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Total

DNS

Email

Security

Network

100

Availability

Domaincambridgema.gov

IPv41

IPv60

MX records2

StatusActive

Domain technical report

Welcome to the City of Cambridge

cambridgema.gov

Find all you need to know about living in, working in, and visiting the city of Cambridge.

Generated: 2026-08-12T15:31:50-05:00 · Cached result

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IPv41

IPv60

MX2

NS2

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

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

2 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

60 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: cambridge911.us

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)

204.167.92.20

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

2 record(s)

10 mxa-00433301.gslb.pphosted.com.
10 mxb-00433301.gslb.pphosted.com.

TXT

5 record(s)

"v=spf1 mx a ip4:204.167.92.25 ip4:204.167.92.26 include:spf.protection.outlook.com include:spf-00433301.pphosted.com" " include:spf-009c9501.pphosted.com include:aws.us1.spf.staffbase.com  ip4:209.61.151.0/24 ip4:166.78.68.0/22 ip4:198.61.254.0/23 ip4:192.237.158.0/23 " " ip4:23.253.182.0/23 ip4:104.130.96.0/28 ip4:146.20.113.0/24 ip4:146.20.191.0/24 ip4:159.135.224.0/20 ip4:69.72.32.0/20 ip4:104.130.122.0/23 " " ip4:146.20.112.0/26 ip4:161.38.192.0/20 ip4:143.55.224.0/21 ip4:143.55.232.0/22 ip4:159.112.240.0/20 ip4:198.244.48.0/20 ip4:204.220.168.0/21 " " ip4:204.220.176.0/20 ip4:141.193.32.0/23 ip4:159.135.140.80/29 ip4:159.135.132.128/25 ip4:161.38.204.0/22 ip4:87.253.232.0/21 " " ip4:185.189.236.0/22 ip4:185.211.120.0/22 ip4:185.250.236.0/22 ip4:143.55.236.0/22 ip4:198.244.60.0/22 ip4:204.220.160.0/21 -all"
"clio-domain-verification=dab536f96d3193623d785a3632062f97"
"apple-domain-verification=QaoKXDSNETnfnXZj"
""
"benq-domain-verification=eyJpdiI6Ik15dWRiS2hMY28zSWZ3SEh0LzRFamc9PSIsInZhbHVlIjoidmxoaFFtMnFJN1d4RUtFMVBoa3hzY2xBWWFUaVc0MythTVpGczdRVEFVST0iLCJtYWMiOiI4NTA4MDU5ZGE0ZTdmOTYyYWVkODY4YWIyYjA4MjM4ODMyYTcyYTAzYTQ3NTNhNWQwNDY4YmE1MDUxMmFhYzUyIiwidGFnIjoiIn0="

NS

2 record(s)

ns4.level3.net.
ns3.level3.net.

SOA

1 record(s)

bulldog.cambridgema.gov. hostmaster.cambridgema.gov. 2023030407 900 600 2419200 3600

CAA

0 record(s)

—

Not configured

DS

0 record(s)

—

Not configured

DNSKEY

0 record(s)

—

Not configured

RRSIG

1 record(s)

NSEC 13 2 1800 20260813213147 20260811193147 35496 gov. qMiyLNCCOr+bJUtMmKt3msUKRlHJJkuag9lkzcqnl8T0c0Xvmjk100aK OfG60YD7Uc/Pz+WbQPxKT1NyLS0nQQ==

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 ip4:204.167.92.25 ip4:204.167.92.26 include:spf.protection.outlook.com include:spf-00433301.pphosted.com include:spf-009c9501.pphosted.com include:aws.us1.spf.staffbase.com  ip4:209.61.151.0/24 ip4:166.78.68.0/22 ip4:198.61.254.0/23 ip4:192.237.158.0/23  ip4:23.253.182.0/23 ip4:104.130.96.0/28 ip4:146.20.113.0/24 ip4:146.20.191.0/24 ip4:159.135.224.0/20 ip4:69.72.32.0/20 ip4:104.130.122.0/23  ip4:146.20.112.0/26 ip4:161.38.192.0/20 ip4:143.55.224.0/21 ip4:143.55.232.0/22 ip4:159.112.240.0/20 ip4:198.244.48.0/20 ip4:204.220.168.0/21  ip4:204.220.176.0/20 ip4:141.193.32.0/23 ip4:159.135.140.80/29 ip4:159.135.132.128/25 ip4:161.38.204.0/22 ip4:87.253.232.0/21  ip4:185.189.236.0/22 ip4:185.211.120.0/22 ip4:185.250.236.0/22 ip4:143.55.236.0/22 ip4:198.244.60.0/22 ip4:204.220.160.0/21 -all

DMARC

Configured

v=DMARC1; p=quarantine; rua=mailto:ivrhmxnn@ag.dmarcian.com; ruf=mailto:ivrhmxnn@fr.dmarcian.com; fo=1; pct=100

DKIM

Selector selector2

v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCaMNe4YvIH+hXxuUP6ikrjpU0fs3pmNysMkNDqW1cUGN/lvtvEvDUg33Ix0DHVWCadh3C7ZO/1WE8RbWW/13luuNxeHUZ7FoS7Ek+4Iq8gDLbfLqDSdEx7e3SWaFs2ZOjc7OG0c9Cav++4GXr76RFP+dLu17/hFq0qqc0nc94PQQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Welcome to the City of Cambridge

Description

Find all you need to know about living in, working in, and visiting the city of Cambridge.

Final URL

https://www.cambridgema.gov/

HTTP status

200

HTTP

Status

HTTP/2 200

Final URL

https://www.cambridgema.gov/

Version

Server

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

DigiCert Inc

cambridgema.gov

Valid from

2026-03-26T19:00:00-05:00

Valid until

2026-10-11T18:59:59-05:00

Days remaining

Protocol

TLSv1.3

Cipher

TLS_CHACHA20_POLY1305_SHA256

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

Consistent

✓

Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

204.167.92.20

52,11 ms

Cloudflare

1.1.1.1

204.167.92.20

52,80 ms

Quad9

9.9.9.9

204.167.92.20

33,56 ms

OpenDNS

208.67.222.222

204.167.92.20

42,98 ms

AdGuard

94.140.14.14

204.167.92.20

93,86 ms

IP, geolocation and ASNAssociated network information

204.167.92.20

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.216.220

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

mxa-00433301.gslb.pphosted.com

Port 25: Closed/unreachable - 28.7 ms - 
Port 465: Closed/unreachable - 48.2 ms - 
Port 587: Closed/unreachable - 76.4 ms -

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