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

REN Routing Table Report cscora at frr.nsrc.org
Sun Jan 2 22:20:27 UTC 2022


IPv4 R&E Routing Table Report   22:20 GMT Sun 02 Jan, 2022

  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:                               19575
    Prefixes after maximum aggregation (per Origin AS):           11460
    Deaggregation factor:                                          1.71
    Unique aggregates announced (without unneeded subnets):       12918
Total ASes present in the Internet Routing Table:                  2880
    Prefixes per ASN:                                              6.80
Origin-only ASes present in the Internet Routing Table:            2485
Origin ASes announcing only one prefix:                            1133
Transit ASes present in the Internet Routing Table:                 395
Transit-only ASes present in the Internet Routing Table:             58
Average AS path length visible in the Internet Routing Table:       3.8
    Max AS path length visible:                                      18
    Max AS path prepend of ASN ( 53263)                              11
Prefixes from unregistered ASNs in the Routing Table:                20
    Number of instances of unregistered ASNs:                        20
Number of 32-bit ASNs allocated by the RIRs:                      38223
Number of 32-bit ASNs visible in the Routing Table:                 601
Prefixes from 32-bit ASNs in the Routing Table:                    1718
Number of bogon 32-bit ASNs visible in the Routing Table:             0
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:              2
Number of addresses announced to Internet:                    180330240
    Equivalent to 10 /8s, 191 /16s and 159 /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:               99.5
Total number of prefixes smaller than registry allocations:        2429

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

Prefixes being announced by APNIC Region ASes:                     4274
    Total APNIC prefixes after maximum aggregation:                2195
    APNIC Deaggregation factor:                                    1.95
Prefixes being announced from the APNIC address blocks:            4260
    Unique aggregates announced from the APNIC address blocks:     2442
APNIC Region origin ASes present in the Internet Routing Table:     494
    APNIC Prefixes per ASN:                                        8.62
APNIC Region origin ASes announcing only one prefix:                207
APNIC Region transit ASes present in the Internet Routing Table:     55
Average APNIC Region AS path length visible:                        4.0
    Max APNIC Region AS path length visible:                         14
Number of APNIC region 32-bit ASNs visible in the Routing Table:    180
Number of APNIC addresses announced to Internet:               35968768
    Equivalent to 2 /8s, 36 /16s and 215 /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, 131072-151865
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:                      9937
    Total ARIN prefixes after maximum aggregation:                 5875
    ARIN Deaggregation factor:                                     1.69
Prefixes being announced from the ARIN address blocks:             9904
    Unique aggregates announced from the ARIN address blocks:      6703
ARIN Region origin ASes present in the Internet Routing Table:     1489
    ARIN Prefixes per ASN:                                         6.65
ARIN Region origin ASes announcing only one prefix:                 543
ARIN Region transit ASes present in the Internet Routing Table:     201
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          18
Number of ARIN region 32-bit ASNs visible in the Routing Table:     213
Number of ARIN addresses announced to Internet:                83467008
    Equivalent to 4 /8s, 249 /16s and 155 /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:                      3135
    Total RIPE prefixes after maximum aggregation:                 2680
    RIPE Deaggregation factor:                                     1.17
Prefixes being announced from the RIPE address blocks:             3201
    Unique aggregates announced from the RIPE address blocks:      2788
RIPE Region origin ASes present in the Internet Routing Table:      644
    RIPE Prefixes per ASN:                                         4.97
RIPE Region origin ASes announcing only one prefix:                 311
RIPE Region transit ASes present in the Internet Routing Table:      95
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:     132
Number of RIPE addresses announced to Internet:                54356736
    Equivalent to 3 /8s, 61 /16s and 107 /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
                       196608-213403
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:                    1437
    Total LACNIC prefixes after maximum aggregation:                571
    LACNIC Deaggregation factor:                                   2.52
Prefixes being announced from the LACNIC address blocks:           1436
    Unique aggregates announced from the LACNIC address blocks:     790
LACNIC Region origin ASes present in the Internet Routing Table:    169
    LACNIC Prefixes per ASN:                                       8.50
LACNIC Region origin ASes announcing only one prefix:                67
LACNIC Region transit ASes present in the Internet Routing Table:    23
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        12
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    70
Number of LACNIC addresses announced to Internet:               4051712
    Equivalent to 0 /8s, 61 /16s and 211 /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:                    772
    Total AfriNIC prefixes after maximum aggregation:               130
    AfriNIC Deaggregation factor:                                  5.94
Prefixes being announced from the AfriNIC address blocks:           772
    Unique aggregates announced from the AfriNIC address blocks:    193
AfriNIC Region origin ASes present in the Internet Routing Table:    23
    AfriNIC Prefixes per ASN:                                     33.57
AfriNIC Region origin ASes announcing only one prefix:                5
AfriNIC Region transit ASes present in the Internet Routing Table:    6
Average AfriNIC Region AS path length visible:                      3.0
    Max AfriNIC Region AS path length visible:                        5
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    6
Number of AfriNIC addresses announced to Internet:              2485504
    Equivalent to 0 /8s, 37 /16s and 237 /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         610       2156     457  SINET-AS Research Organization of Infor
  7497         433        182      24  CSTNET-AS-AP Computer Network Informati
  1237         185         74     135  KREONET-AS-KR KISTI, KR
  7575         177        330     123  AARNET-AS-AP Australian Academic and Re
 58647         165         18       2  KAGAWAU-AS Kagawa University, JP
 55824         113         18      11  NKN-CORE-NW NKN Core Network, IN
  4538         110       2368      69  ERX-CERNET-BKB China Education and Rese
  4621          80         37      10  UNINET-AS-AP UNINET-, TH
  4762          65          4       1  MAHIDOL-BORDER-AS Mahidol University, T
 23570          59          5      11  INCHEON-AS-KR UNIVERSITY OF INCHEON, KR

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
  7896         251         51       7  NU-AS, US
   668         212        718     176  DNIC-AS-00668, US
   376         203        178     152  RISQ-AS, CA
  5786         200         16       1  UPRENET, PR
  2152         147        507      89  CSUNET-NW, US
 18558         135         18       4  NETBLK-RCOEK, US
   270         119        329      88  AS270, US
 23024         114          7      17  OCDE, US
  2920         108         34       6  LACOE, US
 11404          86        174      71  AS-WAVE-1, 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         279       1950     245  DFN Verein zur Foerderung eines Deutsch
   786         186       1774     183  JANET Jisc Services Limited, GB
   559         115        550     106  SWITCH Peering requests: peering at switch
  1103          97       1264      84  SURFNET-NL SURFnet, The Netherlands, NL
   137          82        677      77  ASGARR Consortium GARR, IT
   553          72        449      72  BELWUE BelWue-Koordination, DE
  2200          67        647      61  FR-RENATER Reseau National de telecommu
  2614          58         33      56  ROEDUNET, RO
  1930          57         81      52  RCCN Fundacao para a Ciencia e a Tecnol
  1653          53        167      50  SUNET SUNET Swedish University Network,

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         176        207      41  Rede Nacional de Ensino e Pesquisa, BR
 28391         152         10      66  Universidad Juarez Autonoma de Tabasco,
 11340          94         24      54  Red Universitaria Nacional, CL
  1251          65         37      20  FUNDACAO DE AMPARO A PESQUISA DO ESTADO
  2715          58        102      38  Fundacao Carlos Chagas Filho de Amparo 
 19611          45         17       2  Associacao Antonio Vieira - Unisinos, B
  4270          44         16       1  Red de Interconexion Universitaria, AR
 61468          41          3      15  CEDIA, EC
 28614          38          2       2  Fundacao Universidade Regional de Blume
 28571          37         26      15  UNIVERSIDADE DE SAO PAULO, BR

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         349        319      73  TENET-1, ZA
 36914         193         82       3  KENET-AS, KE
  8094          50         48       4  PUKNET, ZA
327700          44         16       1  MoRENet, MZ
327687          38         28       3  RENU, UG
  6879          24          2       9  ENSTINET-, EG
 37501          11         49       6  UOFS, ZA
 37182          10          8       1  TERNET, TZ
 36982           8         33       8  UCT, ZA
 37215           8          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         610       2156     457  SINET-AS Research Organization of Infor
  7497         433        182      24  CSTNET-AS-AP Computer Network Informati
  2018         349        319      73  TENET-1, ZA
   680         279       1950     245  DFN Verein zur Foerderung eines Deutsch
  7896         251         51       7  NU-AS, US
   668         212        718     176  DNIC-AS-00668, US
   376         203        178     152  RISQ-AS, CA
  5786         200         16       1  UPRENET, PR
 36914         193         82       3  KENET-AS, KE
   786         186       1774     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         433          409  CSTNET-AS-AP Computer Network Information Cente
  2018         349          276  TENET-1, ZA
  7896         251          244  NU-AS, US
  5786         200          199  UPRENET, PR
 36914         193          190  KENET-AS, KE
 58647         165          163  KAGAWAU-AS Kagawa University, JP
  1916         176          135  Rede Nacional de Ensino e Pesquisa, BR
 18558         135          131  NETBLK-RCOEK, US
 55824         113          102  NKN-CORE-NW NKN Core Network, IN
  2920         108          102  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
     19176  UNALLOCATED  63.81.146.0/24           32278  GETWIRELESS, US
     19176  UNALLOCATED  63.108.136.0/23          32278  GETWIRELESS, US
     19176  UNALLOCATED  63.108.137.0/24          32278  GETWIRELESS, US
     19176  UNALLOCATED  63.108.138.0/24          32278  GETWIRELESS, US
     19176  UNALLOCATED  63.127.160.0/22          32278  GETWIRELESS, US
     19176  UNALLOCATED  63.127.161.0/24          32278  GETWIRELESS, US
     19176  UNALLOCATED  63.127.162.0/24          32278  GETWIRELESS, US
     19176  UNALLOCATED  63.127.163.0/24          32278  GETWIRELESS, US
     19176  UNALLOCATED  63.127.168.0/21          32278  GETWIRELESS, US
     19176  UNALLOCATED  63.127.169.0/24          32278  GETWIRELESS, US

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

Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             1103  SURFNET-NL SURFnet, The Netherlands, NL

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

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

Unassigned Network     ASN Information  AS Name
192.31.196.0/24      Origin:       112  UNASSIGNED
192.31.196.0/24     Transit:      1103  SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24       Origin:      1103  SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24      Transit:       293  ESNET, US

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       /14:36      /15:123     /16:2057    /17:403     /18:440     
/19:602     /20:948     /21:1004    /22:1607    /23:1728    /24:10627   
/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         179         193  KENET-AS, KE
 30041          64          64  RACE, US
 23024          53         114  OCDE, US
327700          38          44  MoRENet, MZ
 18530          34          84  ISOMEDIA-1, US
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
 25977          31          45  HCCS, US
 16713          30          50  NOANET-WA, US
263282          30          37  FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN
 18632          29          55  VOLCANO-VISION, US

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

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

   1:4         5:16        6:4         8:5        12:1        14:83     
  15:1        16:3        18:44       23:21       24:5        31:6      
  35:1        37:6        38:20       40:1        41:122      42:8      
  44:5        45:43       46:6        47:1        49:8        50:11     
  52:7        59:4        60:4        61:3        62:6        63:84     
  64:121      65:23       66:72       67:60       68:19       69:59     
  70:1        71:1        72:50       74:34       76:41       77:6      
  78:3        79:10       80:17       81:27       82:5        83:7      
  84:5        85:35       87:2        88:1        89:10       91:35     
  92:1        93:19       94:5        95:5        96:5        97:1      
  98:6        99:1       101:2       102:5       103:210     104:88     
 106:1       107:30      108:10      109:6       110:3       112:4      
 114:23      116:5       117:61      119:22      121:10      123:8      
 124:39      125:5       128:86      129:176     130:95      131:82     
 132:58      133:139     134:102     136:212     137:82      138:8      
 139:5       140:49      141:3       142:41      143:35      144:52     
 145:1       146:218     147:63      148:161     149:14      150:39     
 151:9       152:81      153:11      154:23      155:54      156:68     
 157:26      158:39      159:117     160:29      161:55      162:49     
 163:64      164:31      165:56      166:2       167:15      168:130    
 169:10      170:71      171:1       172:2       173:14      174:8      
 175:19      176:1       177:10      178:1       179:7       180:21     
 181:11      182:1       184:5       185:37      186:3       187:18     
 188:13      189:3       190:48      191:37      192:1497    193:198    
 194:124     195:57      196:148     197:103     198:547     199:336    
 200:255     201:39      202:585     203:403     204:376     205:191    
 206:227     207:181     208:119     209:139     210:176     211:14     
 212:41      213:4       214:7       216:115     217:14      218:25     
 219:8       220:17      222:5       223:3      

End of report


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