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developer.tenable.com
Tenable · tier critical (developer / API) · 3.0% of the company's traffic weight · scan of 2026-10-17
Self-hosted + AWS Route 53DNS (zone tenable.com)
CloudflareCDN & security
Cloudflare (AS13335)104.16.240.0/20
DNS records
| Status | live |
|---|---|
| CNAME chain | ssl.readmessl.com |
| A | 104.16.242.118 104.16.241.118 |
| AAAA | 2606:4700::6810:f276 2606:4700::6810:f176 |
| Zone | tenable.com |
| Zone NS | ns1.tenablesecurity.com ns2.tenablesecurity.com ns3.tenablesecurity.com |
| Origin ASN | AS13335 Cloudflare (AS13335) |
| BGP prefix | 104.16.240.0/20 |
HTTP
| GET / status | 200 |
|---|---|
| /cdn-cgi/trace | cloudflare (colo SEA) |
| cf-ray | a4c1a5665ecdfa59-SEA |
| server | cloudflare |
| set-cookie(names) | __cf_bm |
Why we classified it this way
DNS
- Self-hosted Self-hosted · NS ns1.tenablesecurity.com → 206.205.255.73 AS395671 TENABLE-NETWORK-SECURITY-INC - Tenable, (company network) (confidence 90%)
- AWS Route 53 AWS Route 53 · NS ns2.tenablesecurity.com → 3.212.162.242 AS14618 AMAZON-AES - Amazon.com, Inc., US, ns3.tenablesecurity.com → 52.38.181.124 AS16509 AMAZON-02 - Amazon.com, Inc., US (confidence 90%)
CDN & security
- Cloudflare Cloudflare (IP range) · A 104.16.242.118 in published cloudflare ranges; /cdn-cgi/trace valid (colo=SEA) (confidence 99%)
Behind the edge / sub-signals
- Cloudflare Cloudflare Bot Management · cookie __cf_bm (confidence 90%)
History
| Scan | Status | DNS | CDN & security | CNAME / A | ASN |
|---|---|---|---|---|---|
| 2026-10-17 | live | Self-hosted AWS Route 53 | Cloudflare | ssl.readmessl.com | AS13335 |