Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Probed from Singapore, Singapore

301 Moved Permanently

Checks

2 PASS 6 REVIEW 1 FIX

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.

Redirect Chain

1 redirect(s), 1541 ms total

REVIEW

1 redirect(s), 1541 ms total

Single redirect

Got: https://xing.com → https://www.xing.com/ (301)

WWW normalization redirect

Redirect overhead: 1541 ms total

Got: 1541 ms

https://xing.com

810 ms · HTTP/1.0

301

https://www.xing.com/

731 ms · HTTP/1.1 FINAL

#	URL	Status	Time	Protocol	Server
1	https://xing.com	301	810 ms	HTTP/1.0	LBe
2	https://www.xing.com/	200	731 ms	HTTP/1.1	CloudFront

See the visual redirect chain in the HTTP Probe tab →

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

Crawlability

robots.txt present, sitemap with 0 URLs

REVIEW

robots.txt present, sitemap with 0 URLs

robots.txt is present

Got: 5152 bytes

sitemap.xml is present

sitemap.xml contains invalid XML

Search engines may not be able to parse the sitemap. Fix XML validation errors.

sitemap.xml is empty — no URLs found

An empty sitemap provides no value. Add <url> entries for your pages.

robots.txt references sitemap

Search engines may not be able to parse the sitemap. Fix XML validation errors.

Why this matters

An unparseable sitemap is silently ignored by Google — the URLs it advertises are never queued for crawl.

Learn more ▾

Google's sitemap parser is strict about XML validity. A single unescaped `&` or unclosed tag invalidates the whole file. Run your sitemap through a validator (Search Console's Sitemaps report flags it) and fix the offending entry. Most generators escape correctly; mistakes usually come from manually-written entries.

Source: sitemaps.org / Google Search Central

An empty sitemap provides no value. Add <url> entries for your pages.

Why this matters

An empty sitemap signals 'no content to index' to Google — actively harmful versus having no sitemap at all.

Learn more ▾

Google compares URLs in the sitemap against URLs it has crawled. An empty sitemap on a site with thousands of pages signals abandonment. Either populate it correctly (most CMSes auto-generate) or delete the file and let Google crawl normally.

Source: Google Search Central / sitemaps.org

robots.txt 200 OK

Size 5152 B Sitemaps referenced 1 User-agents *, pimeyes.com crawler, GPTBot, CrazyWebCrawler-Spider Blocking No — crawling allowed

User-agent: CrazyWebCrawler-Spider
Disallow: /

User-agent: *
Disallow: /img/users
Disallow: /app/search
Disallow: /cgi-bin/search.fpl
Disallow: /patterns
Disallow: /jobs/posting_clicks
Disallow: /user-ass/jobs/posting_pdf
Disallow: /publicsearch/
Disallow: /search/
Disallow: /people/search/
Disallow: /r/
Disallow: /xbp/search
Disallow: /go/login
Disallow: /ads/
Disallow: /jobs/search/
Disallow: /jobs/search?*
Disallow: /start/
Allow: /start/signup
Disallow: /start/signup?*
Disallow: /signup?*
Disallow: /xing-one/api
Disallow: /graphql/api
Disallow: /social/share/
Disallow: /analytics/
Disallow: /spi/
Disallow: /social_plugins/
Disallow: /xas/api/
Disallow: /graphql/
Disallow: /cross-domain-bridge.html
Disallow: */external-application
Disallow: /pages/*:CSV2024*
Disallow: /pages/买*
Disallow: /pages/购*
Disallow: /pages/加*
Disallow: /pages/葳*
Disallow: /pages/药*
Disallow: /pages/迷*
Disallow: /pages/哪*
Disallow: /pages/网*
Disallow: /pages/里*
Disallow: /pages/水*
Disallow: /pages/情*
Disallow: /pages/卖*
Disallow: /pages/有*
Disallow: /pages/的*
Disallow: /pages/么*
Disallow: /pages/催*
Disallow: /pages/售*
Disallow: /pages/到*
Disallow: /pages/出*
Disallow: /pages/春*
Disallow: /pages/强*
Disallow: /pages/乖*
Disallow: /pages/多*
Disallow: /pages/上*
Disallow: /pages/昏*
Disallow: /pages/用*
Disallow: /pages/在*
Disallow: /pages/怎*
Disallow: /pages/口*
Disallow: /pages/少*
Disallow: /pages/可*
Disallow: /pages/香*
Disallow: /pages/钱*
Disallow: /pages/店*
Disallow: /pages/幻*
Disallow: /pages/以*
Disallow: /pages/效*
Disallow: /pages/订*
Disallow: /pages/粉*
Disallow: /pages/作*
Disallow: /pages/听*
Disallow: /pages/剂*
Disallow: /pages/人*
Disallow: /pages/蝇*
Disallow: /pages/苍*
Disallow: /pages/眠*
Disallow: /pages/线*
Disallow: /pages/女*
Disallow: /pages/话*
Disallow: /pages/正*
Disallow: /pages/喷*
Disallow: /pages/什*
Disallow: /pages/烟*
Disallow: /pages/睡*
Disallow: /pages/服*
Disallow: /pages/奸*
Disallow: /pages/制*
Disallow: /pages/鱼*
Disallow: /pages/宝*
Disallow: /pages/失*
Disallow: /pages/魂*
Disallow: /pages/如*
Disallow: /pages/何*
Disallow: /pages/安*
Disallow: /pages/站*
Disallow: /pages/品*
Disallow: /pages/格*
Disallow: /pages/能*
Disallow: /pages/淘*
Disallow: /pages/液*
Disallow: /pages/媚*
Disallow: /pages/发*
Disallow: /pages/价*
Disallow: /pages/付*
Disallow: /pages/专*
Disallow: /pages/联*
Disallow: /pages/系*
Disallow: /pages/城*
Disallow: /pages/商*
Disallow: /pages/晕*
Disallow: /pages/三*
Disallow: /pages/滴*
Disallow: /pages/伟*
Disallow: /pages/让*
Disallow: /pages/方*
Disallow: /pages/性*
Disallow: /pages/力*
Disallow: /pages/仑*
Disallow: /pages/闲*
Disallow: /pages/忆*
Disallow: /pages/片*
Disallow: /pages/果*
Disallow: /pages/进*
Disallow: /pages/卡*
Disallow: /pages/金*
Disallow: /pages/肩*
Disallow: /pages/最*
Disallow: /pages/拍*
Disallow: /pages/吃*
Disallow: /pages/叫*
Disallow: /pages/倒*
Disallow: /pages/蓝*
Disallow: /pages/吗*
Disallow: /pages/去*
Disallow: /pages/货*
Disallow: /pages/款*
Disallow: /pages/唑*
Disallow: /pages/哥*
Disallow: /pages/致*
Disallow: /pages/暴*
Disallow: /pages/之*
Disallow: /pages/醒*
Disallow: /pages/邮*
Disallow: /pages/箱*
Disallow: /pages/岛*
Disallow: /pages/不*
Disallow: /pages/神*
Disallow: /pages/夜*
Disallow: /pages/千*
Disallow: /pages/会*
Disallow: /pages/魔*
Disallow: /pages/雾*
Disallow: /pages/物*
Disallow: /pages/外*
Disallow: /pages/咸*
Disallow: /pages/艳*
Disallow: /pages/美*
Disallow: /pages/糖*
Disallow: /pages/猎*
Disallow: /pages/式*
Disallow: /pages/姦*
Disallow: /pages/使*
Disallow: /pages/了*
Disallow: /pages/东*
Disallow: /pages/销*
Disallow: /pages/道*
Disallow: /pages/身*
Disallow: /pages/蒙*
Disallow: /pages/精*
Disallow: /pages/灵*
Disallow: /pages/汗*
Disallow: /pages/微*
Disallow: /pages/宗*
Disallow: /pages/国*
Disallow: /pages/副*
Disallow: /pages/麻*
Disallow: /pages/静*
Disallow: /pages/镇*
Disallow: /pages/真*
Disallow: /pages/渠*
Disallow: /pages/本*
Disallow: /pages/日*
Disallow: /pages/平*
Disallow: /pages/因*
Disallow: /pages/台*
Disallow: /pages/信*
Disallow: /pages/麦*
Disallow: /pages/特*
Disallow: /pages/漫*
Disallow: /pages/比*
Disallow: /pages/时*
Disallow: /pages/拼*
Disallow: /pages/恶*
Disallow: /pages/恋*
Disallow: /pages/弥*
Disallow: /pages/延*
Disallow: /pages/宴*
Disallow: /pages/奈*
Disallow: /pages/天*
Disallow: /pages/丘*
Disallow: /pages/骚*
Disallow: /pages/觉*
Disallow: /pages/热*
Disallow: /pages/子*
Disallow: /pages/助*
Disallow: /pages/京*
Disallow: /pages/马*
Disallow: /pages/隐*
Disallow: /pages/请*
Disallow: /pages/红*
Disallow: /pages/玩*
Disallow: /pages/爽*
Disallow: /pages/活*
Disallow: /pages/是*
Disallow: /pages/快*
Disallow: /pages/型*
Disallow: /pages/西*
Disallow: /pages/蜘*
Disallow: /pages/蛛*
Disallow: /pages/生*
Disallow: /pages/想*
Disallow: /pages/做*
Disallow: /api/unified-underdog

User-agent: pimeyes.com crawler
Disallow: /

User-agent: GPTBot
Disallow: /

Sitemap: https://www.xing.com/sitemap.xml.gz

sitemap.xml 200 OK

Type URL Set URLs 0 entries Valid XML No

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.xing.com/

200https://xing.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

302http://xing.com/ → https://xing.com/

Use 301 (permanent) instead of 302 (temporary)

HTTP Probe Timing

Total 823 ms — DNS, TCP, TLS, TTFB, content transfer breakdown

REVIEW

DNS Lookup

100 ms

TCP Connect

240 ms

TLS Handshake

243 ms

Time to First Byte

823 ms

Total Time

824 ms

Connection waterfall

DNS Lookup 100 ms TCP Connect 240 ms TLS Handshake 243 ms Server Processing 241 ms Content Transfer 0 ms

TLS Certificate Expiry & Recommendations

137 days until leaf cert expires — 3 issues to address

REVIEW

Certificate validity

137

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

DNS Records

1 A records, 591 ms lookup

PASS

1 A records, 591 ms lookup

Resolves to 1 IPv4 address(es)

Got: 109.233.159.253

Single A record — no DNS redundancy

Multiple A records provide failover if one server goes down.

No IPv6 (AAAA) records

4 nameserver(s) configured

Got: ns-1321.awsdns-37.org, ns-1690.awsdns-19.co.uk, ns-291.awsdns-36.com, ns-633.awsdns-15.net

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 is slow (591 ms)

Slow DNS adds latency to every page load. Consider a faster DNS provider.

Got: 591 ms

A	109.233.159.253
AAAA	—
CNAME	—
NS	ns-1321.awsdns-37.org, ns-1690.awsdns-19.co.uk, ns-291.awsdns-36.com, ns-633.awsdns-15.net
MX	10 xing-com.mail.protection.outlook.com
TXT	MS=ms45637936 MS=ms63761438 Ml9vw8Cm/Ig/xpmhhDfS9TEjuzw= TTmNrvKCKyVmW6wxgBUHPZ3Tv4VvPaUslML0MaJAYdnySEHpD7OX4QTOPBLdgFlKfIL59yXY3x6lm8iI... ZOOM_verify_av-wjAz-T62Xdl1pMRBySA astro-domain-verification=clyhbm3ib0dq801kip93vxw0t atlassian-domain-verification=jQie6vPSfhfQ4wsCwYZtuCQTWC7PhDbv9HmrAzbRc6skBWWB/T... docker-verification=7d460483-f122-4277-b449-0a3a3fe26190 docusign=73ffe7e4-a802-458a-bad3-3afefc637792 facebook-domain-verification=xxd0q3s7lv62wywvvpver0e8j1j1vw google-site-verification=1CoJURTg2aHLa8bvDoNt_dDrLNmVPE93-cjaxYitSo8 google-site-verification=Flhe3fswMbbqS2VGEy2ODM-1P_PE_Z5l2u5zZZq5UR4 google-site-verification=Qb3_TK55U83JNTsumhQ_7culHoFKMU2dcpvVvfl5h-k google-site-verification=UORS-nc4KF2CsNXjoZmD3hLN9gvo3xdmmRXP2UE0N2Y google-site-verification=UqxFvQ_ikK9hga0Qm1unOA9HbMWTTlJ_TTVxRTu9z04 google-site-verification=jC5_MqgVlYS7He0-uldAaB4z1uYxuZUKL_bTHaIYn-0 google-site-verification=whYQbqxkVsb_xI5XKG3U8CQG2Vn75Nhx5HyTxo30gHA miro-verification=3969bd74d34f4d6e10fb42f5233014d2d3dd4f9c openai-domain-verification=dv-JfWX8IbG0n87GNHoDQvLlbeM paloaltonetworks-site-verification=93e36781f48dc570d80205f59263b53045f9a982b7fcc... segment-site-verification=3fA98vkzGDmgoJbj3AG2CJvr8Z9mSQpx teamviewer-sso-verification=54188f7fff354a9b92f7652fd3937fb0 SPF v=spf1 mx include:_netblocks.mail.xing.com include:_spf.zimpel.de include:_spf.s... zoom-domain-verification=5adddeb4-2a0b-4bf0-8eaf-82bc5e2c49d8
CAA	Lookup not available with standard resolver

Resolved in 591 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.

Slow DNS adds latency to every page load. Consider a faster DNS provider.

Why this matters

DNS resolution is slow — anycast DNS providers (Cloudflare, Route 53) typically resolve <50ms globally.

Source: DNS performance benchmarks

A+

Domain Intelligence

xing.com — via InterNetX GmbH, 34 years, 1 months old, hosted on NWRK-AS New Work SE, DE

PASS

xing.com — via InterNetX GmbH, 34 years, 1 months old, hosted on NWRK-AS New Work SE, DE

Domain registered until Aug 24, 2026 (4 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: InterNetX GmbH

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: NWRK-AS New Work SE, DE

Got: AS50343

Domain expiry

41 days

August 24, 2026

SSL certificate

137 days

Issued by GlobalSign nv-sa

Domain age

34 years, 1 months

Registered August 25, 1992

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

NWRK-AS New Work SE, DE

ASN AS50343

109.233.159.253

Registrar

InterNetX GmbH

Unlocked 4 NS records

Expiry timeline

Today

+1 year

Domain expiry SSL expiry Danger zone (≤30 days)

Recommended actions

Renew the domain or enable auto-renewal to prevent accidental expiry
Enable DNSSEC to protect visitors from DNS spoofing
Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers

Registrar InterNetX GmbH

Created August 25, 1992 (34 years, 1 months ago)

Expires August 24, 2026 (4 months)

Last Updated August 25, 2025

Name Servers ns-1321.awsdns-37.org, ns-1690.awsdns-19.co.uk, ns-291.awsdns-36.com, ns-633.awsdns-15.net

DNSSEC Not enabled

Hosting

IP Address 109.233.159.253

ASN AS50343 (NWRK-AS New Work SE, DE)

Provider NWRK-AS New Work SE, DE

Data source: rdap (1.2s)

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

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.