Free DNS Time-to-Live Diagnostic Tool

DNS TTL & Caching Health Checker

Analyze your domain's DNS TTL settings under two key lenses: Everyday Page Load Latency vs. Server Migration Readiness.

Caching Performance Score
30 / 100
Evaluates lookup speed vs cache efficiency
Shortest TTL
20 seconds
Fastest record expiration duration
Longest TTL
3 hours (10800s)
Maximum cached retention duration
Records Inspected
59
A, AAAA, CNAME, MX, TXT, NS, SOA
1. Everyday Load Performance
Sub-optimal Latency
Sub-optimal DNS Caching (High Lookup Latency)
Your DNS records have short TTL values. Browsers and ISPs are forced to re-query your DNS frequently, adding unneeded connection latency for visitors unless you are actively migrating servers.
2. Server Migration Agility
Migration Ready
Ready for Fast Server Migration
Your primary web resolution records (A/CNAME) have low TTLs. If you switch web hosts or server IPs today, DNS updates will propagate globally within minutes with minimal downtime.

DNS Record TTL Inventory (nike.com)

Host / Record Type Target / Value TTL (Duration) Everyday Performance Lens Migration Lens
nike.com A
54.192.100.3
49 seconds Lookup Overhead Instant Propagation
nike.com A
54.192.100.7
49 seconds Lookup Overhead Instant Propagation
nike.com A
54.192.100.58
49 seconds Lookup Overhead Instant Propagation
nike.com A
54.192.100.112
49 seconds Lookup Overhead Instant Propagation
nike.com NS
ns-n2.nike.com
1 hour (3600s) Optimal Speed 2h Prep Needed
nike.com NS
ns-n3.nike.com
1 hour (3600s) Optimal Speed 2h Prep Needed
nike.com NS
ns-n4.nike.com
1 hour (3600s) Optimal Speed 2h Prep Needed
nike.com NS
ns-n1.nike.com
1 hour (3600s) Optimal Speed 2h Prep Needed
nike.com SOA
Primary NS: ns-n1.nike.com (Admin: hostmaster.nike.com)
1 hour (3600s) Optimal Speed 2h Prep Needed
nike.com MX
[Priority 10] mxa-001b6002.gslb.pphosted.com
3 hours (10800s) Optimal Speed 24h Prep Needed
nike.com MX
[Priority 10] mxb-001b6002.gslb.pphosted.com
3 hours (10800s) Optimal Speed 24h Prep Needed
nike.com TXT
6IHSYqvkFCDiMubO/Czv+XdVcUWb8weKG9uyqn9Kh0u3RZwA+xx73W/f+iQrSciT+peqOK3yNcx1jsIqsHgY+g==
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
wiz-domain-verification=3cb6d690698de9ba2001d69ed35811baa3f917302293875949b7d863d1bf8b27
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
Dynatrace-site-verification=3767faff-af76-492b-b89a-8a131cf04b79__c6r5amr4k70b0if4kb7758iej7
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
cisco-ci-domain-verification=7ab30713f81d07c44eea6bc370f3a51f2ca7d6c0477a8db10974320ec4bef38f
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
atlassian-domain-verification=pJlgODoOXqMpfPHoasf4sPWDltyOP4cWVg6ptKTMfoozopE7QCq/a8TYq65TmOxv
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
paloaltonetworks-site-verification=4c8489dbb0f064d060aa162bea54173b49b6b9ff55dc915135fe88647087b7ee
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
scnv-verification=03fe4bf81654621682a5c049867fccb4:4fa32facf3797aa643beb4108a6c956c:d986a0a5e1ca4ceb8941e8d9ed54eb11
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
MS=ms93873368
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
Validation no ext
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
soa header update
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
validate post vanity
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
4784qfgb1p5cygmgsszmv4bnfqmk7kct
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
_3m4ex27y3mflwhlg4u1tmecdcn5ybcr
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
_48bmfe210iiq9f44fgsvr0kqrau8c2b
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
_m46ssjls1msf1vk58auxeik4jttglg1
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
_ri3pukftahh7678nis9yjdntb4ng9x2
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
_z9yb4dkbcwn7z68zbmcju1hzw2bdtx9
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
validation and verification zone
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
ZOOM_verify_sCcWC00VT72Xd3cKn3ByDQ
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
apple-domain-verification=FIPflKu9G6kEqyab
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
jamf-site-verification=aIUTcaWCojh8ldgWpayjCg
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
rhino_accounts=f8b043ccf0f03789479ad9ba4d169b0d
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
cloudhealth=a8cf6829-a2b8-4f9f-9945-f71659ede7ff
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
pendo-domain-verification=suZZiVajeuV3K-TVqdF0B7QS9o0
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
amazonses:guDcMedRx3D3yaitJGO/aV+NzhugJRiKDDdKbUXqbLM=
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
docker-verification=278531f6-37fe-485c-89db-334e7b913aa0
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
mongodb-site-verification=POJ3Ib5m6oOyqX91ZrlgcbAFVKwRhMml
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
cursor-domain-verification-gba5jn=lRd0T4XTIOjBR3FYBvBcEMw9k
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
facebook-domain-verification=9qrf9w3jjvoc7r3ry2mv6fds4qd9jd
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
vizcom-domain-verification-athga5=ds19jN3O5UWdzylSOLtvX2QN6
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
github-verification=9rQmuxzyEyx4yq7LjueTPBmTFPNf9xcMKDBpDkkw
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
anthropic-domain-verification-082hk2=8p5BtpG6yUtqZaNmX0mTtMLKu
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
vmware-cloud-verification-b6516934-01c2-4ad1-bedd-11420be6e415
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
52b0ba4a752984fe5aadf8307d978aaad69cc5e0dc654a2f6f011c210bc3d0f8
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
adobe-idp-site-verification=6f949b65-8b97-4bb1-be7a-6088c7b96a98
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
dtm-domain-verification=LmCPecEAhn9C-gGneNj_stFVbTTrES0EtZTslr2YF2c
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
google-site-verification=0tcT2lcGC5FZjgDR2BU_t4PwfRpG5TdMC3W7Uq8tleI
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
google-site-verification=AqwT-_WzscdFOiacOoMpw-aMjwRDmJLuT9cHH3zFfkw
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
google-site-verification=JjQcml7P2JjvkTRFwUtkeEGy6-Pehs-zJ3YC2bVcCp4
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
google-site-verification=Ot6fp-6zJPJw5lHQXZm5Lhs3nCmRp7EW2eHn5htn_3A
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
_globalsign-domain-verification=oTFxDWw1mdzzP-Zd45wwC6Ifc6nSakWOmRQSYD_XHz
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
atlassian-sending-domain-verification=addc73ef-6fc8-4d74-a015-9b63ec7809a1
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
stripe-verification=3e045226dd7579f3fea910186ec8aee832e44fecd5d5e89f690efed18c3f38fd
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com TXT
stripe-verification=c814f4607c0171c39868805fb1ae7723a2d91d54b0c3149eb8ec46aad7a7be6f
5 minutes (300s) Lookup Overhead Instant Propagation
nike.com A
54.192.100.112
47 seconds Lookup Overhead Instant Propagation
e2785.x.akamaiedge.net A
23.60.174.110
20 seconds Lookup Overhead Instant Propagation
www.nike.com CNAME
www.nike.com-v1.edgekey.net
5 minutes (300s) Lookup Overhead Instant Propagation

Note: This may not be all your DNS records — only the records we were able to find.

Actionable Recommendations & Best Practices
[Performance] Increase TTL for Everyday Traffic

If you are not currently migrating servers, increase your A, AAAA, and CNAME TTL values to at least 3,600s (1 hour) or 86,400s (24 hours). This allows ISPs and browsers to cache your DNS response, cutting initial page connection time.

[Performance] Eliminate Ultra-Low TTLs (< 300s)

Ultra-low TTLs cause excessive DNS query traffic and can bottleneck user connection times. Unless backed by a high-frequency global DNS edge/anycast provider (like Cloudflare or Route53), raise these TTLs.

[Best Practice] Post-Migration TTL Restoration

Once your server migration is complete and verified stable for 24 hours, remember to raise your TTL values back to 3,600s or 86,400s to regain optimal DNS caching performance.

Understanding DNS TTL: Performance vs. Agility

DNS Time-to-Live (TTL) is a numerical setting (measured in seconds) attached to every DNS record. It dictates how long recursive DNS resolvers, ISPs, and web browsers are permitted to cache your server's IP address before requesting a fresh update.

Why Low TTL Hurts Everyday Speed

When you set a low TTL (e.g. 300s / 5 minutes) on a domain that is not migrating, every returning visitor's browser or local ISP must continuously send fresh DNS queries to resolve your server IP. This adds an extra 20ms to 150ms round-trip latency to page load times. For everyday stability, TTLs should be set to 3,600s (1 hour) or 86,400s (24 hours).

How to Manage TTL for Zero-Downtime Migration

If you are planning to switch web hosts or move to a new server IP, follow this two-step process:
1. 24 hours BEFORE migration: Reduce your A and CNAME TTL values to 300s (5 minutes).
2. 24 hours AFTER migration: Once the new IP is verified stable, raise your TTL back to 3,600s or 86,400s to regain maximum DNS caching speed.