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

REN Routing Table Report cscora at bgp.nsrc.org
Thu Sep 21 22:20:37 UTC 2023


IPv4 R&E Routing Table Report   22:20 GMT Thu 21 Sep, 2023

  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:                               18763
    Prefixes after maximum aggregation (per Origin AS):           10768
    Deaggregation factor:                                          1.74
    Unique aggregates announced (without unneeded subnets):       11944
    Number of IPv4 prefixes with a valid ROA:                      5183
    Number of IPv4 prefixes with an invalid ROA:                     35
    Number of IPv4 prefixes with no ROA:                          13545
Total ASes present in the Internet Routing Table:                  2764
    Prefixes per ASN:                                              6.79
Origin-only ASes present in the Internet Routing Table:            2389
Origin ASes announcing only one prefix:                            1052
Transit ASes present in the Internet Routing Table:                 375
Transit-only ASes present in the Internet Routing Table:             72
Paths with bogon ASNs present in the IPv4 Routing Table:              0
Average AS path length visible in the Internet Routing Table:       3.8
    Max AS path length visible:                                      15
    Max AS path prepend of ASN (395156)                              12
Prefixes from unregistered ASNs in the Routing Table:                 3
    Number of instances of unregistered ASNs:                         3
Number of 32-bit ASNs allocated by the RIRs:                      42652
Number of 32-bit ASNs visible in the Routing Table:                 631
Prefixes from 32-bit ASNs in the Routing Table:                    1920
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:              2
Number of addresses announced to Internet:                    176273152
    Equivalent to 10 /8s, 129 /16s and 183 /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:               99.5
Total number of prefixes smaller than registry allocations:        2090

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

Prefixes being announced by APNIC Region ASes:                     4522
    Total APNIC prefixes after maximum aggregation:                2231
    APNIC Deaggregation factor:                                    2.03
Prefixes being announced from the APNIC address blocks:            4529
    Unique aggregates announced from the APNIC address blocks:     2594
APNIC Region origin ASes present in the Internet Routing Table:     525
    APNIC Prefixes per ASN:                                        8.63
APNIC Region origin ASes announcing only one prefix:                219
APNIC Region transit ASes present in the Internet Routing Table:     56
Average APNIC Region AS path length visible:                        3.9
    Max APNIC Region AS path length visible:                         14
Number of APNIC region 32-bit ASNs visible in the Routing Table:    199
Number of APNIC addresses announced to Internet:               35822336
    Equivalent to 2 /8s, 34 /16s and 155 /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:                      8259
    Total ARIN prefixes after maximum aggregation:                 4995
    ARIN Deaggregation factor:                                     1.65
Prefixes being announced from the ARIN address blocks:             8254
    Unique aggregates announced from the ARIN address blocks:      5537
ARIN Region origin ASes present in the Internet Routing Table:     1284
    ARIN Prefixes per ASN:                                         6.43
ARIN Region origin ASes announcing only one prefix:                 456
ARIN Region transit ASes present in the Internet Routing Table:     162
Average ARIN Region AS path length visible:                         3.6
    Max ARIN Region AS path length visible:                          15
Number of ARIN region 32-bit ASNs visible in the Routing Table:     206
Number of ARIN addresses announced to Internet:                79283200
    Equivalent to 4 /8s, 185 /16s and 196 /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:                      3524
    Total RIPE prefixes after maximum aggregation:                 2828
    RIPE Deaggregation factor:                                     1.25
Prefixes being announced from the RIPE address blocks:             3526
    Unique aggregates announced from the RIPE address blocks:      2880
RIPE Region origin ASes present in the Internet Routing Table:      677
    RIPE Prefixes per ASN:                                         5.21
RIPE Region origin ASes announcing only one prefix:                 296
RIPE Region transit ASes present in the Internet Routing Table:     105
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:     140
Number of RIPE addresses announced to Internet:                54406400
    Equivalent to 3 /8s, 62 /16s and 45 /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:                    1421
    Total LACNIC prefixes after maximum aggregation:                548
    LACNIC Deaggregation factor:                                   2.59
Prefixes being announced from the LACNIC address blocks:           1418
    Unique aggregates announced from the LACNIC address blocks:     737
LACNIC Region origin ASes present in the Internet Routing Table:    157
    LACNIC Prefixes per ASN:                                       9.03
LACNIC Region origin ASes announcing only one prefix:                55
LACNIC Region transit ASes present in the Internet Routing Table:    25
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        13
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    61
Number of LACNIC addresses announced to Internet:               4115456
    Equivalent to 0 /8s, 62 /16s and 204 /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:                   1034
    Total AfriNIC prefixes after maximum aggregation:               163
    AfriNIC Deaggregation factor:                                  6.34
Prefixes being announced from the AfriNIC address blocks:          1034
    Unique aggregates announced from the AfriNIC address blocks:    194
AfriNIC Region origin ASes present in the Internet Routing Table:    47
    AfriNIC Prefixes per ASN:                                     22.00
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:                      3.3
    Max AfriNIC Region AS path length visible:                        9
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   25
Number of AfriNIC addresses announced to Internet:              2579968
    Equivalent to 0 /8s, 39 /16s and 94 /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         594       2163     466  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         177         18       2  KAGAWAU-AS Kagawa University, JP
  7575         176        329     120  AARNET-AS-AP Australian Academic and Re
 55824         127         19      17  NKN-CORE-NW NKN Core Network, IN
  4538         112       2368      69  ERX-CERNET-BKB China Education and Rese
  4621          69         37      10  UNINET-AS-AP UNINET-, TH
  9411          66         16       2  NONTRINET-AS-AP Kasetsart University, T
  4762          63          4       1  MAHIDOL-BORDER-AS Mahidol 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        651     172  DNIC-AS-00668, US
   376         201        178     150  RISQ-AS, CA
  5786         197         16       1  UPRENET, PR
  2152         142        507      94  CSUNET-NW, US
 18558         141         18       4  NETBLK-RCOEK, US
    81         126        473      31  NCREN, US
   270         115        329      84  AS270, US
 23024         113          7      17  OCDE, US
  2920         104         34       7  LACOE, US
 21976          82         51      18  NJEDGE-NET, 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       1903     249  DFN Verein zur Foerderung eines Deutsch
   786         185       1767     182  JANET Jisc Services Limited, GB
  8895         136         24       4  ISU Internet Services Unit ISU, SA
   559         113        533     105  SWITCH Peering requests: peering at switch
  2614          94         27      74  ROEDUNET, RO
  1103          93       1246      82  SURFNET-NL SURFnet, The Netherlands, NL
   137          82        677      77  ASGARR Consortium GARR, IT
   553          74        465      74  BELWUE BelWue-Koordination, DE
  1930          65         81      60  RCCN Fundacao para a Ciencia e a Tecnol
  2200          64        599      59  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
  1916         213        176      42  Rede Nacional de Ensino e Pesquisa, BR
 28391         152         10      66  Universidad Juarez Autonoma de Tabasco,
 11340         104         24      48  Red Universitaria Nacional, CL
271640          72          8       1  UNIVERSIDADE FEDERAL DE VICOSA, BR
  2715          58        102      38  Fundacao Carlos Chagas Filho de Amparo 
  4270          48         16       1  Red de Interconexion Universitaria, AR
 19611          48         17       2  Associacao Antonio Vieira - Unisinos, B
 61468          43          3      14  CEDIA, EC
 28614          38          2       2  Fundacao Universidade Regional de Blume
  3596          34          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         382        319      71  TENET-1, ZA
 36914         255         82       3  KENET-AS, KE
327687         166         28       3  RENU, UG
  8094          47         48      18  PUKNET, ZA
327700          42         16       1  MoRENet, MZ
  3208          32          2       1  ARN, DZ
 37074          14          8       2  UG-AS, GH
 37501          11         49       6  UOFS, ZA
 37654          10          1       6  RwEdNet-AS, RW
 36982           8         33       8  UCT, ZA

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         594       2163     466  SINET-AS Research Organization of Infor
  7497         437        180      23  CSTNET-AS-AP Computer Network Informati
  2018         382        319      71  TENET-1, ZA
   680         283       1903     249  DFN Verein zur Foerderung eines Deutsch
 36914         255         82       3  KENET-AS, KE
  1916         213        176      42  Rede Nacional de Ensino e Pesquisa, BR
   668         203        651     172  DNIC-AS-00668, US
   376         201        178     150  RISQ-AS, CA
  5786         197         16       1  UPRENET, PR
  1237         188         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         437          414  CSTNET-AS-AP Computer Network Information Cente
  2018         382          311  TENET-1, ZA
 36914         255          252  KENET-AS, KE
  5786         197          196  UPRENET, PR
 58647         177          175  KAGAWAU-AS Kagawa University, JP
  1916         213          171  Rede Nacional de Ensino e Pesquisa, BR
327687         166          163  RENU, UG
 18558         141          137  NETBLK-RCOEK, US
  8895         136          132  ISU Internet Services Unit ISU, SA
 55824         127          110  NKN-CORE-NW NKN Core Network, IN

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
    394607  UNALLOCATED  104.249.65.0/24          23024  OCDE, US
     33008  UNALLOCATED  162.248.66.0/24          11096  FLORIDANET, US
    394607  UNALLOCATED  216.100.93.0/24          23024  OCDE, US

Complete listing at https://bgp.nsrc.org/REN/ESnet/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
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/ESnet/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       /11:0       /12:0       
/13:0       /14:35      /15:122     /16:2017    /17:401     /18:399     
/19:562     /20:875     /21:857     /22:1491    /23:1559    /24:10445   
/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         244         255  KENET-AS, KE
  8895         131         136  ISU Internet Services Unit ISU, SA
 23024          52         113  OCDE, US
 32440          37          59  LONI, US
327700          36          42  MoRENet, MZ
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
 46115          32          35  LUTHER, US
200521          31          54  SEAP-AGE, ES
 25977          30          44  HCCS, US
 27609          29          45  USC-UNIVERSITY-HOSPITAL, US

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

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

   1:3         5:18        6:4         8:5        12:1        14:89     
  18:43       23:12       24:3        31:7        35:4        38:11     
  40:1        41:117      42:10       44:6        45:45       46:5      
  47:1        49:9        50:9        52:1        58:1        59:19     
  60:5        61:3        62:9        63:37       64:55       65:13     
  66:56       67:46       68:19       69:20       70:2        71:1      
  72:8        74:47       76:41       77:9        78:3        79:10     
  80:12       81:27       82:6        83:6        84:8        85:41     
  86:7        87:1        89:10       91:43       92:2        93:4      
  94:4        95:1        96:5        97:3        98:2       101:2      
 102:29      103:255     104:77      108:10      109:6       111:16     
 114:23      116:6       117:61      118:32      119:18      121:27     
 122:8       123:8       124:40      125:4       128:87      129:48     
 130:94      131:64      132:60      133:152     134:107     136:196    
 137:130     138:9       139:5       140:42      141:1       142:39     
 143:19      144:28      145:3       146:131     147:64      148:193    
 149:12      150:44      151:19      152:146     153:14      154:31     
 155:63      156:64      157:18      158:36      159:116     160:33     
 161:26      162:33      163:72      164:10      165:46      166:3      
 167:10      168:123     169:8       170:89      171:1       172:5      
 173:7       174:1       175:27      177:5       179:8       180:15     
 182:1       184:6       185:49      186:3       187:19      188:13     
 189:3       190:19      191:13      192:1485    193:291     194:126    
 195:53      196:199     197:167     198:519     199:291     200:330    
 201:39      202:615     203:426     204:372     205:130     206:195    
 207:176     208:76      209:123     210:184     211:13      212:168    
 213:5       214:8       216:100     217:10      218:22      219:5      
 220:16      222:2       223:4      

End of report


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