210.208.8.0/21
At a glance
Addresses
/21 block
Visibility
17 of 80 vantage points
RPKI
Registry
TWAllocated 10th December 1997
AS paths to this prefix
All pathsOne observed path, hop by hop, from the origin out to Oregon, US.
Seen from Oregon, US
- Peer of AS7656seen on 1,135 paths from 11 vantage points
- Peer of AS10133seen on 1,679 paths from 27 vantage points
- Peer of AS6939seen on 975,334 paths from 1 vantage point
USOne path, hop by hop, from the origin outward to the vantage point that saw it. Counts beside each step are how often we see that pair adjacent anywhere in the table, not how often this path was used — BGP carries no traffic figures.
Every path we see
- Singapore7656101336939132337This path
- Oregon, US765610133693920130Shown above
- Amsterdam76561013369395829941051213151This path
Each row is one path genuinely present in the routing table at our last snapshot, read outward from the origin to the vantage point that saw it. Open a row to follow that one path hop by hop. A heavier line in the graph means more vantage points reach the prefix that same way.
Route visibility
21%
Seen by 17 of 80 full-feed vantage points
Seen by few vantage pointsObserved at 5 of our collectors.
What this percentage counts
The denominator counts only full-feed peers — peers carrying a substantially complete routing table at the moment of the snapshot. IXP route-server peers usually feed partial tables and are excluded, because including them would make a normally propagated prefix look as though half the internet could not see it.
It measures how widely an announcement has spread across the networks we can observe. It says nothing about whether the prefix is reachable from any particular place, or how it performs.
Registry and RPKI
- RIR
- APNIC — Asia-Pacific
- Country
- Taiwan
- Allocated
- 10th December 1997
- Allocation block
- 210.208.0.0/18
- Status
- allocated
- Origin validation
- Valid
A ROA exists that authorises this origin AS to announce this prefix at this length.
ROAs covering this prefix
| ROA prefix | Authorised origin | Max length |
|---|---|---|
| 210.208.0.0/18 | AS7656 | /24 |
Prefix hierarchy
Announcements above, below and beside this one in the real routing table.
Left to right is specificity: a shorter mask covering more address space, then this prefix, then the announcements carved out inside it. Only the first few of each are drawn — the tables below list them all.
Covering announcements
| Prefix | Addresses | Origin | Visibility |
|---|---|---|---|
| 210.208.0.0/19 | 8.2k | AS7656Taiwan Network Access Point | 79/80 |
| 210.208.0.0/18 | 16.4k | AS7656Taiwan Network Access Point | 79/80 |
More specific announcements
Nothing inside this block is announced separately.
Sibling prefixes
| Prefix | Addresses | Origin | Visibility |
|---|---|---|---|
| 210.208.0.0/21 | 2k | AS7656Taiwan Network Access Point | 17/80 |
History
- AS765612th August 2026 — present
Why these dates start where they do
A first-seen date is the first time we saw that origin, not the first time it appeared in BGP. Our history is forward-only with no backfill, so it says nothing about the period before we started collecting — treat the earliest dates with suspicion.
Open 210.208.8.0/21 in the calculator/21 reference
Routing data derived from RouteViews MRT archives and public registry data.