Location
Lewisville, United States
Within about 500 km
Domain
southwest.com
Hosted by Southwest Airlines in Lewisville, United States.
Still looking this up. This tab fills in as the answers arrive.
Network Every network on the internet has an autonomous system number (ASN). This is the one that announces this address.
AS396173Southwest Airlines
Southwest Airlines Co.
BGP prefixPrefix The block of addresses this IP is announced in to the rest of the internet. RPKI valid means the block's owner signed off on the network announcing it.
No RPKI66.150.1.0/24
Seen by 2,926 peers
Latency Round trip for an HTTPS request from your browser to the site and back, including the server's reply time.
Live— ms
Measuring from your browser…
At a glance
Route
Finding a probe near you…
Networks crossed
Each network is an autonomous system (AS). Your traffic is handed from one to the next where they connect, following
the routes BGP advertises.
- AS16509Anthropic, PBC
- AS396173Southwest Airlines
Tracing from a probe near you with Globalping. Hop locations that its round-trip times rule out are left off the map.
Details
Network
- IPv4
- 66.150.1.229
- ASNThe autonomous system number of the network that announces this address.
- AS396173
- Operator
- Southwest Airlines Co.
- PrefixThe block of addresses announced over BGP that contains this address.
- 66.150.1.0/24
- RPKIWhether a signed record (ROA) authorizes this network to announce this prefix.
- No ROA
- VisibilityHow many bgp.tools peers carry this announcement.
- 2,926 peers
- Registry
- ARIN
Location
- Country
- United States
- Region
- Texas
- City
- Lewisville
- Coordinates
- 33.0780° N, 97.0673° W
- Accuracy
- Within about 500 km
- Time zone
- America/ChicagoUTC-5
- Local time
- 15:58
- Continent
- North America
Registration
RDAP- PopularityCloudflare Radar's ranking of domains by how often 1.1.1.1 users look them up.
- Top 20,000
- Registrar
- MarkMonitor Inc.
- Registered
- May 1, 199729 years ago
- Expires
- May 2, 2027in 6 months
- Updated
- Apr 10, 2026
- StatusRegistry flags on the domain, such as locks that stop unauthorized transfers or changes.
- Delete lockedTransfer lockedUpdate lockedDelete locked by registryTransfer locked by registryUpdate locked by registry
- DNSSECDNSSEC signs DNS answers so they can't be forged on the way to you.
- Unsigned
- Name servers
- ns-w11.southwest.comns-w21.southwest.com
- Registrant
- Redacted for privacy
May 1, 1997201 days leftMay 2, 2027
Partly protected
Needs 11 DNS lookups; receivers stop at 10 and treat it as invalid.
- Receives mail
- Its own servers
- Mail servers
- outgoing.wnco.commail02.wnco.com
- SPFLists the servers allowed to send mail for the domain. Receivers check it against the sending server.
- Invalid11 of 10 DNS lookups · includes luv.southwest.com, spf.messagelabs.com…
- DMARCTells receivers what to do with mail that fails SPF and DKIM: nothing (none), spam folder (quarantine) or reject.
- Rejectsends reports
- MTA-STSRequires other mail servers to use encrypted connections (TLS) when delivering to this domain.
- Not published
- TLS reportsAsks other mail servers to report failed encrypted deliveries (TLS-RPT).
- Not requested
- BIMIA brand logo that some mail apps show next to authenticated mail from the domain.
- Not published
Exposure
Open ports
2 open- 80HTTP
- 443HTTPS
- Software
- Big-Ip
- Seen asHostnames Shodan has seen pointing at, or presented by, this address.
- gallery.swamedia.comwww.swamedia.comswamedia.com
From Shodan InternetDB, updated weekly.
Website
Page
Southwest Airlines | Airline Tickets and Low Fares
Find low fares to top destinations and plan your travel today. Book Southwest flights, rental cars, and hotels on southwest.com.
- Language
- English
Built with
- CDN
- Akamaix-akamai-transformed header
Tech stack
Built with Each entry says what gave it away: a response header, a cookie's name, an asset's path or file name, or markup the tool leaves in the page. Versions are checked against endoflife.date's support schedules and, for JavaScript packages, OSV's vulnerability database, which carries GitHub's security advisories.
CDN & edge
- Akamai
x-akamai-transformed header
Fonts
- Southwest Sans
self-hosted font
Bot protection
- Akamai Bot Manager
ak_bmsc cookie
How it's made
- RenderingPrerendered pages are built ahead of time and served as files. Pages rendered on each request are built by server code for every visitor. Pages drawn in the browser arrive nearly empty and depend on JavaScript, which most AI crawlers don't run. Islands are interactive parts in otherwise static HTML.
- Drawn in the browseralmost no text (0 words) until scripts run
- Cache-Control
- max-age=0, no-cache, no-store
- HTML
- 7.5 KB · sent Brotli-compressed
- Scripts
- 23 files · 6 inlineall from this site
- Render-blockingPlain scripts in the page's head, without async, defer or type=module. The browser shows nothing until each one has downloaded and run.
- 4 scripts
Code from other sites Scripts a page loads from another domain run with the same power as its own code: they can read what visitors type and change the page. heade.rs checks what the HTML loads, not what tag managers add once they run.
The HTML loads no scripts from other sites.
DNS records
TypeNameValueTTL
Asouthwest.com66.150.1.2295 min
Asouthwest.com208.94.155.995 min
NSsouthwest.comns-w21.southwest.com5 min
NSsouthwest.comns-w11.southwest.com5 min
MXsouthwest.com10 outgoing.wnco.com5 min
MXsouthwest.com10 mail02.wnco.com5 min
TXTsouthwest.com"pardot886213=5f9176871506272b28c41f1ddffd6a99f50aae6f7c1540d03a7e4474746e820f"5 min
TXTsouthwest.com"facebook-domain-verification=5tg9b0fpw4l87zy4ga4hqxzrgjnbu7"5 min
TXTsouthwest.com"tsktdktn7wq710fh3lqrrx391kfjwv0y"5 min
TXTsouthwest.com"apple-domain-verification=AVqb7df_lh4ZY0IFN-xHTHCQfzRorhFBV0YJIEi3dMk"5 min
TXTsouthwest.com"klaviyo-site-verification=TvuiSP"5 min
TXTsouthwest.com"identrust_validate=BvULH7j+tFTCcJxzas5YCHn9MFM82G99zGdJ3Nx7OIJy"5 min
TXTsouthwest.com"_4euyjhh2akthszptxyklufk2g4nm1jj"5 min
TXTsouthwest.com"identrust_validate=fXNA1Qb3CuyBMtCOpRZyaKbIaisaX1CBZMlJX+K8Q2KE"5 min
TXTsouthwest.com"_xpn3qn98olo03xr8hj4zxmc12tab31i"5 min
TXTsouthwest.com"identrust_validate=HkfftkocT3gH5oXoFcreN5y4zrG7vLZeU9eV6GrZCrfu"5 min
TXTsouthwest.com"v=spf1 include:luv.southwest.com include:spf.messagelabs.com include:cmail1.com include:amadeus.com ~all"5 min
TXT_dmarc.southwest.com"v=DMARC1; p=reject; rua=mailto:dmarc_rua@emaildefense.proofpoint.com,mailto:dmarc_agg@dmarc.everest.email; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com,mailto:dmarc_fr@dmarc.everest.email;fo=1"5 min
HTTPS
Certificate
Valid- Issuer
- IdenTrust Services
- Issuing CA
- HydrantID Server CA O1
- Covers
- southwest.com
- Also validOther unexpired certificates for this name, found in Certificate Transparency logs.
- 6 more certificates
Sep 15, 2026171 days leftApr 2, 2027
From Certificate Transparency logs, via Cert Spotter.
Security
B- HSTSStrict-Transport-Security makes browsers refuse plain HTTP to this site. Preloaded sites are HTTPS-only even on a first visit.
- 1 year
- HTTP → HTTPSWhether the plain http:// address redirects visitors to the secure one.
- Redirects
- HTTP/3The newest HTTP, over QUIC. Announced in the alt-svc header or the domain's HTTPS DNS record.
- Not announced
- CAADNS records naming the only certificate authorities allowed to issue certificates for the domain.
- Any CA may issue
- security.txtA standard file (RFC 9116) telling security researchers how to report vulnerabilities.
- securityreport@wnco.com
Security headers 4 of 7
- HSTSpresent
- CSPpresent
- Framingpresent
- No sniffingpresent
- Referrermissing
- Permissionsmissing
- Isolationmissing
Response
200 OK541 ms from CMH · 1.9 KBDNS lookup49 ms
301 southwest.com227 ms
200 www.southwest.com541 ms
DNSConnect (TCP + TLS)Waiting for the replyFrom Cloudflare's CMH data center
Response headers
- accept-ranges
- bytes
- content-type
- text/html
- etag
- "bcc09e0a319b3ffe4a7ea424259795ad:1789649574.715139"
- last-modified
- Thu, 17 Sep 2026 12:52:54 GMT
- x-akamai-transformed
- hl - 0 pmb=mNONE,2
- vary
- Accept-Encoding
- content-encoding
- br
- expires
- Tue, 13 Oct 2026 20:58:45 GMT
- cache-control
- max-age=0, no-cache, no-store
- pragma
- no-cache
- date
- Tue, 13 Oct 2026 20:58:45 GMT
- content-length
- 1951
- connection
- close
- set-cookie
- swa_FPID=a6a1ab9a-a0ef-4f9b-b858-0bb769d9acbc; expires=Mon, 31-Dec-2038 23:59:59 GMT; path=/; secure
- akamai-request-bc
- [a=2.17.209.200,b=356441866,c=g,n=US_IL_MOUNTPROSPECT,o=20940]
- server-timing
- cdn-cache; desc=HIT, edge; dur=0, origin; dur=UNSET
- set-cookie
akaalb_alb_prd_southwest_spa=2147483647~op=PrdSouthwestSpaV2_lb:PrdSouthwestSpaV2|~rv=68~m=PrdSouthwestSpaV2:0|~os=6ebf11227eb877b88e3cfdc68a3ccb6c~id=e32f234e1344d0abe1413971b675498a; path=/; Expires=Tue, 19 Jan 2038 03:14:07 GMT; HttpOnly… Show all
akaalb_alb_prd_southwest_spa=2147483647~op=PrdSouthwestSpaV2_lb:PrdSouthwestSpaV2|~rv=68~m=PrdSouthwestSpaV2:0|~os=6ebf11227eb877b88e3cfdc68a3ccb6c~id=e32f234e1344d0abe1413971b675498a; path=/; Expires=Tue, 19 Jan 2038 03:14:07 GMT; HttpOnly; Secure; SameSite=None- x-content-type-options
- nosniff
- content-security-policy
- frame-ancestors 'self' https://mobile.southwest.com https://mobile-offline.southwest.com https://www.southwest.com https://www.swabiz.com;
- strict-transport-security
- max-age=31536000
- terms-of-service
- Unauthorized access, display, or use of Southwest's Company Information, including fare data, is prohibited by the Terms & Conditions on Southwest.com and Swabiz.com.
- set-cookie
ak_bmsc=7AC14D860DAFE815F4E351EBC2E486FF~000000000000000000000000000000~YAAQyNERAiDu0zKhAQAAz4IPNwEfuoQE4hsekXvuUYG4QGqibHrp43QA4t9EAUzRi9twP+yKS58JI54seob9ET8cQD9bH7zt+w1m4ttFtbwjr7OjxPIeFtx2qJSOEZoaIPoD6lkMllp0mzlLtwTLOTz5SsuQtR5sDFpCU9ot… Show all
ak_bmsc=7AC14D860DAFE815F4E351EBC2E486FF~000000000000000000000000000000~YAAQyNERAiDu0zKhAQAAz4IPNwEfuoQE4hsekXvuUYG4QGqibHrp43QA4t9EAUzRi9twP+yKS58JI54seob9ET8cQD9bH7zt+w1m4ttFtbwjr7OjxPIeFtx2qJSOEZoaIPoD6lkMllp0mzlLtwTLOTz5SsuQtR5sDFpCU9otOd3iAuUwzgQ1SZMey3EKzyeyR+KYljXHSMhQApaodDZIcQHRlMjIGfokxrP1GzhgWvlT442tO2mc/o9TyJx1MuOWSPWp9KnMHCBx2UYIIklWEF9gLroZ9myioOs6H2N7i0k1c+xPSdzOh4I1b/NYb6dCxerdPfKGfmskHGeIlh8nb8BIUKcegC5OmHimGK3ePw==; Domain=.southwest.com; Path=/; Expires=Tue, 13 Oct 2026 22:58:45 GMT; Max-Age=7200; HttpOnly- set-cookie
bm_mi=5BFDCE46A4BBCC88125DCEAB40D71D63~YAAQyNERAiHu0zKhAQAAz4IPNwHy4ivfX1vLGWT3lJBGwPTvFpAQ0PyjHEx+YMVGXrIwLaN8XQ3TqTuHHsxmfZHmmwpCQNevIFUO54pbT334RPXPueEe9nhR2qPhFFNaccYeBH3HLwWabFSfMai5lGgvpVspCGW93IY/+UdZddDiaepjsxLq1lyEdBwWfiWg1O5Z0iTgQ… Show all
bm_mi=5BFDCE46A4BBCC88125DCEAB40D71D63~YAAQyNERAiHu0zKhAQAAz4IPNwHy4ivfX1vLGWT3lJBGwPTvFpAQ0PyjHEx+YMVGXrIwLaN8XQ3TqTuHHsxmfZHmmwpCQNevIFUO54pbT334RPXPueEe9nhR2qPhFFNaccYeBH3HLwWabFSfMai5lGgvpVspCGW93IY/+UdZddDiaepjsxLq1lyEdBwWfiWg1O5Z0iTgQDcvsKnaNsea+M6uhVTSwvVSv/A8LiRrjk6NU5oCI/nQfQORwn/R55yh6j1VAcz6wsQ5u8s99JlcXP85HDtYynFiClmcUMe5gm4olJdrNisBPkUJple5UB05fQ==~1; Domain=.southwest.com; Path=/; Expires=Tue, 13 Oct 2026 20:58:45 GMT; Max-Age=0; Secure
AI & agents
Empty without JavaScript
The front page shows almost no text until scripts run (0 words), and GPTBot, ClaudeBot and PerplexityBot don't run them.
Crawlers
Allows allTrainingSearchOn request
They visit a page when someone asks an assistant about it. ChatGPT's, Perplexity's, Meta's and Amazon's treat robots.txt as advisory;
Anthropic's and Mistral's follow it.
OpenAIGPTBotallowedOAI-SearchBotallowedChatGPT-Userallowed
AnthropicClaudeBotallowedClaude-SearchBotallowedClaude-Userallowed
GoogleGoogle-ExtendedallowedGooglebotallowed—
Microsoft—bingbotallowed—
AppleApplebot-ExtendedallowedApplebotallowed—
Perplexity—PerplexityBotallowedPerplexity-Userallowed
MetaMeta-ExternalAgentallowedMeta-WebIndexerallowedMeta-ExternalFetcherallowed
AmazonAmazonbotallowedAmzn-SearchBotallowedAmzn-Userallowed
MistralMistralAI-TrainingallowedMistralAI-IndexallowedMistralAI-Userallowed
OthersCCBotallowedBytespiderallowedDuckAssistBotallowed
- Can cite itThe AI products that can use the site in their answers: each answers from one crawler (OAI-SearchBot for ChatGPT search, Googlebot for AI Overviews, bingbot for Copilot), and robots directives on the front page, like noindex, nosnippet and noarchive, keep some out.
- ChatGPT searchClaudePerplexityAI OverviewsGeminiCopilotMeta AISiri
Reading
- Without JavaScriptText on the front page before any scripts run: what GPTBot, ClaudeBot, PerplexityBot and most agents read. Google, Bing and Apple's crawlers run scripts.
- Almost no text0 words
- MarkdownAgents like Claude Code, Cursor and OpenCode ask for Markdown in their Accept header. It's the page without its markup, so it costs them far fewer tokens.
- Not offered
- llms.txtA Markdown file listing a site's key pages for AI tools. Coding agents read it; search crawlers mostly don't.
- Not published
- Structured dataschema.org JSON-LD in the page: facts about the site in a form machines read directly.
- None on the front page
Tools Ways an AI agent can do things on the site, not just read it: an MCP server that apps like Claude, ChatGPT and Cursor connect to, an API catalog, packaged agent skills, a shopping profile (UCP), or tools the page offers AI in the browser (WebMCP). heade.rs looks in the official MCP Registry and the files the site publishes under /.well-known/.
No MCP server, API catalog, agent skills, shopping profile or in-page tools found.