2001:503:231d::/48
Verisign Anycast CH 0CAS396661
Verisign Anycast FR 0CAS396707
Verisign Anycast SG 0DAS396729
Verisign Anycast BR 0EAS396659
Verisign Anycast JP 0CAS397199
Verisign Anycast CH 0AAS396761
Verisign Anycast DE 0CAS396747
Verisign Anycast SI 0AAS396690
Verisign Anycast FI 0BAS396662
Verisign Anycast RS 0AAS396625
Verisign Anycast CZ 0AAS396714
Verisign Anycast IE 0AAS396653
Verisign Anycast PT 0AAS396689
Verisign Anycast KW 0AAS396682
Verisign Anycast BG 0AAS396735
Verisign Anycast ZA 0AAS396642
Verisign Anycast AU 0AAS396738
Verisign Anycast IN 0BAS396629
Announced by more than one origin AS (MOAS).
At a glance
Subnets
/48 block
Visibility
13 of 65 vantage points
RPKI
Registry
USAllocated 3rd June 2004
AS paths to this prefix
All pathsOne observed path, hop by hop, from the origin out to Sao Paulo.
Seen from Sao Paulo
- Peer of AS396659seen on 19 paths from 10 vantage points
- Peer of AS26415seen on 6 paths from 4 vantage points
FROne 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
- Amsterdam396761264158298This path
- Sao Paulo3966592641535280Shown above
- Singapore3966612641525091132337This 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
20%
Seen by 13 of 65 full-feed vantage points
Seen by few vantage pointsObserved at 3 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
- 3rd June 2004
- Allocation block
- 2001:503:231d::/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 |
|---|---|---|
| 2001:503:231d::/48 | AS10515 | /48 |
| 2001:503:231d::/48 | AS19836 | /48 |
| 2001:503:231d::/48 | AS20172 | /48 |
| 2001:503:231d::/48 | AS20362 | /48 |
| 2001:503:231d::/48 | AS20431 | /48 |
| 2001:503:231d::/48 | AS211369 | /48 |
| 2001:503:231d::/48 | AS21313 | /48 |
| 2001:503:231d::/48 | AS22547 | /48 |
| 2001:503:231d::/48 | AS25485 | /48 |
| 2001:503:231d::/48 | AS26415 | /48 |
| 2001:503:231d::/48 | AS27544 | /48 |
| 2001:503:231d::/48 | AS32651 | /48 |
| 2001:503:231d::/48 | AS36616 | /48 |
| 2001:503:231d::/48 | AS36617 | /48 |
| 2001:503:231d::/48 | AS36618 | /48 |
| 2001:503:231d::/48 | AS36619 | /48 |
| 2001:503:231d::/48 | AS36620 | /48 |
| 2001:503:231d::/48 | AS36621 | /48 |
| 2001:503:231d::/48 | AS36622 | /48 |
| 2001:503:231d::/48 | AS36623 | /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.