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

REN Routing Table Report cscora at bgp.nsrc.org
Mon Jan 15 22:20:36 UTC 2024


IPv4 R&E Routing Table Report   22:20 GMT Mon 15 Jan, 2024

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

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

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

BGP routing table entries examined:                               18748
    Prefixes after maximum aggregation (per Origin AS):           10602
    Deaggregation factor:                                          1.77
    Unique aggregates announced (without unneeded subnets):       11697
    Number of IPv4 prefixes with a valid ROA:                      5806
    Number of IPv4 prefixes with an invalid ROA:                     35
    Number of IPv4 prefixes with no ROA:                          12907
Total ASes present in the Internet Routing Table:                  2731
    Prefixes per ASN:                                              6.86
Origin-only ASes present in the Internet Routing Table:            2372
Origin ASes announcing only one prefix:                            1070
Transit ASes present in the Internet Routing Table:                 359
Transit-only ASes present in the Internet Routing Table:             65
Paths with bogon ASNs present in the IPv4 Routing Table:              0
Average AS path length visible in the Internet Routing Table:       3.7
    Max AS path length visible:                                      14
    Max AS path prepend of ASN ( 47805)                              11
Prefixes from unregistered ASNs in the Routing Table:                18
    Number of instances of unregistered ASNs:                        18
Number of 32-bit ASNs allocated by the RIRs:                      43391
Number of 32-bit ASNs visible in the Routing Table:                 641
Prefixes from 32-bit ASNs in the Routing Table:                    1949
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:              0
Number of addresses announced to Internet:                    176252416
    Equivalent to 10 /8s, 129 /16s and 102 /24s
    Percentage of available address space announced:                4.8
    Percentage of allocated address space announced:                4.8
    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:        2342

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

Prefixes being announced by APNIC Region ASes:                     4234
    Total APNIC prefixes after maximum aggregation:                2151
    APNIC Deaggregation factor:                                    1.97
Prefixes being announced from the APNIC address blocks:            4235
    Unique aggregates announced from the APNIC address blocks:     2412
APNIC Region origin ASes present in the Internet Routing Table:     494
    APNIC Prefixes per ASN:                                        8.57
APNIC Region origin ASes announcing only one prefix:                220
APNIC Region transit ASes present in the Internet Routing Table:     44
Average APNIC Region AS path length visible:                        3.8
    Max APNIC Region AS path length visible:                         13
Number of APNIC region 32-bit ASNs visible in the Routing Table:    189
Number of APNIC addresses announced to Internet:               35396096
    Equivalent to 2 /8s, 28 /16s and 26 /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:                      8367
    Total ARIN prefixes after maximum aggregation:                 4901
    ARIN Deaggregation factor:                                     1.71
Prefixes being announced from the ARIN address blocks:             8397
    Unique aggregates announced from the ARIN address blocks:      5458
ARIN Region origin ASes present in the Internet Routing Table:     1301
    ARIN Prefixes per ASN:                                         6.45
ARIN Region origin ASes announcing only one prefix:                 470
ARIN Region transit ASes present in the Internet Routing Table:     164
Average ARIN Region AS path length visible:                         3.6
    Max ARIN Region AS path length visible:                          14
Number of ARIN region 32-bit ASNs visible in the Routing Table:     214
Number of ARIN addresses announced to Internet:                80082944
    Equivalent to 4 /8s, 197 /16s and 248 /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:                      3500
    Total RIPE prefixes after maximum aggregation:                 2828
    RIPE Deaggregation factor:                                     1.24
Prefixes being announced from the RIPE address blocks:             3489
    Unique aggregates announced from the RIPE address blocks:      2888
RIPE Region origin ASes present in the Internet Routing Table:      664
    RIPE Prefixes per ASN:                                         5.25
RIPE Region origin ASes announcing only one prefix:                 298
RIPE Region transit ASes present in the Internet Routing Table:      99
Average RIPE Region AS path length visible:                         3.6
    Max RIPE Region AS path length visible:                          13
Number of RIPE region 32-bit ASNs visible in the Routing Table:     147
Number of RIPE addresses announced to Internet:                54088192
    Equivalent to 3 /8s, 57 /16s and 82 /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:                    1321
    Total LACNIC prefixes after maximum aggregation:                533
    LACNIC Deaggregation factor:                                   2.48
Prefixes being announced from the LACNIC address blocks:           1319
    Unique aggregates announced from the LACNIC address blocks:     715
LACNIC Region origin ASes present in the Internet Routing Table:    158
    LACNIC Prefixes per ASN:                                       8.35
LACNIC Region origin ASes announcing only one prefix:                59
LACNIC Region transit ASes present in the Internet Routing Table:    24
Average LACNIC Region AS path length visible:                       4.5
    Max LACNIC Region AS path length visible:                        13
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    68
Number of LACNIC addresses announced to Internet:               4033792
    Equivalent to 0 /8s, 61 /16s and 141 /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:                   1308
    Total AfriNIC prefixes after maximum aggregation:               174
    AfriNIC Deaggregation factor:                                  7.52
Prefixes being announced from the AfriNIC address blocks:          1308
    Unique aggregates announced from the AfriNIC address blocks:    224
AfriNIC Region origin ASes present in the Internet Routing Table:    45
    AfriNIC Prefixes per ASN:                                     29.07
AfriNIC Region origin ASes announcing only one prefix:               23
AfriNIC Region transit ASes present in the Internet Routing Table:    8
Average AfriNIC Region AS path length visible:                      3.4
    Max AfriNIC Region AS path length visible:                        8
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   23
Number of AfriNIC addresses announced to Internet:              2651392
    Equivalent to 0 /8s, 40 /16s and 117 /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     465  SINET-AS Research Organization of Infor
  7497         437        180      23  CSTNET-AS-AP Computer Network Informati
  1237         188         74     139  KREONET-AS-KR KISTI, KR
 58647         180         18       2  KAGAWAU-AS Kagawa University, JP
  7575         176        329     119  AARNET-AS-AP Australian Academic and Re
 55824         128         19      18  NKN-CORE-NW NKN Core Network, IN
  4538         111       2368      68  ERX-CERNET-BKB China Education and Rese
  4762          75          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

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
   668         204        652     173  DNIC-AS-00668, US
   376         201        162     151  RISQ-AS, CA
  5786         197         16       1  UPRENET, PR
  2152         147        507      96  CSUNET-NW, US
 18558         141         18       4  NETBLK-RCOEK, US
    81         125        473      31  NCREN, US
   270         115        329      79  AS270, US
 23024         109          7      22  OCDE, US
  2920         103         34       7  LACOE, US
   237          89        544      55  MERIT-AS-14, US

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
   680         283       1899     249  DFN Verein zur Foerderung eines Deutsch
   786         185       1767     182  JANET Jisc Services Limited, GB
  8895         133         24       4  ISU Internet Services Unit ISU, SA
   559         114        533     104  SWITCH Peering requests: peering at switch
  1103          94       1247      82  SURFNET-NL SURFnet, The Netherlands, NL
  2614          93         27      73  ROEDUNET, RO
   137          81        676      77  ASGARR Consortium GARR, IT
  3267          79         44      68  RUNNET, RU
   553          78        462      78  BELWUE BelWue-Koordination, DE
  1930          78         88      73  RCCN Fundacao para a Ciencia e a Tecnol

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 28391         154         10      67  Universidad Juarez Autonoma de Tabasco,
  1916         149        176      42  Rede Nacional de Ensino e Pesquisa, BR
 11340         106         24      50  Red Universitaria Nacional, CL
271640          68          8       1  UNIVERSIDADE FEDERAL DE VICOSA, BR
  4270          48         16       1  Red de Interconexion Universitaria, AR
 19611          48         17       2  Associacao Antonio Vieira - Unisinos, B
 61468          43          3      14  CEDIA, EC
  2715          42         99      32  Fundacao Carlos Chagas Filho de Amparo 
 28614          38          2       2  Fundacao Universidade Regional de Blume
  1251          35         32      25  FUNDACAO DE AMPARO A PESQUISA DO ESTADO

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 36914         527         82       3  KENET-AS, KE
  2018         381        319      71  TENET-1, ZA
327687         158         28       3  RENU, UG
  8094          47         48      18  PUKNET, ZA
327700          47         16       1  MoRENet, MZ
  6879          24          2       9  ENSTINET-, EG
 37074          14          8       2  UG-AS, GH
 37501          11         49       6  UOFS, ZA
 37654          11          1       6  RwEdNet-AS, RW
 37215          10          8       1  MAREN, MW

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2907         591       2162     465  SINET-AS Research Organization of Infor
 36914         527         82       3  KENET-AS, KE
  7497         437        180      23  CSTNET-AS-AP Computer Network Informati
  2018         381        319      71  TENET-1, ZA
   680         283       1899     249  DFN Verein zur Foerderung eines Deutsch
   668         204        652     173  DNIC-AS-00668, US
   376         201        162     151  RISQ-AS, CA
  5786         197         16       1  UPRENET, PR
  1237         188         74     139  KREONET-AS-KR KISTI, KR
   786         185       1767     182  JANET Jisc Services Limited, GB

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

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

   ASN  No of nets  Net Savings  Description
 36914         527          524  KENET-AS, KE
  7497         437          414  CSTNET-AS-AP Computer Network Information Cente
  2018         381          310  TENET-1, ZA
  5786         197          196  UPRENET, PR
 58647         180          178  KAGAWAU-AS Kagawa University, JP
327687         158          155  RENU, UG
 18558         141          137  NETBLK-RCOEK, US
  8895         133          129  ISU Internet Services Unit ISU, SA
 55824         128          110  NKN-CORE-NW NKN Core Network, IN
  1916         149          107  Rede Nacional de Ensino e Pesquisa, BR

Complete listing at https://bgp.nsrc.org/REN/ESnet/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
     26303  UNALLOCATED  76.165.220.0/24          32440  LONI, US
     26303  UNALLOCATED  76.165.221.0/24          32440  LONI, US
     26303  UNALLOCATED  76.165.222.0/24          32440  LONI, US
    394607  UNALLOCATED  104.249.65.0/24          23024  OCDE, US
     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

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

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       /11:0       /12:0       
/13:0       /14:35      /15:121     /16:2017    /17:431     /18:447     
/19:571     /20:849     /21:876     /22:1491    /23:1542    /24:10368   
/25:0       /26:0       /27:0       /28:0       /29:0       /30:0       
/31:0       /32:0       

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

   ASN  No of nets  Total ann.  Description
 36914         512         527  KENET-AS, KE
  8895         128         133  ISU Internet Services Unit ISU, SA
 23024          52         109  OCDE, US
327700          41          47  MoRENet, MZ
 32440          38          62  LONI, US
  3267          36          79  RUNNET, RU
 18632          34          66  VOLCANO-VISION, US
200521          33          56  SEAP-AGE, ES
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
 46115          32          35  LUTHER, US

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

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

   1:2         5:15        6:4         8:5        12:2        14:89     
  18:44       23:9        24:3        31:7        35:7        38:10     
  40:1        41:227      42:10       44:6        45:38       46:5      
  47:1        49:7        50:8        52:1        58:1        59:3      
  60:5        61:3        62:9        63:37       64:52       65:19     
  66:54       67:45       68:20       69:17       70:2        71:1      
  72:7        74:54       76:42       77:9        78:3        79:10     
  80:12       81:25       82:7        83:7        84:8        85:43     
  86:1        87:1        89:10       91:43       92:2        93:4      
  94:4        95:2        97:3        98:2       101:2       102:34     
 103:216     104:74      107:16      108:8       109:4       114:24     
 116:6       117:61      119:18      121:11      123:8       124:40     
 125:5       128:85      129:48      130:86      131:65      132:52     
 133:155     134:109     136:196     137:135     138:57      139:5      
 140:39      141:3       142:35      143:22      144:27      145:2      
 146:133     147:59      148:194     149:12      150:40      151:14     
 152:130     153:13      154:30      155:63      156:67      157:18     
 158:32      159:115     160:34      161:16      162:30      163:71     
 164:13      165:47      166:2       167:13      168:119     169:7      
 170:102     171:1       172:3       173:7       174:1       175:17     
 177:6       179:11      180:15      181:1       182:1       184:2      
 185:52      186:3       187:17      188:14      189:3       190:17     
 191:13      192:1470    193:262     194:119     195:63      196:201    
 197:329     198:500     199:285     200:265     201:36      202:576    
 203:403     204:370     205:132     206:201     207:164     208:77     
 209:122     210:182     211:13      212:161     213:5       214:8      
 216:93      217:9       218:22      219:5       220:15      222:2      
 223:4      

End of report


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