Marsh & McLennan marsh.com Partial data, full scan by Oct 29
Fortune 500 rank #168 · Financials · Diversified Financials · MMC
Last scanned 2026-10-19 · next scan Thu, Oct 29
Full DNS records & evidence → NS, MX, mail and SPF senders, verification vendors, certificate authorities, CNAME chains, ASNs and history per hostname
AI vendors verified: Anthropic
DNS
DNS, traffic-weighted: Marsh & McLennan
DNS by hostname count: Marsh & McLennan
Zones (2)
Each DNS zone that holds a scanned hostname: the domain apex, brand domains and any delegated subdomain. Two vendors on one zone = secondary DNS.
| Zone | DNS provider | Nameservers | Hostnames | Key |
|---|---|---|---|---|
| marsh.com primary | Self-hosted | ns01.mmc.com US ns03.mmc.com US ns04.mmc.com ns05.mmc.com +1 | 1 | 0 |
| www.marsh.com | AWS Route 53 | ns-1249.awsdns-28.org ns-1868.awsdns-41.co.uk ns-37.awsdns-04.com ns-933.awsdns-52.net | 1 | 0 |
CDN & Security
CDN & Security, traffic-weighted: Marsh & McLennan
CDN & security by hostname count: Marsh & McLennan
Hostname map
The live hostnames from the table below, grouped by the provider in front of it and the network (ASN and BGP prefix) its address belongs to. Colored borders mark roles: primary site login / account store developer / API marketing / support / downloads.
Key hostnames by role (CDN & security)
- primary site: AWS
- login / SSO: none found
- account: none found
- store / checkout: none found
- marketing / brand: none found
- support / help: none found
- developer / API: none found
- downloads / static: none found
Hostnames (2)
Found through brand research, browser traffic data (Chrome UX Report) and certificate logs. Tiers: primary = marsh.com and www; key = customer-facing or revenue names (login, account, store, marketing/brand, support, developer, downloads) on any owned domain; other = remaining public names (low weight); internal = staff-only names, not listed here and not counted in share. "CDN & Security" is the front door a visitor connects to (CDN/WAF or the cloud load balancer). Grey rows did not resolve. Weight = share of the company's traffic-weighted total.
| Hostname | Tier / role | DNS | CDN & security | CDN & security evidence | CNAME / IP · ASN | Weight |
|---|---|---|---|---|---|---|
| www.marsh.com CrUX top 500,000 | primary primary site primary site · CDN & security AWS · DNS AWS Route 53 · 66.7% |
AWS Route 53 zone www.marsh.com | AWS | AWS CloudFront (IP range) (A 18.238.136.98 in published aws_cloudfront ranges; seen in the HTTP response) | 18.238.136.98 18.238.136.39 18.238.136.112 18.238.136.59 AS16509 · 18.238.136.0/22 | 66.7% |
| marsh.com | primary primary site primary site · CDN & security AWS · DNS Self-hosted · 33.3% |
Self-hosted | AWS | Direct (AWS) (A 75.2.75.65 in published aws ranges) | 75.2.75.65 99.83.175.37 AS16509 · 75.2.64.0/20 | 33.3% |
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History
Trend charts start once two weeks of history build up.
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