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

REN Routing Table Report cscora at bgp.nsrc.org
Wed Apr 17 22:20:37 UTC 2024


IPv4 R&E Routing Table Report   22:20 GMT Wed 17 Apr, 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:                               18069
    Prefixes after maximum aggregation (per Origin AS):           10475
    Deaggregation factor:                                          1.72
    Unique aggregates announced (without unneeded subnets):       11589
    Number of IPv4 prefixes with a valid ROA:                      5288
    Number of IPv4 prefixes with an invalid ROA:                     17
    Number of IPv4 prefixes with no ROA:                          12764
Total ASes present in the Internet Routing Table:                  2700
    Prefixes per ASN:                                              6.69
Origin-only ASes present in the Internet Routing Table:            2346
Origin ASes announcing only one prefix:                            1046
Transit ASes present in the Internet Routing Table:                 354
Transit-only ASes present in the Internet Routing Table:             61
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:                                      20
    Max AS path prepend of ASN ( 29614)                              11
Prefixes from unregistered ASNs in the Routing Table:                16
    Number of instances of unregistered ASNs:                        16
Number of 32-bit ASNs allocated by the RIRs:                      44166
Number of 32-bit ASNs visible in the Routing Table:                 627
Prefixes from 32-bit ASNs in the Routing Table:                    1726
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:                    175895040
    Equivalent to 10 /8s, 123 /16s and 242 /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:        1781

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

Prefixes being announced by APNIC Region ASes:                     4244
    Total APNIC prefixes after maximum aggregation:                2153
    APNIC Deaggregation factor:                                    1.97
Prefixes being announced from the APNIC address blocks:            4245
    Unique aggregates announced from the APNIC address blocks:     2419
APNIC Region origin ASes present in the Internet Routing Table:     498
    APNIC Prefixes per ASN:                                        8.52
APNIC Region origin ASes announcing only one prefix:                219
APNIC Region transit ASes present in the Internet Routing Table:     46
Average APNIC Region AS path length visible:                        3.8
    Max APNIC Region AS path length visible:                         12
Number of APNIC region 32-bit ASNs visible in the Routing Table:    187
Number of APNIC addresses announced to Internet:               35468800
    Equivalent to 2 /8s, 29 /16s and 54 /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:                      8383
    Total ARIN prefixes after maximum aggregation:                 4863
    ARIN Deaggregation factor:                                     1.72
Prefixes being announced from the ARIN address blocks:             8408
    Unique aggregates announced from the ARIN address blocks:      5411
ARIN Region origin ASes present in the Internet Routing Table:     1293
    ARIN Prefixes per ASN:                                         6.50
ARIN Region origin ASes announcing only one prefix:                 457
ARIN Region transit ASes present in the Internet Routing Table:     160
Average ARIN Region AS path length visible:                         3.5
    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:                79968512
    Equivalent to 4 /8s, 196 /16s and 57 /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, 393216-402332
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:                      3311
    Total RIPE prefixes after maximum aggregation:                 2775
    RIPE Deaggregation factor:                                     1.19
Prefixes being announced from the RIPE address blocks:             3302
    Unique aggregates announced from the RIPE address blocks:      2857
RIPE Region origin ASes present in the Internet Routing Table:      656
    RIPE Prefixes per ASN:                                         5.03
RIPE Region origin ASes announcing only one prefix:                 298
RIPE Region transit ASes present in the Internet Routing Table:      97
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:     149
Number of RIPE addresses announced to Internet:                53793536
    Equivalent to 3 /8s, 52 /16s and 211 /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:                    1334
    Total LACNIC prefixes after maximum aggregation:                518
    LACNIC Deaggregation factor:                                   2.58
Prefixes being announced from the LACNIC address blocks:           1333
    Unique aggregates announced from the LACNIC address blocks:     702
LACNIC Region origin ASes present in the Internet Routing Table:    154
    LACNIC Prefixes per ASN:                                       8.66
LACNIC Region origin ASes announcing only one prefix:                54
LACNIC Region transit ASes present in the Internet Routing Table:    23
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:    63
Number of LACNIC addresses announced to Internet:               4220928
    Equivalent to 0 /8s, 64 /16s and 104 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-274844 + 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:                    781
    Total AfriNIC prefixes after maximum aggregation:               152
    AfriNIC Deaggregation factor:                                  5.14
Prefixes being announced from the AfriNIC address blocks:           781
    Unique aggregates announced from the AfriNIC address blocks:    200
AfriNIC Region origin ASes present in the Internet Routing Table:    34
    AfriNIC Prefixes per ASN:                                     22.97
AfriNIC Region origin ASes announcing only one prefix:               18
AfriNIC Region transit ASes present in the Internet Routing Table:    9
Average AfriNIC Region AS path length visible:                      3.0
    Max AfriNIC Region AS path length visible:                       20
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   14
Number of AfriNIC addresses announced to Internet:              2443264
    Equivalent to 0 /8s, 37 /16s and 72 /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         590       2162     464  SINET-AS Research Organization of Infor
  7497         442        180      24  CSTNET-AS-AP Computer Network Informati
  1237         184         74     139  KREONET-AS-KR KISTI, KR
 58647         182         18       2  KAGAWAU-AS Kagawa University, JP
  7575         172        329     115  AARNET-AS-AP Australian Academic and Re
 55824         131         19      19  NKN-CORE-NW NKN Core Network, IN
  4538         111       2384      69  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         203        648     172  DNIC-AS-00668, US
   376         201        162     151  RISQ-AS, CA
  5786         197         16       1  UPRENET, PR
  2920         174         34       7  LACOE, US
   270         159        345      85  AS270, US
  2152         151        507      96  CSUNET-NW, US
 18558         140         18       4  NETBLK-RCOEK, US
    81         126        473      31  NCREN, US
 23024         108          7      22  OCDE, US
   237          90        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         284       1899     250  DFN Verein zur Foerderung eines Deutsch
   786         186       1767     183  JANET Jisc Services Limited, GB
   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          82        677      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
  3267          77         27      65  RUNNET, RU
  2200          63        598      58  FR-RENATER Reseau National de telecommu

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         152         10      66  Universidad Juarez Autonoma de Tabasco,
  1916         141        176      42  Rede Nacional de Ensino e Pesquisa, BR
 11340         108         25      51  Red Universitaria Nacional, CL
271640          67          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
  2715          43         99      32  Fundacao Carlos Chagas Filho de Amparo 
 61468          43          3      14  CEDIA, EC
 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
  2018         380        319      71  TENET-1, ZA
 36914         204         82       3  KENET-AS, KE
  8094          47         48      18  PUKNET, ZA
327700          46         16       1  MoRENet, MZ
  6879          24          2       9  ENSTINET-, EG
 37501          11         49       6  UOFS, ZA
 37654          11          1       6  RwEdNet-AS, RW
 37215           9          8       1  MAREN, MW
 36982           8         33       8  UCT, ZA
 31960           5          1       1  EMUNET, MZ

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         590       2162     464  SINET-AS Research Organization of Infor
  7497         442        180      24  CSTNET-AS-AP Computer Network Informati
  2018         380        319      71  TENET-1, ZA
   680         284       1899     250  DFN Verein zur Foerderung eines Deutsch
 36914         204         82       3  KENET-AS, KE
   668         203        648     172  DNIC-AS-00668, US
   376         201        162     151  RISQ-AS, CA
  5786         197         16       1  UPRENET, PR
   786         186       1767     183  JANET Jisc Services Limited, GB
  1237         184         74     139  KREONET-AS-KR KISTI, KR

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

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

   ASN  No of nets  Net Savings  Description
  7497         442          418  CSTNET-AS-AP Computer Network Information Cente
  2018         380          309  TENET-1, ZA
 36914         204          201  KENET-AS, KE
  5786         197          196  UPRENET, PR
 58647         182          180  KAGAWAU-AS Kagawa University, JP
  2920         174          167  LACOE, US
 18558         140          136  NETBLK-RCOEK, US
 55824         131          112  NKN-CORE-NW NKN Core Network, IN
  1916         141           99  Rede Nacional de Ensino e Pesquisa, BR
    81         126           95  NCREN, US

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
    394607  UNALLOCATED  104.249.65.0/24          23024  OCDE, US
     18838  UNALLOCATED  168.8.240.0/20            3480  PEACHNET-AS3480, US
     18838  UNALLOCATED  168.9.0.0/20              3480  PEACHNET-AS3480, 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
     11570  UNALLOCATED  198.59.188.0/24          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     /16:2024    /17:422     /18:445     
/19:568     /20:861     /21:877     /22:1470    /23:1515    /24:9731    
/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         191         204  KENET-AS, KE
 23024          51         108  OCDE, US
327700          40          46  MoRENet, MZ
 32440          38          63  LONI, US
  3267          36          77  RUNNET, RU
 18632          33          66  VOLCANO-VISION, US
200521          33          54  SEAP-AGE, ES
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
 46115          32          35  LUTHER, US
 25977          30          44  HCCS, 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        14:91     
  18:43       23:9        24:3        31:1        35:8        38:11     
  40:1        41:119      42:10       44:4        45:34       46:5      
  47:1        49:7        50:6        52:1        59:3        60:6      
  61:3        62:8        63:37       64:43       65:5        66:56     
  67:44       68:21       69:17       70:2        71:1        72:7      
  74:53       76:42       77:11       78:3        79:10       80:12     
  81:25       82:7        83:7        84:8        85:28       86:2      
  87:1        89:10       91:39       92:2        93:4        94:2      
  95:2        97:3        98:2       101:2       102:5       103:213    
 104:78      107:16      108:8       109:2       114:24      116:6      
 117:61      118:1       119:19      121:11      123:8       124:42     
 125:5       128:84      129:38      130:86      131:62      132:66     
 133:156     134:110     136:196     137:50      138:57      139:5      
 140:38      141:3       142:21      143:24      144:28      145:2      
 146:135     147:33      148:193     149:11      150:39      151:12     
 152:131     153:13      154:30      155:63      156:139     157:18     
 158:35      159:115     160:34      161:15      162:30      163:64     
 164:13      165:49      166:2       167:9       168:120     169:6      
 170:106     171:1       172:3       173:7       174:1       175:17     
 177:6       179:12      180:15      182:1       184:2       185:48     
 186:3       187:18      188:13      189:3       190:17      191:13     
 192:1493    193:259     194:123     195:64      196:153     197:118    
 198:481     199:283     200:251     201:36      202:582     203:399    
 204:377     205:135     206:192     207:161     208:76      209:122    
 210:176     211:13      212:42      213:5       214:8       216:92     
 217:10      218:22      219:5       220:17      222:2       223:4      


End of report


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