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https://bing.com

Infrastructure

· 17 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
81
GRADE
B
FIX
3
REVIEW
5
PASS
9
INFO
0
Probed from New York, United Stated
301 Moved Permanently
Checks
17
9 PASS 5 REVIEW 3 FIX
F
IPv6 Readiness
Action
IPv6 records exist but unreachable
FIX
IPv6 records exist but unreachable
Warning::
IPv6 DNS records exist but server is not reachable
Having AAAA records but an unreachable server is worse than no AAAA — clients may experience delays before falling back to IPv4.
Got: 2620:1ec:33::10, 2620:1ec:33:1::10
Info::
IPv6 connection error
Got: dial tcp6 [2620:1ec:33::10]:443: connect: no route to host
IPv6 Misconfigured
AAAA Records 2620:1ec:33::10, 2620:1ec:33:1::10 Connection UNREACHABLE

Having AAAA records but an unreachable server is worse than no AAAA — clients may experience delays before falling back to IPv4.

Why this matters

Advertising IPv6 (AAAA records) without a reachable server means IPv6-preferring clients silently fail every connection.

Learn more ▾

Modern browsers prefer IPv6 if AAAA exists (Happy Eyeballs algorithm). If the IPv6 server isn't reachable, browsers fall back to IPv4 — but with seconds of added latency per request. Either fix IPv6 reachability or remove the AAAA records.

Source: RFC 8305 (Happy Eyeballs)

D
URL Variants
Action
www/non-www, trailing slash, HTTP→HTTPS
FIX
www/non-www, trailing slash, HTTP→HTTPS
Critical::
Both www and non-www versions serve content
Got: Both variants return 200 Expected: One variant 301-redirects to the other
Critical::
HTTP version does not redirect to HTTPS
Got: HTTP 301 Expected: 301 redirect to HTTPS

www / non-www

200https://www.bing.com/
200https://bing.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://bing.com/ → http://www.bing.com/

HTTP version does not redirect to HTTPS

D
CDN & Delivery
Action
No CDN detected
FIX
No CDN detected
Warning::
No CDN detected
A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.
No CDN detected

Consider using a CDN to improve global delivery speed and reduce origin load.

B
DNSSEC
Unsigned (DNSSEC not deployed)
REVIEW
Unsigned (DNSSEC not deployed)
Info::
DNSSEC is not deployed
The zone is not DNSSEC-signed. Users on validating resolvers (Cloudflare 1.1.1.1, Quad9 9.9.9.9, growing default in mobile resolvers) get no protection against DNS spoofing for this domain. Most registrars now offer DNSSEC at a single click; consider enabling it for sites where authenticity matters (banking, healthcare, government).
C
Reverse DNS
Action
0/4 IPs match cert SAN
REVIEW
0/4 IPs match cert SAN
Info::
PTR lookup failed for 150.171.27.10: lookup 150.171.27.10: no such host
No reverse DNS record set for this IP. Common on bare cloud-VM IPs without provider-side PTR; not a security issue.
Info::
PTR lookup failed for 150.171.28.10: lookup 150.171.28.10: no such host
No reverse DNS record set for this IP. Common on bare cloud-VM IPs without provider-side PTR; not a security issue.
Info::
PTR lookup failed for 2620:1ec:33::10: lookup 2620:1ec:33::10: no such host
No reverse DNS record set for this IP. Common on bare cloud-VM IPs without provider-side PTR; not a security issue.
Info::
PTR lookup failed for 2620:1ec:33:1::10: lookup 2620:1ec:33:1::10: no such host
No reverse DNS record set for this IP. Common on bare cloud-VM IPs without provider-side PTR; not a security issue.
B
TLS Certificate Expiry & Recommendations
157 days until leaf cert expires — 1 issues to address
REVIEW

Certificate validity

157
days left
0d 30d 60d 90d+

Recommended actions

  • Enable DNSSEC on your domain for DNS spoofing protection
B
Operational Status Page
No status page link detected
REVIEW
No status page link detected
Info::
No operational status page link detected
Status pages communicate planned maintenance and incidents to users -- a hallmark of operationally-mature services. Most SaaS teams publish one via Atlassian Statuspage, Instatus, BetterUptime, or a self-hosted Cachet. Smaller sites legitimately don't need one; flagged as Info, not a failure.
B
Health Check Endpoint
No conventional health endpoint found
REVIEW
No conventional health endpoint found
Info::
No conventional health endpoint found
Health endpoints (/health, /healthz, /status, /ping, /api/health) let uptime monitors, load balancers, and orchestration systems (Kubernetes, ECS, Fly.io) verify the service is alive. Marketing sites and small services often skip them legitimately; flagged as Info, not a failure. Probe results: /api/health: 404, /health: 404, /healthz: 404, /ping: 410, /status: 404.
A+
DNS Records
2 A records, 126 ms lookup
PASS
2 A records, 126 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 150.171.27.10, 150.171.28.10
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2620:1ec:33::10, 2620:1ec:33:1::10
Info::
8 nameserver(s) configured
Got: ns1-204.azure-dns.com, ns2-204.azure-dns.net, ns3-204.azure-dns.org, ns4-204.azure-dns.info, dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, dns4.p09.nsone.net
Info::
1 mail exchanger(s) configured
Info::
SPF record present in TXT
Info::
DNS resolution time: 126 ms
Got: 126 ms
A150.171.27.10, 150.171.28.10
AAAA2620:1ec:33::10, 2620:1ec:33:1::10
CNAME—
NSns1-204.azure-dns.com, ns2-204.azure-dns.net, ns3-204.azure-dns.org, ns4-204.azure-dns.info, dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, dns4.p09.nsone.net
MX
10 bing-com.mail.protection.outlook.com
TXT
facebook-domain-verification=09yg8uzcfnqnlqekzsbwjxyy8rdck7
google-site-verification=OkRY8R261shK5B8uEwvsFZp9nQ2gRoHavGlruok1azc
google-site-verification=SHuSHN0Hv3nwBI9So329KwfbQ7xLif64SRwcGSdWNAU
v=msv1 t=6097A7EA-53F7-4028-BA76-6869CB284C54
SPF v=spf1 include:spf.protection.outlook.com -all
CAALookup not available with standard resolver
Resolved in 126 ms
A+
Subdomain Takeover
No subdomain takeover risk detected
PASS
No subdomain takeover risk detected
Info::
No CNAME record present
A
CAA Records
issue: digicert.com, globalsign.com, microsoft.com
PASS
issue: digicert.com, globalsign.com, microsoft.com
Info::
CAA issue tag present — authorized CA(s): digicert.com, globalsign.com, microsoft.com
Info::
No CAA iodef tag — won't be notified of failed issuance attempts
Add `0 iodef "mailto:security@example.com"` to receive notifications when a CA refuses issuance because it doesn't match your CAA policy. Useful signal for detecting issuance attempts by unauthorized CAs.
A+
Multi-Resolver DNS Speed
Mean 0ms across 3 resolvers (spread 1ms)
PASS
Mean 0ms across 3 resolvers (spread 1ms)
Info::
Quad9: 0ms
Got: 0ms via 9.9.9.9:53
Info::
Google: 1ms
Got: 1ms via 8.8.8.8:53
Info::
Cloudflare: 1ms
Got: 1ms via 1.1.1.1:53
A
Redirect Chain
1 redirect(s), 133 ms total
PASS
1 redirect(s), 133 ms total
Info::
Single redirect
Got: https://bing.com → https://www.bing.com:443/?toWww=1&redig=C8A10BAC8C4646A9BDBEC76194464B3A (301)
Info::
WWW normalization redirect

https://bing.com

44 ms · HTTP/1.1

301

https://www.bing.com:443/?toWww=1&redig=...

89 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://bing.com30144 msHTTP/1.1
2https://www.bing.com:443/?toWww=1&redig=...20089 msHTTP/1.1

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 12 URLs
PASS
robots.txt present, sitemap with 12 URLs
Info::
robots.txt is present
Got: 2676 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 12 entries
Info::
Sitemap index with 12 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 2676 B Sitemaps referenced 1 User-agents msnbot-media, Twitterbot, * Blocking No — crawling allowed
User-agent: msnbot-media

Disallow: /

Allow: /th?


User-agent: Twitterbot

Disallow:


User-agent: *

Disallow: /academic/profile

Disallow: /academic/search

Disallow: /account/

Disallow: /aclick

Disallow: /alink

Disallow: /amp/

Allow: /api/maps/

Disallow: /api/

Disallow: /bfp/search

Disallow: /bing-site-safety

Disallow: /blogs/search/

Disallow: /ck/

Disallow: /copilotsearch?q=

Disallow: /cr$

Disallow: /cr?

Disallow: /entities/search

Disallow: /entityexplore$

Disallow: /entityexplore?

Disallow: /fd/

Disallow: /fun/api/

Disallow: /fun/g/

Disallow: /history

Disallow: /hotel/reviews?

Disallow: /hotels/search

Disallow: /HpImageArchive.aspx

Disallow: /hpm

Disallow: /hpmob

Disallow: /images/async/?

Disallow: /images/async?

Disallow: /images/hosted/?

Disallow: /images/hosted/search?

Disallow: /images/hosted?

Disallow: /images/search%3F

Disallow: /images/search%5C

Disallow: /images/search/?

Disallow: /images/search?

Disallow: /images/searchbyimage

Disallow: /images?

Disallow: /inboxcommerce

Disallow: /local

Disallow: /maps/adsendpoint

Disallow: /merchant/reviews?

Disallow: /notifications/

Disallow: /offers/proxy/dealsserver/api/log

Disallow: /offers/proxy/dealsserver/buy

Disallow: /ping

Disallow: /product/reviews?

Disallow: /profile/history?

Disallow: /proFile/history?

Disallow: /Proxy.ashx

Disallow: /results

Disallow: /rewardsapp/

Disallow: /search

Disallow: /Search

Disallow: /settings

Disallow: /shenghuo

Allow: /shop$

Allow: /shop/

Disallow: /shop/collections

Disallow: /shop/productpage

Disallow: /shop/topics

Disallow: /shop?*

Disallow: /social/search?

Disallow: /spbasic

Disallow: /spresults

Disallow: /static/

Disallow: /th$

Disallow: /th?

Disallow: /translator/?ref=

Disallow: /travel/api

Disallow: /travel/css

Disallow: /travel/flight/flightSearch

Disallow: /travel/flight/flightSearchAction

Disallow: /travel/flight/search/?

Disallow: /travel/flight/search?

Disallow: /travel/flights

Disallow: /travel/flight-search

Disallow: /travel/hotel/hotelMiniSearchRequest

Disallow: /travel/hotel/hotelSearch

Disallow: /travel/hotels/checkout

Disallow: /travel/hotels/detail

Disallow: /travel/hotels/search/?

Disallow: /travel/hotels/search?

Disallow: /travel/hotel-search

Disallow: /travel/scripts

Disallow: /travel/secure

Disallow: /url

Disallow: /videos/browsing

Disallow: /videos/explore

Disallow: /videos/favorites

Disallow: /videos/feed

Disallow: /videos/music

Disallow: /videos/trending

Disallow: /widget/cr

Disallow: /widget/entity/search/?

Disallow: /widget/render

Disallow: /widget/snapshot

Disallow: /work


Sitemap: https://www.bing.com/sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 12 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
bing.com — via MarkMonitor Inc., 30 years, 9 months old
PASS
bing.com — via MarkMonitor Inc., 30 years, 9 months old
Info::
Domain registered until Jan 30, 2027 (8 months remaining)
Info::
DNSSEC is not enabled
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
Info::
Registrar: MarkMonitor Inc.
Warning::
Registrar lock is NOT enabled
The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.
Domain expiry

248 days

January 30, 2027

SSL certificate

157 days

Issued by Microsoft Corporation

Domain age

30 years, 9 months

Registered January 29, 1996

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Unknown

2620:1ec:33::10

Registrar

MarkMonitor Inc.

Unlocked 8 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable DNSSEC to protect visitors from DNS spoofing
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar MarkMonitor Inc.
Created January 29, 1996 (30 years, 9 months ago)
Expires January 30, 2027 (8 months)
Last Updated December 29, 2025
Name Servers dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, dns4.p09.nsone.net, ns1-204.azure-dns.com, ns2-204.azure-dns.net, ns3-204.azure-dns.org, ns4-204.azure-dns.info
DNSSEC Not enabled
Hosting
IP Address 2620:1ec:33::10
Data source: rdap (0.1s)

DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.

Why this matters

Without DNSSEC, an attacker who can poison your DNS can hijack your domain — and SSL certs alone don't stop them.

Learn more ▾

DNSSEC adds cryptographic signatures to DNS records, preventing forged responses from poisoning resolver caches. Without it, an attacker who controls the network path can redirect your domain to a malicious server before any HTTPS handshake happens. Most modern registrars (Cloudflare, Google Domains, Route 53) enable it with one toggle.

Source: ICANN / RFC 4033

The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.

Why this matters

Without registrar lock, an attacker who phishes your registrar credentials can transfer the domain in minutes — total brand hijack.

Learn more ▾

Registrar lock (clientTransferProhibited, clientUpdateProhibited, clientDeleteProhibited) requires extra verification before any transfer/update/delete. Every major registrar offers it free. Combined with 2FA on your registrar account, it's the strongest defense against domain hijacking.

Source: ICANN / domain-security best practice

A+
HTTP Probe Timing
Total 52 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
3 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
3 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
23 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
53 ms
Total Time Total request time from DNS lookup through full response.
53 ms

Connection waterfall

DNS Lookup 3 ms TCP Connect 3 ms TLS Handshake 23 ms Server Processing 23 ms Content Transfer 0 ms
A+
CDN Cache Observability
Cache state: CONFIG_NOCACHE
PASS
Cache state: CONFIG_NOCACHE
Info::
CDN cache state observable via 1 header(s)
Got: x-cache=CONFIG_NOCACHE
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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