Check-Host.cc

IP Prefix IPv6

2606:4700:3037::/48

Aggregated from public BGP, CT logs, our scan layer, honeypots and global probes.

Origin AS
AS13335
RPKI
1 ROAs
Open IPs
last 90 d
Network
Anycast
Cloudflare

Routing

Origin AS
Holder
Cloudflare
Prefix Length
/48
Multi-Origin
No
Last refresh
2026-07-21 13:59:57

RPKI Validity

max-len 48 valid arin

Geographic Announcement

Anycast — Cloudflare. This prefix is announced from many PoPs worldwide simultaneously. The MaxMind "ZZ" code below reflects "no single country" rather than "unknown" — the route taken depends on the BGP best-path of the querying ASN.
GeoIP attribution from MaxMind GeoLite2 (CC-BY-SA). The starting address of the prefix maps to:
Country Continent Ranges
ZZ Anycast / no single country 1

Top Open Ports

No open-port observations

No IPs in this prefix have been observed with open ports in the last 30 days. Either the prefix isn't routed yet, the network drops all unsolicited scans, or our scanner hasn't reached it. Try a fullscan against an IP in this block.

Sample IPs in this Prefix

No IPs scanned in this prefix yet

The CIDR-aware port-scanner hasn't covered any address in this block. Try a fullscan against the network — the new `target=CIDR` support fans the probe across every host.

History

Prefix-event history pending

Origin AS changes, ROA add/drop events, multi-origin episodes and withdrawals require snapshot-diffing across BGP crawls. The data accumulates as the archive grows — full ReplacingMergeTree compaction makes point-in-time event extraction unavailable for now.