CIDR Range
42.101.8.0/21
Addresses
2,048
2.0K
Sub-ranges
0+
within this block
PTR Density
0.0%
0 of 2.0K IPs have PTR
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.
71/100
Moderate
How this score is built
- Baseline (neutral) 65
- Long-established allocation (15y) +6
- Trust score 71 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Geolocation
First 256 of 2,048 IP addresses in 42.101.8.0/21
42.101.8.0
42.101.8.1
42.101.8.2
42.101.8.3
42.101.8.4
42.101.8.5
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42.101.8.254
42.101.8.255
+ 1.8K more (range too large to list inline)
BGP Routing
Live BGP anomalies →This block is announced in BGP, observed across our RIPE RIS collectors.
Announced prefix
Origin AS
Announcement samples
19,382
Last seen
2026-07-24 10:13:49
Frequently Asked Questions
What is 42.101.8.0/21?
42.101.8.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 42.101.8.0 to 42.101.15.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 42.101.8.0/21 network?
The 42.101.8.0/21 range is allocated to HaerbingHeilongjiang Province, P.R.China. and announced via AS137698 from China.
Last updated: 2026-07-24 10:25:31 UTC
