmTJsc4CUxeuiKNuAH2XUDflMpc2W4cTKkA5htlmyU+++Vn+gPxYZM2e0UQ3zGBME6ut2JxWnkYzVGBlIzj6g7WE6aHiStlpM67gpHdBXQcXIaC/V45qF3v462VfXxODx+ubRgN+NhxrvsMotcimlQG94qIUWPnRA/VJm8WHd5Mz1De+Q1YrNmGOX0U/BFmQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Centers for Disease Control and Prevention | CDC

Description

Final URL

https://cdc.gov/index.html

HTTP status

206

HTTP

Status

HTTP/2 403

Final URL

https://cdc.gov/

Version

Server

AkamaiGHost

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

DigiCert Inc

*.cdc.gov

Valid from

2026-04-15T19:00:00-05:00

Valid until

2026-10-31T18:59:59-05:00

Days remaining

Protocol

TLSv1.3

Cipher

TLS_AES_256_GCM_SHA384

Security headers

1 active

✓

HSTSImplemented

—

Content Security PolicyNot detected

—

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

Review

Differences detected

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

23.54.76.141, 23.54.76.147

70,95 ms

Cloudflare

1.1.1.1

23.213.53.47, 23.213.53.78

50,76 ms

Quad9

9.9.9.9

23.212.185.144, 23.212.185.152

52,69 ms

OpenDNS

208.67.222.222

23.54.76.141, 23.54.76.147

54,28 ms

AdGuard

94.140.14.14

23.48.224.202, 23.48.224.207

80,82 ms

IP, geolocation and ASNAssociated network information

23.54.76.141

No data

success

country

region

city

asn

organization

isp

23.54.76.147

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

alt1.us.etp.fireeyegov.com

Port 25: Closed/unreachable - 16.3 ms - 
Port 465: Closed/unreachable - 4011.3 ms - 
Port 587: Closed/unreachable - 4028.5 ms -

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