[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view

REN Routing Table Report cscora at bgp.nsrc.org
Tue Mar 19 20:10:37 UTC 2024


IPv4 R&E Routing Table Report   20:10 GMT Tue 19 Mar, 2024

  IPv4 BGP Table (R&E) as seen at CERNET.

Report Website:     https://bgp.nsrc.org/REN
Detailed Analysis:  https://bgp.nsrc.org/REN/CERNET/

Analysis Summary
----------------

BGP routing table entries examined:                                7550
    Prefixes after maximum aggregation (per Origin AS):            4738
    Deaggregation factor:                                          1.59
    Unique aggregates announced (without unneeded subnets):        5194
    Number of IPv4 prefixes with a valid ROA:                      3200
    Number of IPv4 prefixes with an invalid ROA:                      6
    Number of IPv4 prefixes with no ROA:                           4344
Total ASes present in the Internet Routing Table:                  1178
    Prefixes per ASN:                                              6.41
Origin-only ASes present in the Internet Routing Table:            1014
Origin ASes announcing only one prefix:                             512
Transit ASes present in the Internet Routing Table:                 164
Transit-only ASes present in the Internet Routing Table:             41
Paths with bogon ASNs present in the IPv4 Routing Table:              0
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      14
    Max AS path prepend of ASN ( 20537)                               9
Prefixes from unregistered ASNs in the Routing Table:                 2
    Number of instances of unregistered ASNs:                         2
Number of 32-bit ASNs allocated by the RIRs:                      43854
Number of 32-bit ASNs visible in the Routing Table:                 354
Prefixes from 32-bit ASNs in the Routing Table:                    1040
Number of bogon 32-bit ASNs visible in the Routing Table:             0
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:              1
Number of addresses announced to Internet:                    101322000
    Equivalent to 6 /8s, 10 /16s and 13 /24s
    Percentage of available address space announced:                2.7
    Percentage of allocated address space announced:                2.7
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.6
Total number of prefixes smaller than registry allocations:         734

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                     3883
    Total APNIC prefixes after maximum aggregation:                2053
    APNIC Deaggregation factor:                                    1.89
Prefixes being announced from the APNIC address blocks:            3884
    Unique aggregates announced from the APNIC address blocks:     2448
APNIC Region origin ASes present in the Internet Routing Table:     516
    APNIC Prefixes per ASN:                                        7.53
APNIC Region origin ASes announcing only one prefix:                229
APNIC Region transit ASes present in the Internet Routing Table:     51
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         14
Number of APNIC region 32-bit ASNs visible in the Routing Table:    212
Number of APNIC addresses announced to Internet:               43116544
    Equivalent to 2 /8s, 145 /16s and 232 /24s
APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 63488-64098, 64297-64395, 131072-153913
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
                       163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
                       203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
                       222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                        68
    Total ARIN prefixes after maximum aggregation:                   25
    ARIN Deaggregation factor:                                     2.72
Prefixes being announced from the ARIN address blocks:               78
    Unique aggregates announced from the ARIN address blocks:        36
ARIN Region origin ASes present in the Internet Routing Table:       12
    ARIN Prefixes per ASN:                                         6.50
ARIN Region origin ASes announcing only one prefix:                   5
ARIN Region transit ASes present in the Internet Routing Table:       7
Average ARIN Region AS path length visible:                         6.0
    Max ARIN Region AS path length visible:                           9
Number of ARIN region 32-bit ASNs visible in the Routing Table:       1
Number of ARIN addresses announced to Internet:                  477184
    Equivalent to 0 /8s, 7 /16s and 72 /24s
ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
                       3354-4607, 4865-5119, 5632-6655, 6912-7466
                       7723-8191, 10240-12287, 13312-15359, 16384-17407
                       18432-20479, 21504-23551, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863, 39936-40959, 46080-47103
                       53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  47/8,  48/8,  50/8,  52/8,  53/8,
                        54/8,  55/8,  56/8,  57/8,  63/8,  64/8,  65/8,
                        66/8,  67/8,  68/8,  69/8,  70/8,  71/8,  72/8,
                        73/8,  74/8,  75/8,  76/8,  96/8,  97/8,  98/8,
                        99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
                       130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
                       138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
                       147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
                       158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
                       166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
                       174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
                       206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
                      

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                      3104
    Total RIPE prefixes after maximum aggregation:                 2615
    RIPE Deaggregation factor:                                     1.19
Prefixes being announced from the RIPE address blocks:             3094
    Unique aggregates announced from the RIPE address blocks:      2647
RIPE Region origin ASes present in the Internet Routing Table:      584
    RIPE Prefixes per ASN:                                         5.30
RIPE Region origin ASes announcing only one prefix:                 266
RIPE Region transit ASes present in the Internet Routing Table:      91
Average RIPE Region AS path length visible:                         3.8
    Max RIPE Region AS path length visible:                          12
Number of RIPE region 32-bit ASNs visible in the Routing Table:     131
Number of RIPE addresses announced to Internet:                57022224
    Equivalent to 3 /8s, 102 /16s and 23 /24s
RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 61952-62463, 64396-64495
                       196608-216475
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                       2
    Total LACNIC prefixes after maximum aggregation:                  2
    LACNIC Deaggregation factor:                                   1.00
Prefixes being announced from the LACNIC address blocks:              2
    Unique aggregates announced from the LACNIC address blocks:       2
LACNIC Region origin ASes present in the Internet Routing Table:      2
    LACNIC Prefixes per ASN:                                       1.00
LACNIC Region origin ASes announcing only one prefix:                 2
LACNIC Region transit ASes present in the Internet Routing Table:     0
Average LACNIC Region AS path length visible:                       6.5
    Max LACNIC Region AS path length visible:                         8
Number of LACNIC region 32-bit ASNs visible in the Routing Table:     0
Number of LACNIC addresses announced to Internet:                   512
    Equivalent to 0 /8s, 0 /16s and 2 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                    491
    Total AfriNIC prefixes after maximum aggregation:                41
    AfriNIC Deaggregation factor:                                 11.98
Prefixes being announced from the AfriNIC address blocks:           491
    Unique aggregates announced from the AfriNIC address blocks:     60
AfriNIC Region origin ASes present in the Internet Routing Table:    22
    AfriNIC Prefixes per ASN:                                     22.32
AfriNIC Region origin ASes announcing only one prefix:               10
AfriNIC Region transit ASes present in the Internet Routing Table:    5
Average AfriNIC Region AS path length visible:                      4.0
    Max AfriNIC Region AS path length visible:                        6
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   10
Number of AfriNIC addresses announced to Internet:               705280
    Equivalent to 0 /8s, 10 /16s and 195 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks  41/8,  45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
                      

APNIC Region per AS prefix count summary
----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2907         591       2162     464  SINET-AS Research Organization of Infor
  1237         192         74     142  KREONET-AS-KR KISTI, KR
 58647         182         18       2  KAGAWAU-AS Kagawa University, JP
  7575         171        329     116  AARNET-AS-AP Australian Academic and Re
 55824         131         19      19  NKN-CORE-NW NKN Core Network, IN
  4538         113       4176      70  ERX-CERNET-BKB China Education and Rese
  4762          71          4       1  MAHIDOL-BORDER-AS Mahidol University, T
  4621          70         37      10  UNINET-AS-AP UNINET-, TH
  9411          66         16       2  NONTRINET-AS-AP Kasetsart University, T
 23570          59          5      11  INCHEON-AS-KR UNIVERSITY OF INCHEON, KR

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  6360          49         62       9  UNIVHAWAII, US
 26100           3          1       3  NOAA-PACIFIC-REGION-CENTER, US
 36599           3          0       2  SOFTETHER-AMERICA, US
   112           2          0       2  RESERVED, ZZ
   195           2          4       1  SDSC-AS, US
 20144           2          0       1  IMRS, US
396690           2          0       2  VRSN-AC50-340, US
   577           1          0       1  BACOM, CA
  3557           1          0       1  ISC-AS, US
 30133           1          0       1  ISC-F-AS, US

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
   680         284       1899     250  DFN Verein zur Foerderung eines Deutsch
   786         184       1767     181  JANET Jisc Services Limited, GB
   559         114        533     104  SWITCH Peering requests: peering at switch
  1103          95       1503      83  SURFNET-NL SURFnet, The Netherlands, NL
  2614          93         27      73  ROEDUNET, RO
   137          81        676      77  ASGARR Consortium GARR, IT
  1930          79         88      74  RCCN Fundacao para a Ciencia e a Tecnol
   553          78        462      78  BELWUE BelWue-Koordination, DE
  2200          63        598      58  FR-RENATER Reseau National de telecommu
200521          56          4      20  SEAP-AGE, ES

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 10906           1          0       1  Nucleo de Inf. e Coord. do Ponto BR - N
 14650           1          0       1  Nucleo de Inf. e Coord. do Ponto BR - N

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 36914         206         82       3  KENET-AS, KE
327687         163         28       3  RENU, UG
327700          44         16       1  MoRENet, MZ
  6879          24          2       9  ENSTINET-, EG
 37654          11          1       6  RwEdNet-AS, RW
 37215           9          8       1  MAREN, MW
 37182           6          8       1  TERNET, TZ
 31960           5          1       1  EMUNET, MZ
328358           5          1       1  Makerere-AS, UG
328813           4          0       1  UCU-AS, UG

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2907         591       2162     464  SINET-AS Research Organization of Infor
   680         284       1899     250  DFN Verein zur Foerderung eines Deutsch
 36914         206         82       3  KENET-AS, KE
  1237         192         74     142  KREONET-AS-KR KISTI, KR
   786         184       1767     181  JANET Jisc Services Limited, GB
 58647         182         18       2  KAGAWAU-AS Kagawa University, JP
  7575         171        329     116  AARNET-AS-AP Australian Academic and Re
327687         163         28       3  RENU, UG
 55824         131         19      19  NKN-CORE-NW NKN Core Network, IN
   559         114        533     104  SWITCH Peering requests: peering at switch

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
 36914         206          203  KENET-AS, KE
 58647         182          180  KAGAWAU-AS Kagawa University, JP
327687         163          160  RENU, UG
 55824         131          112  NKN-CORE-NW NKN Core Network, IN
  4762          71           70  MAHIDOL-BORDER-AS Mahidol University, Thailand,
  9411          66           64  NONTRINET-AS-AP Kasetsart University, Thailand,
  4621          70           60  UNINET-AS-AP UNINET-, TH
  7575         171           55  AARNET-AS-AP Australian Academic and Research N
  1237         192           50  KREONET-AS-KR KISTI, KR
 23570          59           48  INCHEON-AS-KR UNIVERSITY OF INCHEON, KR

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
     11570  UNALLOCATED  63.225.1.0/24            40498  ABQG, US
     11570  UNALLOCATED  216.161.32.0/23          40498  ABQG, US

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
192.31.196.0/24      Origin:       112  RESERVED, ZZ
192.31.196.0/24     Transit:      7500  M-ROOT-DNS WIDE Project, JP

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:0        /9:0       /10:0       /11:1       /12:9       
/13:15      /14:24      /15:100     /16:991     /17:126     /18:120     
/19:192     /20:259     /21:373     /22:696     /23:647     /24:3987    
/25:6       /26:3       /27:0       /28:1       /29:0       /30:0       
/31:0       /32:0       

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

   ASN  No of nets  Total ann.  Description
 36914         193         206  KENET-AS, KE
327700          38          44  MoRENet, MZ
200521          33          56  SEAP-AGE, ES
327687          29         163  RENU, UG
 31638          21          21  ASN-LEPIDA, IT
  3233          19          29  ICI-ROTLD Romanian National R&D Network, RO
  2614          16          93  ROEDUNET, RO
 28949          15          15  TUSNET-AS 8, Kliment Ohridski St., BG
 60187          15          36  LGFL-AS, GB
  5408          13          38  GR-NET www.grnet.gr, GR

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:1         5:15       14:91       24:2        31:1        41:120    
  44:4        45:18       46:5        49:5        59:18       61:3      
  62:6        63:1        74:3        77:8        78:3        79:10     
  80:9        81:25       82:2        83:6        84:7        85:24     
  87:1        89:10       91:37       93:4        94:2        95:2      
 102:30      103:310     109:2       111:16      114:24      116:8      
 117:61      118:32      119:1       121:18      122:8       123:8      
 125:2       128:34      129:7       130:5       131:12      132:2      
 133:157     134:33      137:79      138:8       143:6       144:22     
 145:2       146:1       147:8       148:6       150:21      151:2      
 152:3       153:12      154:6       155:5       156:7       157:2      
 158:30      159:1       160:26      161:6       163:4       165:38     
 167:3       168:7       175:25      180:14      182:8       184:1      
 185:43      188:11      192:608     193:252     194:114     195:69     
 196:59      197:118     199:1       200:2       202:520     203:412    
 205:2       210:115     211:14      212:42      213:2       217:10     
 218:3       219:5       220:18      222:1      

End of report


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