Infrastructure - https://arm.com BeaverCheck Audit

D

CDN & Delivery

Action

No CDN detected

FIX

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.

C

IPv6 Readiness

Action

No IPv6 support

REVIEW

No IPv6 support

No IPv6 (AAAA) records found

IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

No IPv6 Support

About 40% of internet users have IPv6. Consider adding AAAA records.

IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

Why this matters

No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.

Source: Google IPv6 stats

C

URL Variants

Action

www/non-www, trailing slash, HTTP→HTTPS

REVIEW

www/non-www, trailing slash, HTTP→HTTPS

Both www and non-www versions serve content

Got: Both variants return 200 Expected: One variant 301-redirects to the other

HTTP→HTTPS redirect uses 302 instead of 301

Got: 302 temporary redirect Expected: 301 permanent redirect

www / non-www

200https://www.arm.com/

200https://arm.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

302http://arm.com/ → https://arm.com/

Use 301 (permanent) instead of 302 (temporary)

B

TLS Certificate Expiry & Recommendations

83 days until leaf cert expires — 3 issues to address

REVIEW

Certificate validity

83

days left

0d 30d 60d 90d+

Recommended actions

Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
Enable DNSSEC on your domain for DNS spoofing protection
Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy

A+

DNS Records

1 A records, 112 ms lookup

PASS

1 A records, 112 ms lookup

Resolves to 1 IPv4 address(es)

Got: 217.140.110.36

Single A record — no DNS redundancy

Multiple A records provide failover if one server goes down.

No IPv6 (AAAA) records

2 nameserver(s) configured

Got: ns9.arm.com, ns10.arm.com

1 mail exchanger(s) configured

CAA records not checked

CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.

SPF record present in TXT

DNS resolution time: 112 ms

Got: 112 ms

A	217.140.110.36
AAAA	—
CNAME	—
NS	ns9.arm.com, ns10.arm.com
MX	10 arm-com.mail.protection.outlook.com
TXT	miro-verification=519a170e96753c702023321610d10cf2564c2fb6 scnv-verification=2dc0c3db9aeb6cc6cbc4d01b352a776a:304298b8f07d069b4fe822ae05fa4... docusign=4354edae-504a-4b6b-87e6-1e4ff8faa4b4 facebook-domain-verification=p9lo864qhly23ne718q7xpx8ou5en5 google-site-verification=wAP0CMj1e4ykhDl5tvr_TRJDLTQCRu2Ssi_lN5XBdns _globalsign-domain-verification=RW5XFgbr6HEWfe8ifSSAodFQYdy3tAqZ-Pza5nYpFu atlassian-domain-verification=Kab7/mjw4dDUOKLoQrDFRANUr861TeImKTyMXKzs4qtnFUEpg+... pTXUqVOFDgvKujvb2YneVrgSMs4HO2L3QY/DBptqMX0= parallels-domain-verification=63113f27e7e54ff1b08f85e406ae405970a0957b720046d4b2... asv=73e72696310a7c875d617954c2c2380b google-site-verification=sFxb2VJWasr0bcA0AfiCwrxNInZ_BwXA0kQf1w9WmSI _globalsign-domain-verification=xl_zUjAb5e-087Hw3oq00POA4DNbyJcyjKUUQtmymv 7Ms7HXWIVBFZt8rbhyvRZj1SjMLKHUGxpBcwH2lfQV8= loom-site-verification=0c5ca6a1e0644cad80e3dabbae38bce3 remarkable-domain-verification=0e104644-0823-47c1-8207-e6f8cfc4b56d MS=ms75314990 e880bd87-df0f-4092-a5ec-5d2355aadfbb t6keBVEiT94PQwcYb3UwyLUpkWVpEfUR+GHpHBd6L24= docusign=3378549e-e22d-4ebb-a1fc-13cd3e7657cd 6lGRnuRk8kC0MPI/1xxIjEKbcbRHL5yBXKoXofWbiXQ= SPF v=spf1 include:_spf-a.arm.com include:_spf-b.arm.com include:_spf-c.arm.com -all jamf-site-verification=N8SpeAd-0sZd-eq7yo86tw Validity-Domain-Verification=+fvuyK4xGf8IYtdYiPEHhu+B90A= 7hH07yiIUzNg+lhbIbS2I+qoyXam+XYjZQphd30oy2s= 00de0000000l5gtmak mongodb-site-verification=xXRygrrDunBRlVKK2gclJFnFrCmNa7vJ arm.com Globalsign validation wZESOmeviH35RYkJm+jmvdFq3S4s8LaNfUvlocmmFcg= 75mg2wb15tKXyadX7ubMPLg5fJz9kISG9XOX1+1aTMA= Dynatrace-site-verification=83ffa8fa-73e2-4d46-878a-734e3bbfbc8c__tuevt2jng9172h... docker-verification=44a6692b-6e77-44fd-8701-071d06f9f319 google-site-verification=tHuC5YTqt9gYnORmLQokkO-KBiiM86U1qvCrTb2Zh_w docusign=1b941d60-18db-4bc0-893a-9f050c6ff220 arm.com.00DE0000000L5GtMAK.live.siteforce.com apple-domain-verification=BSBEa0gMuEQAMKLR atlassian-sending-domain-verification=dbd0283e-6213-4e44-a9e0-d105d0798424 MS=ms99651240
CAA	Lookup not available with standard resolver

Resolved in 112 ms

Multiple A records provide failover if one server goes down.

Why this matters

Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.

Learn more ▾

Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.

Source: SRE practice / DNS architecture

CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.

Why this matters

Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.

A

Redirect Chain

1 redirect(s), 803 ms total

PASS

1 redirect(s), 803 ms total

Single redirect

Got: https://arm.com → https://www.arm.com/ (302)

WWW normalization redirect

Uses 302 (temporary) redirect

If permanent, use 301 instead.

Got: https://arm.com

Redirect overhead: 803 ms total

Got: 803 ms

https://arm.com

695 ms · HTTP/1.1

302

https://www.arm.com/

108 ms · HTTP/1.1 FINAL

#	URL	Status	Time	Protocol	Server
1	https://arm.com	302	695 ms	HTTP/1.1
2	https://www.arm.com/	200	108 ms	HTTP/1.1

See the visual redirect chain in the HTTP Probe tab →

If permanent, use 301 instead.

Why this matters

302 (Found) is for genuinely temporary redirects — if this redirect is permanent, switch to 301 to preserve SEO equity.

Learn more ▾

Search engines treat 302 as temporary, keeping the original URL indexed and not transferring full link equity to the destination. Use 301 (Moved Permanently) for permanent redirects (HTTP→HTTPS, www-vs-non-www, URL restructures).

Source: Google Search Central

A+

Crawlability

robots.txt present, sitemap with 9 URLs

PASS

robots.txt present, sitemap with 9 URLs

robots.txt is present

Got: 2109 bytes

sitemap.xml is present

sitemap.xml is valid XML

sitemap.xml contains 9 entries

Sitemap index with 9 child sitemaps

robots.txt references sitemap

robots.txt 200 OK

Size 2109 B Sitemaps referenced 1 User-agents ChatGPT-User, Sogou, Amazonbot, Applebot, PerplexityBot, AhrefsBot, YandexBot, SemrushBot, SEOkicks, CoveoEnterpriseSearch, CCBot, Google-Extended, Bytespider, Qwantify/Bleriot, Claude-web, Bingbot, *, MegaIndex.ru, DotBot, MJ12bot, anthropic-ai, GPTBot, ClaudeBot Blocking No — crawling allowed

# ============================

# robots.txt for www.arm.com

# ============================


# ----------------------------

# ALLOW: Trusted AI/LLM Crawlers for Training & Indexing

# ----------------------------


User-agent: anthropic-ai

Allow: /llms.txt


User-agent: GPTBot

Allow: /llms.txt


User-agent: ClaudeBot

Allow: /llms.txt


User-agent: Claude-web

Allow: /llms.txt


User-agent: CCBot

Allow: /llms.txt


User-agent: Google-Extended

Allow: /llms.txt


User-agent: Amazonbot

Allow: /llms.txt


User-agent: Applebot

Allow: /llms.txt


User-agent: Bingbot

Allow: /llms.txt


User-agent: ChatGPT-User

Allow: /llms.txt


User-agent: Bytespider

Allow: /llms.txt


User-agent: PerplexityBot

Allow: /llms.txt


User-agent: Sogou

Allow: /llms.txt


Sitemap: https://www.arm.com/sitemap_index.xml


# ----------------------------

# Internal Search Bot - Limited Access

# ----------------------------

User-agent: CoveoEnterpriseSearch

Allow: /news/20*


User-agent: *

Disallow: /coveo/


# ----------------------------

# BLOCK: Crawlers with Low Value or High Server Load

# ----------------------------

User-agent: AhrefsBot

Disallow: /


User-agent: YandexBot

Disallow: /


User-agent: MegaIndex.ru

Disallow: /


User-agent: SemrushBot

Disallow: /


User-agent: Qwantify/Bleriot

Disallow: /


User-agent: DotBot

Disallow: /


User-agent: MJ12bot

Disallow: /


User-agent: SEOkicks

Disallow: /


# ----------------------------

# GENERAL RULES - Internal/Private Paths

# ----------------------------

User-agent: *


# Backend or dev/testing paths

Disallow: /assets/fonts/

Disallow: /assets/Fonts/

Disallow: /includes/

Disallow: /phpscripts/

Disallow: /shouldremainempty/

Disallow: /xml/

Disallow: /zh/includes/

Disallow: /zh/shouldremainempty/

Disallow: /zh/xml/

Disallow: /about/newsroom


# Block legacy trademark-related assets

Disallow: /-/media/global/company/policies/trademarks/incorrect-logo/


# Block thank-you pages or soft redirects

Disallow: /*-ty$


# Block internal site search

Disallow: /search*

Disallow: /Search*

sitemap.xml 200 OK

Type Sitemap Index URLs 9 entries Valid XML Yes

Child Sitemaps:

A+

Domain Intelligence

arm.com — via Nom-iq Ltd. dba COM LAUDE, 31 years, 7 months old, hosted on ARM-AS, GB

PASS

arm.com — via Nom-iq Ltd. dba COM LAUDE, 31 years, 7 months old, hosted on ARM-AS, GB

Domain registered until Feb 8, 2027 (9 months remaining)

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.

Registrar: Nom-iq Ltd. dba COM LAUDE

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.

Hosting: ARM-AS, GB

Got: AS28939

Domain expiry

237 days

February 8, 2027

SSL certificate

83 days

Issued by GlobalSign nv-sa

Domain age

31 years, 7 months

Registered February 7, 1995

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

ARM-AS, GB

ASN AS28939

217.140.110.36

Registrar

Nom-iq Ltd. dba COM LAUDE

Unlocked 2 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 Nom-iq Ltd. dba COM LAUDE

Created February 7, 1995 (31 years, 7 months ago)

Expires February 8, 2027 (9 months)

Last Updated February 3, 2026

Name Servers ns10.arm.com, ns9.arm.com

DNSSEC Not enabled

Hosting

IP Address 217.140.110.36

ASN AS28939 (ARM-AS, GB)

Provider ARM-AS, GB

Data source: rdap (0.4s)

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 654 ms — DNS, TCP, TLS, TTFB, content transfer breakdown

PASS

DNS Lookup

40 ms

TCP Connect

153 ms

TLS Handshake

309 ms

Time to First Byte

654 ms

Total Time

655 ms

Connection waterfall

DNS Lookup 40 ms TCP Connect 153 ms TLS Handshake 309 ms Server Processing 152 ms Content Transfer 0 ms