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

REN Routing Table Report cscora at bgp.nsrc.org
Thu Mar 21 22:20:37 UTC 2024


IPv4 R&E Routing Table Report   22:20 GMT Thu 21 Mar, 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:                               18198
    Prefixes after maximum aggregation (per Origin AS):           10525
    Deaggregation factor:                                          1.73
    Unique aggregates announced (without unneeded subnets):       11635
    Number of IPv4 prefixes with a valid ROA:                      5417
    Number of IPv4 prefixes with an invalid ROA:                     42
    Number of IPv4 prefixes with no ROA:                          12739
Total ASes present in the Internet Routing Table:                  2705
    Prefixes per ASN:                                              6.73
Origin-only ASes present in the Internet Routing Table:            2351
Origin ASes announcing only one prefix:                            1058
Transit ASes present in the Internet Routing Table:                 354
Transit-only ASes present in the Internet Routing Table:             63
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:                                      18
    Max AS path prepend of ASN ( 47805)                              11
Prefixes from unregistered ASNs in the Routing Table:                13
    Number of instances of unregistered ASNs:                        13
Number of 32-bit ASNs allocated by the RIRs:                      43881
Number of 32-bit ASNs visible in the Routing Table:                 631
Prefixes from 32-bit ASNs in the Routing Table:                    1918
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:                    176269568
    Equivalent to 10 /8s, 129 /16s and 169 /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:        1996

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

Prefixes being announced by APNIC Region ASes:                     4257
    Total APNIC prefixes after maximum aggregation:                2145
    APNIC Deaggregation factor:                                    1.98
Prefixes being announced from the APNIC address blocks:            4258
    Unique aggregates announced from the APNIC address blocks:     2412
APNIC Region origin ASes present in the Internet Routing Table:     493
    APNIC Prefixes per ASN:                                        8.64
APNIC Region origin ASes announcing only one prefix:                215
APNIC Region transit ASes present in the Internet Routing Table:     44
Average APNIC Region AS path length visible:                        3.9
    Max APNIC Region AS path length visible:                         12
Number of APNIC region 32-bit ASNs visible in the Routing Table:    184
Number of APNIC addresses announced to Internet:               35465984
    Equivalent to 2 /8s, 29 /16s and 43 /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:                      8376
    Total ARIN prefixes after maximum aggregation:                 4916
    ARIN Deaggregation factor:                                     1.70
Prefixes being announced from the ARIN address blocks:             8398
    Unique aggregates announced from the ARIN address blocks:      5470
ARIN Region origin ASes present in the Internet Routing Table:     1307
    ARIN Prefixes per ASN:                                         6.43
ARIN Region origin ASes announcing only one prefix:                 468
ARIN Region transit ASes present in the Internet Routing Table:     167
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:     216
Number of ARIN addresses announced to Internet:                80166912
    Equivalent to 4 /8s, 199 /16s and 64 /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:                      3496
    Total RIPE prefixes after maximum aggregation:                 2818
    RIPE Deaggregation factor:                                     1.24
Prefixes being announced from the RIPE address blocks:             3487
    Unique aggregates announced from the RIPE address blocks:      2873
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:                 299
RIPE Region transit ASes present in the Internet Routing Table:      96
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:     148
Number of RIPE addresses announced to Internet:                54017280
    Equivalent to 3 /8s, 56 /16s and 61 /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:                    1073
    Total LACNIC prefixes after maximum aggregation:                460
    LACNIC Deaggregation factor:                                   2.33
Prefixes being announced from the LACNIC address blocks:           1072
    Unique aggregates announced from the LACNIC address blocks:     654
LACNIC Region origin ASes present in the Internet Routing Table:    125
    LACNIC Prefixes per ASN:                                       8.58
LACNIC Region origin ASes announcing only one prefix:                50
LACNIC Region transit ASes present in the Internet Routing Table:    21
Average LACNIC Region AS path length visible:                       4.6
    Max LACNIC Region AS path length visible:                        13
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    54
Number of LACNIC addresses announced to Internet:               3954176
    Equivalent to 0 /8s, 60 /16s and 86 /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:                    983
    Total AfriNIC prefixes after maximum aggregation:               175
    AfriNIC Deaggregation factor:                                  5.62
Prefixes being announced from the AfriNIC address blocks:           983
    Unique aggregates announced from the AfriNIC address blocks:    226
AfriNIC Region origin ASes present in the Internet Routing Table:    50
    AfriNIC Prefixes per ASN:                                     19.66
AfriNIC Region origin ASes announcing only one prefix:               26
AfriNIC Region transit ASes present in the Internet Routing Table:    9
Average AfriNIC Region AS path length visible:                      3.7
    Max AfriNIC Region AS path length visible:                       18
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   29
Number of AfriNIC addresses announced to Internet:              2665216
    Equivalent to 0 /8s, 40 /16s and 171 /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         441        180      23  CSTNET-AS-AP Computer Network Informati
  1237         187         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          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

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         198         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         114        328      78  AS270, US
 23024         108          7      21  OCDE, US
  2920         102         34       7  LACOE, 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
  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
  1930          79         88      74  RCCN Fundacao para a Ciencia e a Tecnol
   553          78        462      78  BELWUE BelWue-Koordination, DE
  3267          77         44      68  RUNNET, RU

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,
 11340         108         25      51  Red Universitaria Nacional, CL
  1916          82        176      42  Rede Nacional de Ensino e Pesquisa, BR
271640          67          8       1  UNIVERSIDADE FEDERAL DE VICOSA, BR
 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
  3596          35          4       3  Universidad Autonoma Metropolitana, MX

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         378        319      71  TENET-1, ZA
 36914         206         82       3  KENET-AS, KE
327687         162         28       3  RENU, UG
  8094          47         48      18  PUKNET, ZA
327700          43         16       1  MoRENet, MZ
  6879          24          2       9  ENSTINET-, EG
 37074          13          8       2  UG-AS, GH
 37501          11         49       6  UOFS, ZA
 37654          11          1       6  RwEdNet-AS, RW
 37215           9          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         590       2162     464  SINET-AS Research Organization of Infor
  7497         441        180      23  CSTNET-AS-AP Computer Network Informati
  2018         378        319      71  TENET-1, ZA
   680         284       1899     250  DFN Verein zur Foerderung eines Deutsch
 36914         206         82       3  KENET-AS, KE
   668         203        648     172  DNIC-AS-00668, US
   376         201        162     151  RISQ-AS, CA
  5786         198         16       1  UPRENET, PR
  1237         187         74     139  KREONET-AS-KR KISTI, KR
   786         186       1767     183  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
  7497         441          418  CSTNET-AS-AP Computer Network Information Cente
  2018         378          307  TENET-1, ZA
 36914         206          203  KENET-AS, KE
  5786         198          197  UPRENET, PR
 58647         182          180  KAGAWAU-AS Kagawa University, JP
327687         162          159  RENU, UG
 18558         141          137  NETBLK-RCOEK, US
  8895         133          129  ISU Internet Services Unit ISU, SA
 55824         131          112  NKN-CORE-NW NKN Core Network, IN
  2920         102           95  LACOE, 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
     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
     11570  UNALLOCATED  204.134.85.0/24          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     /16:2019    /17:428     /18:446     
/19:569     /20:856     /21:860     /22:1476    /23:1542    /24:9846    
/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         193         206  KENET-AS, KE
  8895         128         133  ISU Internet Services Unit ISU, SA
 23024          51         108  OCDE, US
 32440          38          62  LONI, US
327700          38          43  MoRENet, MZ
  3267          35          77  RUNNET, RU
 18632          33          65  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        14:91     
  18:44       23:9        24:3        31:1        35:8        38:11     
  40:1        41:120      42:10       44:4        45:36       46:5      
  47:1        49:7        50:5        52:1        59:3        60:6      
  61:3        62:8        63:37       64:44       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     
  81:26       82:5        83:7        84:8        85:43       86:1      
  87:1        89:10       91:44       92:2        93:4        94:2      
  95:2        97:3        98:2       101:2       102:38      103:212    
 104:76      107:16      108:8       109:4       114:24      116:6      
 117:61      118:1       119:19      121:11      123:8       124:42     
 125:5       128:85      129:44      130:86      131:62      132:59     
 133:156     134:110     136:197     137:137     138:57      139:5      
 140:34      141:3       142:35      143:24      144:28      145:2      
 146:135     147:59      148:195     149:11      150:40      151:12     
 152:131     153:13      154:28      155:63      156:67      157:18     
 158:35      159:115     160:34      161:16      162:30      163:68     
 164:13      165:47      166:2       167:5       168:104     169:6      
 170:35      171:1       172:3       173:7       174:1       175:17     
 177:5       179:11      180:15      181:1       182:1       184:2      
 185:50      186:3       187:17      188:13      189:3       190:17     
 191:13      192:1494    193:260     194:124     195:64      196:201    
 197:120     198:483     199:288     200:162     201:36      202:578    
 203:390     204:376     205:133     206:192     207:164     208:76     
 209:121     210:186     211:14      212:169     213:4       214:8      
 216:94      217:10      218:22      219:5       220:17      222:2      
 223:4      

End of report


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