2001:500:7967::/48
Verisign Anycast DE 0EAS397197
Verisign Anycast GB 0HAS397194
Verisign Anycast JP 0EAS396605
Verisign Anycast US 1IAS396574
Verisign Anycast US 1QAS396583
Verisign Anycast DE 0PAS397209
Verisign Anycast US 0LAS396545
Verisign Anycast GB 0GAS397193
Verisign Anycast US 2CAS396612
Announced by more than one origin AS (MOAS).
At a glance
Subnets
/48 block
Visibility
32 of 62 vantage points
RPKI
Registry
USAllocated 18th May 2010
AS paths to this prefix
One real path per vantage point, fanning out from the origin. Where two reach the prefix the same way, those hops are drawn once. Open a path to follow it hop by hop.
- Amsterdam3971977342213151This path
- London, UK397197734251907This path
- Singapore3971977342132337This path
- Sao Paulo3971977342719532590This 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
52%
Seen by 32 of 62 full-feed vantage points
Partially propagatedObserved at 4 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
- ARIN — North America
- Country
- United States
- Allocated
- 18th May 2010
- Allocation block
- 2001:500:7967::/48
- 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 |
|---|---|---|
| 2001:500:7967::/48 | AS10515 | /48 |
| 2001:500:7967::/48 | AS19836 | /48 |
| 2001:500:7967::/48 | AS20172 | /48 |
| 2001:500:7967::/48 | AS20362 | /48 |
| 2001:500:7967::/48 | AS20431 | /48 |
| 2001:500:7967::/48 | AS211369 | /48 |
| 2001:500:7967::/48 | AS21313 | /48 |
| 2001:500:7967::/48 | AS22547 | /48 |
| 2001:500:7967::/48 | AS25485 | /48 |
| 2001:500:7967::/48 | AS27544 | /48 |
| 2001:500:7967::/48 | AS32651 | /48 |
| 2001:500:7967::/48 | AS36616 | /48 |
| 2001:500:7967::/48 | AS36617 | /48 |
| 2001:500:7967::/48 | AS36618 | /48 |
| 2001:500:7967::/48 | AS36619 | /48 |
| 2001:500:7967::/48 | AS36620 | /48 |
| 2001:500:7967::/48 | AS36621 | /48 |
| 2001:500:7967::/48 | AS36622 | /48 |
| 2001:500:7967::/48 | AS36623 | /48 |
| 2001:500:7967::/48 | AS36624 | /48 |
Prefix hierarchy
Announcements above, below and beside this one in the real routing table.
Covering announcements
No less specific announcement covers this prefix.
More specific announcements
Nothing inside this block is announced separately.
Sibling prefixes
No prefix of the same length in the same parent block is announced.
History
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.
Routing data derived from RouteViews MRT archives and public registry data.