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

REN Routing Table Report cscora at bgp.nsrc.org
Sat Nov 18 17:05:38 UTC 2023


IPv4 R&E Routing Table Report   17:05 GMT Sat 18 Nov, 2023

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

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

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

BGP routing table entries examined:                               14286
    Prefixes after maximum aggregation (per Origin AS):            8432
    Deaggregation factor:                                          1.69
    Unique aggregates announced (without unneeded subnets):        9238
    Number of IPv4 prefixes with a valid ROA:                      4278
    Number of IPv4 prefixes with an invalid ROA:                      2
    Number of IPv4 prefixes with no ROA:                          10006
Total ASes present in the Internet Routing Table:                  2215
    Prefixes per ASN:                                              6.45
Origin-only ASes present in the Internet Routing Table:            1926
Origin ASes announcing only one prefix:                             882
Transit ASes present in the Internet Routing Table:                 289
Transit-only ASes present in the Internet Routing Table:             50
Paths with bogon ASNs present in the IPv4 Routing Table:              0
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      16
    Max AS path prepend of ASN ( 30116)                              10
Prefixes from unregistered ASNs in the Routing Table:                 9
    Number of instances of unregistered ASNs:                         9
Number of 32-bit ASNs allocated by the RIRs:                      43070
Number of 32-bit ASNs visible in the Routing Table:                 533
Prefixes from 32-bit ASNs in the Routing Table:                    1574
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:              3
Number of addresses announced to Internet:                    181354656
    Equivalent to 10 /8s, 207 /16s and 64 /24s
    Percentage of available address space announced:                4.9
    Percentage of allocated address space announced:                4.9
    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:        1479

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

Prefixes being announced by APNIC Region ASes:                     3314
    Total APNIC prefixes after maximum aggregation:                1751
    APNIC Deaggregation factor:                                    1.89
Prefixes being announced from the APNIC address blocks:            3312
    Unique aggregates announced from the APNIC address blocks:     1896
APNIC Region origin ASes present in the Internet Routing Table:     418
    APNIC Prefixes per ASN:                                        7.92
APNIC Region origin ASes announcing only one prefix:                195
APNIC Region transit ASes present in the Internet Routing Table:     44
Average APNIC Region AS path length visible:                        4.0
    Max APNIC Region AS path length visible:                         16
Number of APNIC region 32-bit ASNs visible in the Routing Table:    167
Number of APNIC addresses announced to Internet:               43709536
    Equivalent to 2 /8s, 154 /16s and 244 /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:                      6457
    Total ARIN prefixes after maximum aggregation:                 3751
    ARIN Deaggregation factor:                                     1.72
Prefixes being announced from the ARIN address blocks:             6480
    Unique aggregates announced from the ARIN address blocks:      4189
ARIN Region origin ASes present in the Internet Routing Table:     1009
    ARIN Prefixes per ASN:                                         6.42
ARIN Region origin ASes announcing only one prefix:                 356
ARIN Region transit ASes present in the Internet Routing Table:     121
Average ARIN Region AS path length visible:                         5.0
    Max ARIN Region AS path length visible:                          14
Number of ARIN region 32-bit ASNs visible in the Routing Table:     155
Number of ARIN addresses announced to Internet:                78247136
    Equivalent to 4 /8s, 169 /16s and 244 /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:                      2899
    Total RIPE prefixes after maximum aggregation:                 2422
    RIPE Deaggregation factor:                                     1.20
Prefixes being announced from the RIPE address blocks:             2886
    Unique aggregates announced from the RIPE address blocks:      2498
RIPE Region origin ASes present in the Internet Routing Table:      568
    RIPE Prefixes per ASN:                                         5.08
RIPE Region origin ASes announcing only one prefix:                 253
RIPE Region transit ASes present in the Internet Routing Table:      84
Average RIPE Region AS path length visible:                         3.7
    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:                55009664
    Equivalent to 3 /8s, 71 /16s and 97 /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:                     999
    Total LACNIC prefixes after maximum aggregation:                430
    LACNIC Deaggregation factor:                                   2.32
Prefixes being announced from the LACNIC address blocks:            997
    Unique aggregates announced from the LACNIC address blocks:     556
LACNIC Region origin ASes present in the Internet Routing Table:    124
    LACNIC Prefixes per ASN:                                       8.04
LACNIC Region origin ASes announcing only one prefix:                54
LACNIC Region transit ASes present in the Internet Routing Table:    22
Average LACNIC Region AS path length visible:                       4.8
    Max LACNIC Region AS path length visible:                        10
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    54
Number of LACNIC addresses announced to Internet:               3411936
    Equivalent to 0 /8s, 52 /16s and 15 /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:                    608
    Total AfriNIC prefixes after maximum aggregation:                71
    AfriNIC Deaggregation factor:                                  8.56
Prefixes being announced from the AfriNIC address blocks:           608
    Unique aggregates announced from the AfriNIC address blocks:     96
AfriNIC Region origin ASes present in the Internet Routing Table:    44
    AfriNIC Prefixes per ASN:                                     13.82
AfriNIC Region origin ASes announcing only one prefix:               24
AfriNIC Region transit ASes present in the Internet Routing Table:    8
Average AfriNIC Region AS path length visible:                      4.1
    Max AfriNIC Region AS path length visible:                        8
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   26
Number of AfriNIC addresses announced to Internet:               910336
    Equivalent to 0 /8s, 13 /16s and 228 /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         598       2162     466  SINET-AS Research Organization of Infor
  7497         437        180      23  CSTNET-AS-AP Computer Network Informati
  4538         182       4193      75  ERX-CERNET-BKB China Education and Rese
  7575         177        329     120  AARNET-AS-AP Australian Academic and Re
 58647         177         18       2  KAGAWAU-AS Kagawa University, JP
 55824         127         19      17  NKN-CORE-NW NKN Core Network, IN
  2697          58          4      34  ERX-ERNET-AS Education and Research Net
  1659          51       1450      34  ERX-TANET-ASN1 Taiwan Academic Network 
 45773          48          3       5  HECPERN-AS-PK PERN AS Content Servie Pr
132524          47          9      12  TIFR-AS Tata Institute of Fundamental R

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
   376         202        178     151  RISQ-AS, CA
  5786         197         16       1  UPRENET, PR
  2152         145        507      93  CSUNET-NW, US
 18558         141         18       4  NETBLK-RCOEK, US
    81         126        521      30  NCREN, US
   270         118        329      82  AS270, US
 23024         112          7      19  OCDE, US
 32440         111         35      18  LONI, US
  2920         103         34       7  LACOE, US
 21976          80         51      18  NJEDGE-NET, US

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
   680         283       1903     249  DFN Verein zur Foerderung eines Deutsch
   786         185       1767     182  JANET Jisc Services Limited, GB
   559         113        533     105  SWITCH Peering requests: peering at switch
  1103          94       1502      83  SURFNET-NL SURFnet, The Netherlands, NL
  2614          94         27      74  ROEDUNET, RO
   137          82        677      77  ASGARR Consortium GARR, IT
  1930          65         81      60  RCCN Fundacao para a Ciencia e a Tecnol
  2200          63        598      58  FR-RENATER Reseau National de telecommu
200521          56          4      20  SEAP-AGE, ES
  1653          50        151      47  SUNET SUNET Swedish University Network,

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  1916         250        176      43  Rede Nacional de Ensino e Pesquisa, BR
 11340         105         24      49  Red Universitaria Nacional, CL
271640          68          8       1  UNIVERSIDADE FEDERAL DE VICOSA, BR
  2715          43         99      33  Fundacao Carlos Chagas Filho de Amparo 
 61468          41          3      13  CEDIA, EC
  1251          33         32      25  FUNDACAO DE AMPARO A PESQUISA DO ESTADO
263683          33         10      21  Universidad de Costa Rica, CR
 20191          27          2      23  Pontificia Universidad Catolica de Chil
 28571          19         40      18  UNIVERSIDADE DE SAO PAULO, BR
 27790          18          2       2  Universidad Nacional de Cordoba, AR

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 36914         251         82       3  KENET-AS, KE
327687         166         28       3  RENU, UG
327700          42         16       1  MoRENet, MZ
  3208          32          2       1  ARN, DZ
  6879          24          2       9  ENSTINET-, EG
 37074          11          7       7  UG-AS, GH
 37654          11          1       6  RwEdNet-AS, RW
 37182           6          8       1  TERNET, TZ
 37215           6          8       1  MAREN, MW
 31960           5          1       1  EMUNET, MZ

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2907         598       2162     466  SINET-AS Research Organization of Infor
  7497         437        180      23  CSTNET-AS-AP Computer Network Informati
   680         283       1903     249  DFN Verein zur Foerderung eines Deutsch
 36914         251         82       3  KENET-AS, KE
  1916         250        176      43  Rede Nacional de Ensino e Pesquisa, BR
   376         202        178     151  RISQ-AS, CA
  5786         197         16       1  UPRENET, PR
   786         185       1767     182  JANET Jisc Services Limited, GB
  4538         182       4193      75  ERX-CERNET-BKB China Education and Rese
  7575         177        329     120  AARNET-AS-AP Australian Academic and Re

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

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

   ASN  No of nets  Net Savings  Description
  7497         437          414  CSTNET-AS-AP Computer Network Information Cente
 36914         251          248  KENET-AS, KE
  1916         250          207  Rede Nacional de Ensino e Pesquisa, BR
  5786         197          196  UPRENET, PR
 58647         177          175  KAGAWAU-AS Kagawa University, JP
327687         166          163  RENU, UG
 18558         141          137  NETBLK-RCOEK, US
 55824         127          110  NKN-CORE-NW NKN Core Network, IN
  4538         182          107  ERX-CERNET-BKB China Education and Research Net
    81         126           96  NCREN, US

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

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

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
     11570  UNALLOCATED  192.94.216.0/24          40498  ABQG, US
     11570  UNALLOCATED  192.207.226.0/24         40498  ABQG, US
     11570  UNALLOCATED  198.59.106.0/24          40498  ABQG, US
     11570  UNALLOCATED  198.59.107.0/24          40498  ABQG, US
     11570  UNALLOCATED  198.59.108.0/24          40498  ABQG, US
     11570  UNALLOCATED  198.59.188.0/24          40498  ABQG, US
     11570  UNALLOCATED  198.59.189.0/24          40498  ABQG, US
     11570  UNALLOCATED  198.59.190.0/24          40498  ABQG, US
    394607  UNALLOCATED  216.100.93.0/24          23024  OCDE, US

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

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

Unassigned Network     ASN Information  AS Name
134.208.0.0/16       Origin:     17711  NDHU-TW National Dong Hwa University, TW
134.208.0.0/16      Transit:      7539  TWAREN-TW National Center for High-perfo
192.31.196.0/24      Origin:       112  RESERVED, ZZ
192.31.196.0/24     Transit:      1103  SURFNET-NL SURFnet, The Netherlands, NL
202.58.231.0/24      Origin:    134096  EHEALTHNSW-AS-AP eHealth NSW, AU
202.58.231.0/24     Transit:      7575  AARNET-AS-AP Australian Academic and Res

Complete listing at https://bgp.nsrc.org/REN/ASREN/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        /9:1       /10:2       /11:1       /12:10      
/13:19      /14:35      /15:109     /16:1734    /17:335     /18:347     
/19:463     /20:653     /21:642     /22:1079    /23:1160    /24:7531    
/25:45      /26:58      /27:62      /28:0       /29:0       /30:0       
/31:0       /32:0       

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

   ASN  No of nets  Total ann.  Description
 36914         240         251  KENET-AS, KE
 32440          81         111  LONI, US
 23024          52         112  OCDE, US
  1916          40         250  Rede Nacional de Ensino e Pesquisa, BR
327700          36          42  MoRENet, MZ
200521          33          56  SEAP-AGE, ES
 25977          28          42  HCCS, US
327687          26         166  RENU, UG
 26898          24          32  LNOCA-ORG, US
 36794          24          26  SCOCA, US

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

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

   1:1         5:15        8:2        12:1        14:89       23:3      
  24:3        31:3        35:4        38:4        40:1        41:116    
  42:12       44:6        45:31       46:5        49:9        58:12     
  59:9        60:5        61:2        62:6        63:3        64:27     
  65:1        66:11       67:34       68:1        69:8        70:2      
  71:1        72:7        74:17       76:41       77:8        78:3      
  79:10       80:8        81:24       82:2        83:6        84:6      
  85:12       86:1        87:1        89:10       91:36       93:4      
  94:2        95:2        96:5       101:5       102:32      103:221    
 104:72      108:8       109:1       111:16      114:1       116:6      
 118:18      119:18      121:28      122:8       123:8       124:40     
 125:1       128:68      129:31      130:84      131:57      132:60     
 133:152     134:78      136:195     137:129     138:9       139:4      
 140:30      141:3       142:39      143:15      144:23      145:2      
 146:119     147:22      148:7       149:11      150:13      151:12     
 152:124     153:7       154:6       155:48      156:65      157:12     
 158:29      159:114     160:30      161:13      162:16      163:76     
 164:12      165:9       167:10      168:51      169:8       170:15     
 172:3       173:7       175:17      177:4       179:12      180:14     
 181:1       182:1       184:2       185:39      186:3       187:1      
 188:12      189:3       190:18      191:2       192:1266    193:258    
 194:89      195:60      196:64      197:166     198:391     199:214    
 200:280     201:24      202:366     203:183     204:325     205:111    
 206:151     207:132     208:56      209:107     210:92      211:1      
 212:42      213:2       216:54      217:9       219:5       220:5      
 222:2       223:14     

End of report


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