When submarine cables fail, will pubmatic.com still work?

Will not work

Domestic direct connections (O)
1

Domestic cloud services (?)
11

Foreign connections (X)
6

When submarine cables fail, can pubmatic.com still load normally?

Based on the latest test, under a submarine-cable outage scenario pubmatic.com may “not work.” If international connectivity is cut or blocked, the site may fail to load.

Why might pubmatic.com “not work” when submarine cables fail?

During testing, when the homepage loaded we found that some content or resources had to be fetched from outside the country. Those resources usually load fine, but when cables are cut or traffic is severely congested those connections can fail—and the site may break along with them.

Does this mean pubmatic.com will definitely be unavailable during severe cable congestion?

Not necessarily. This result is inferred from resource dependencies observed while loading the homepage. It reflects higher risk—not a guarantee that every page or every feature would fail completely.

How is resilience for pubmatic.com under cable outages assessed?

When opening the homepage of pubmatic.com, we observed 114 requests across 18 domains.
If any involve connections abroad, the outcome is classified as “Will not work.” If there are no foreign connections but there is reliance on in-country nodes of multinational cloud services, the outcome is “Uncertain.” If connections are only domestic aside from that international-cloud pattern, the outcome is “May work.”
For detailed rules and the full workflow, see the research methodology and overall report.

Site location

  • Foreign / CloudAS16509 Amazon.com, Inc.54.230.70.115

Connection information

  • Foreign / CloudAS14618 Amazon.com, Inc.pi.pardot.com
  • Domestic / CloudAS209242 Cloudflare London, LLCthenai.org
  • Domestic / CloudAS13335 Cloudflare, Inc.cdnjs.cloudflare.com
  • Domestic / CloudAS13335 Cloudflare, Inc.player.vimeo.com
  • Domestic / CloudAS13335 Cloudflare, Inc.t.co
  • Domestic / CloudAS13335 Cloudflare, Inc.analytics.twitter.com
  • Domestic / CloudAS13335 Cloudflare, Inc.vimeo.com
  • Domestic / CloudAS13335 Cloudflare, Inc.www.linkedin.com
  • Domestic / OtherAS3462 Data Communication Business Groupsnap.licdn.com
  • Foreign / CloudAS54113 Fastly, Inc.global.ketchcdn.com
  • Foreign / CloudAS54113 Fastly, Inc.f.vimeocdn.com
  • Foreign / CloudAS54113 Fastly, Inc.i.vimeocdn.com
  • Foreign / CloudAS54113 Fastly, Inc.cdn.ketchjs.com
  • Domestic / CloudAS15169 Google LLCwww.googletagmanager.com
  • Domestic / CloudAS15169 Google LLCwww.google.com
  • Domestic / CloudAS15169 Google LLCwww.google.com.tw
  • Domestic / CloudAS396982 Google LLCarclight.vimeo.com

Test environment

  • IP: 220.132.212.194
  • City: Banqiao
  • Region: Taipei
  • Country: TW
  • Organization: AS3462 Data Communication Business Group
  • DNS server: 168.95.1.1

View on GitHub

{
  "url": "https://pubmatic.com",
  "canonicalURL": "https://pubmatic.com/",
  "httpStatus": 200,
  "timestamp": "2026-07-20T19:29:19.676Z",
  "testParameters": {
    "customDNS": "168.95.1.1",
    "useAdblock": true,
    "adblockUrls": [
      "https://filter.futa.gg/hosts_abp.txt",
      "https://raw.githubusercontent.com/AdguardTeam/FiltersRegistry/master/filters/filter_15_DnsFilter/filter.txt"
    ],
    "useCache": true,
    "hasIPinfoToken": true
  },
  "testingEnvironment": {
    "ip": "220.132.212.194",
    "hostname": "220-132-212-194.hinet-ip.hinet.net",
    "city": "Banqiao",
    "region": "Taipei",
    "country": "TW",
    "loc": "25.0143,121.4672",
    "org": "AS3462 Data Communication Business Group",
    "timezone": "Asia/Taipei",
    "source": "ipinfo json api (direct)",
    "dnsServer": "168.95.1.1"
  },
  "requestCount": 114,
  "uniqueDomains": 18,
  "test_results": {
    "domestic": {
      "cloud": 11,
      "direct": 1
    },
    "foreign": {
      "cloud": 6,
      "direct": 0
    }
  },
  "domainDetails": [
    {
      "originalUrl": "https://pubmatic.com/",
      "type": "document",
      "ipinfo": {
        "domain": "pubmatic.com",
        "ip": "54.230.70.115",
        "hostname": "server-54-230-70-115.hkg1.r.cloudfront.net",
        "city": "Hong Kong",
        "region": "Hong Kong",
        "country": "HK",
        "loc": "22.2783,114.1747",
        "org": "AS16509 Amazon.com, Inc.",
        "timezone": "Asia/Hong_Kong"
      },
      "category": "foreign/cloud",
      "cloud_provider": {
        "x-amz-cf-pop": "HKG1-P1",
        "rtt": 180.335,
        "detection_method": "rtt",
        "laces": {
          "source": "laces api (direct)",
          "queried_ip": "54.230.70.115",
          "prefix": "54.230.70.0/24",
          "anycast": true,
          "confidence": "low_confidence",
          "partial": false,
          "asns": [
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          "date": "2026-07-17",
          "has_tw": false,
          "has_taipei": false,
          "site_count": 2,
          "location_count": 0
        }
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    },
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      "type": "script",
      "ipinfo": {
        "domain": "cdnjs.cloudflare.com",
        "ip": "104.17.25.14",
        "city": "San Francisco",
        "region": "California",
        "country": "US",
        "loc": "37.7621,-122.3971",
        "org": "AS13335 Cloudflare, Inc.",
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      },
      "category": "domestic/cloud",
      "cloud_provider": {
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        "detection_method": "header"
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    },
    {
      "originalUrl": "https://thenai.org/wp-json/nai-badge/v1/badge/nai_nrd78dbaqmij/png",
      "type": "image",
      "ipinfo": {
        "domain": "thenai.org",
        "ip": "141.193.213.10",
        "city": "Austin",
        "region": "Texas",
        "country": "US",
        "loc": "30.2672,-97.7431",
        "org": "AS209242 Cloudflare London, LLC",
        "timezone": "America/Chicago"
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      "category": "domestic/cloud",
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  ]
}

Last tested: 7/21/2026, 3:29:19 AM (HTTP 200)