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IPv4 Address

220.66.90.151

KOREA ADVANCING SCHOOLS FOUNDATION AS45397 · KOREA ADVANCING SCHOOLS FOUNDATION South Korea APNIC
Within
220.64.0.0/11
CIDR
220.66.90.0/24
/24 · 256 IPs
ASN
AS45397
KOREA ADVANCING SCHOOLS FOUNDATION
Reverse DNS
vpn.kasfo.or.kr
Last scanned 1 days ago
Blocklisted
Checking…
Scanning blocklists

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

86/100
Trusted
How this score is built

Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →

DNS records

Reverse DNS (PTR)
vpn1.kasfo.or.kr
Forward-confirmed (FCrDNS)
✓ Confirmed
PTR TTL
3600 s
Reverse DNS last checked
2026-10-23 01:05 UTC
Forward DNS last checked
2026-10-23 01:05 UTC
every IP & sub-domain we've seen under this domain

Reverse & forward DNS collected by the WorldIP scanner fleet — FCrDNS confirms the PTR hostname resolves back to this IP.

Domains hosted

as of 2026-10-18 UTC

0

issued.live's latest DNS data shows no domain resolving to this IP.

Domain data provided by issued.live — for full details visit https://issued.live/pricing

Reverse DNS history

How this IP's reverse DNS (PTR) has changed over time, from our scans.

This IP's reverse DNS changes frequently — the timeline below shows the most recent changes.

  1. vpn1.kasfo.or.kr — Oct 23, 2026 → present
  2. vpn.kasfo.or.kr — Oct 21, 2026 → Oct 23, 2026
  3. ssl.kasfo.or.kr — Oct 21, 2026 → Oct 21, 2026
  4. ssl3.kasfo.or.kr — Oct 20, 2026 → Oct 21, 2026
  5. vpn.kasfo.or.kr — Oct 20, 2026 → Oct 20, 2026
  6. ssl3.kasfo.or.kr — Oct 19, 2026 → Oct 20, 2026
  7. ssl.kasfo.or.kr — Oct 18, 2026 → Oct 19, 2026
  8. vpn1.kasfo.or.kr — Oct 17, 2026 → Oct 18, 2026
  9. vpn.kasfo.or.kr — Oct 17, 2026 → Oct 17, 2026
  10. ssl3.kasfo.or.kr — Oct 16, 2026 → Oct 17, 2026
  11. vpn.kasfo.or.kr — Oct 16, 2026 → Oct 16, 2026
  12. ssl.kasfo.or.kr — Oct 15, 2026 → Oct 16, 2026
  13. vpn.kasfo.or.kr — Oct 13, 2026 → Oct 15, 2026
  14. vpn1.kasfo.or.kr — Oct 12, 2026 → Oct 13, 2026
  15. ssl.kasfo.or.kr — Oct 12, 2026 → Oct 12, 2026
  16. ssl3.kasfo.or.kr — Oct 11, 2026 → Oct 12, 2026
  17. ssl.kasfo.or.kr — Oct 10, 2026 → Oct 11, 2026
  18. vpn.kasfo.or.kr — Oct 10, 2026 → Oct 10, 2026
  19. vpn1.kasfo.or.kr — Oct 9, 2026 → Oct 10, 2026
  20. ssl3.kasfo.or.kr — Oct 8, 2026 → Oct 9, 2026
  21. vpn1.kasfo.or.kr — Oct 8, 2026 → Oct 8, 2026
  22. vpn.kasfo.or.kr — Oct 7, 2026 → Oct 8, 2026
  23. vpn1.kasfo.or.kr — Oct 6, 2026 → Oct 7, 2026
  24. ssl.kasfo.or.kr — Oct 5, 2026 → Oct 6, 2026
  25. vpn.kasfo.or.kr — Oct 4, 2026 → Oct 5, 2026
  26. ssl3.kasfo.or.kr — Oct 3, 2026 → Oct 4, 2026
  27. vpn.kasfo.or.kr — Oct 3, 2026 → Oct 3, 2026
  28. vpn1.kasfo.or.kr — Oct 2, 2026 → Oct 3, 2026
  29. ssl.kasfo.or.kr — Oct 2, 2026 → Oct 2, 2026
  30. vpn1.kasfo.or.kr — Oct 1, 2026 → Oct 2, 2026
  31. ssl.kasfo.or.kr — Sep 30, 2026 → Oct 1, 2026
  32. vpn.kasfo.or.kr — Sep 30, 2026 → Sep 30, 2026
  33. vpn1.kasfo.or.kr — Sep 29, 2026 → Sep 30, 2026
  34. ssl.kasfo.or.kr — Sep 28, 2026 → Sep 29, 2026
  35. ssl3.kasfo.or.kr — Sep 28, 2026 → Sep 28, 2026
  36. vpn1.kasfo.or.kr — Sep 27, 2026 → Sep 28, 2026
  37. ssl.kasfo.or.kr — Sep 27, 2026 → Sep 27, 2026
  38. ssl3.kasfo.or.kr — Sep 26, 2026 → Sep 27, 2026
  39. vpn.kasfo.or.kr — Sep 25, 2026 → Sep 26, 2026
  40. ssl3.kasfo.or.kr — Aug 25, 2026 → Sep 25, 2026
  41. vpn1.kasfo.or.kr — Aug 18, 2026 → Aug 25, 2026
  42. vpn.kasfo.or.kr — Aug 18, 2026 → Aug 18, 2026
  43. vpn1.kasfo.or.kr — Jul 7, 2026 → Aug 18, 2026
  44. ssl3.kasfo.or.kr — Jul 2, 2026 → Jul 7, 2026
  45. vpn.kasfo.or.kr — Jul 2, 2026 → Jul 2, 2026
  46. ssl.kasfo.or.kr — Jun 20, 2026 → Jul 2, 2026

Network Allocation for 220.66.90.151

CIDR range
220.66.90.0/24
IP range (int)
3,695,335,936 — 3,695,336,191
Prefix length
/24
Organization
KOREA ADVANCING SCHOOLS FOUNDATION
ASN
AS45397
ASN name
KOREA ADVANCING SCHOOLS FOUNDATION
Location
South Korea
Coordinates
37.511200, 126.974100
Accuracy radius
200 km
Regional Internet Registry
APNIC
Allocated
2002-07-22
Data source(s)
maxmind_asn, ipinfo_lite, maxmind_city, maxmind_country
Last updated
2026-10-21 08:40:23

BGP Routing

Live BGP anomalies →

Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.

Announced prefix
220.66.90.0/24
Origin AS
AS45397
Announcement samples
23,300
Last seen
2026-10-23 12:53:47

RIR Ownership History

Atom feed ⇲

Allocation changes captured from regional internet registry (RIR) delegation files, re-imported every six hours, for ranges that have contained this IP.

Date Event From To
2026-05-10 New Allocation — KR

See the full history for 220.64.0.0/11.

Frequently Asked Questions

Who owns 220.66.90.151?

220.66.90.151 is allocated to KOREA ADVANCING SCHOOLS FOUNDATION (AS45397), registered in South Korea.

Where is 220.66.90.151 located?

The geolocation for 220.66.90.151 maps to South Korea based on MaxMind GeoLite2 data. Accuracy depends on the provider and may represent the ISP's regional hub rather than the exact endpoint.

What network is 220.66.90.151 on?

220.66.90.151 belongs to the 220.66.90.0/24 network block announced by AS45397. This range contains 256 addresses.

Does 220.66.90.151 have a reverse DNS record?

Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.

Neighbors

Other addresses in the same /24.

220.66.90.143 220.66.90.144 220.66.90.145 220.66.90.146 220.66.90.147 220.66.90.148 220.66.90.149 220.66.90.150 220.66.90.152 220.66.90.153 220.66.90.154 220.66.90.155 220.66.90.156 220.66.90.157 220.66.90.158 220.66.90.159 See all in 220.64.0.0/11 →

Related

/24 neighborhood /16 block /8 block All AS45397 ranges All KOREA ADVANCING SCHOOLS FOUNDATION ranges All South Korea IPs
Last updated: 2026-10-22 15:31:24 UTC
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