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

REN Routing Table Report cscora at bgp.nsrc.org
Wed Mar 27 22:05:39 UTC 2024


IPv4 R&E Routing Table Report   22:05 GMT Wed 27 Mar, 2024

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

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

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

BGP routing table entries examined:                               19421
    Prefixes after maximum aggregation (per Origin AS):           11179
    Deaggregation factor:                                          1.74
    Unique aggregates announced (without unneeded subnets):       12419
    Number of IPv4 prefixes with a valid ROA:                      6255
    Number of IPv4 prefixes with an invalid ROA:                      7
    Number of IPv4 prefixes with no ROA:                          13159
Total ASes present in the Internet Routing Table:                  2831
    Prefixes per ASN:                                              6.86
Origin-only ASes present in the Internet Routing Table:            2445
Origin ASes announcing only one prefix:                            1085
Transit ASes present in the Internet Routing Table:                 386
Transit-only ASes present in the Internet Routing Table:             75
Paths with bogon ASNs present in the IPv4 Routing Table:              4
Average AS path length visible in the Internet Routing Table:       4.1
    Max AS path length visible:                                      19
    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:                      43921
Number of 32-bit ASNs visible in the Routing Table:                 678
Prefixes from 32-bit ASNs in the Routing Table:                    2046
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:              1
Number of addresses announced to Internet:                    260175872
    Equivalent to 15 /8s, 129 /16s and 248 /24s
    Percentage of available address space announced:                7.0
    Percentage of allocated address space announced:                7.0
    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:        2123

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

Prefixes being announced by APNIC Region ASes:                     4753
    Total APNIC prefixes after maximum aggregation:                2323
    APNIC Deaggregation factor:                                    2.05
Prefixes being announced from the APNIC address blocks:            4799
    Unique aggregates announced from the APNIC address blocks:     2711
APNIC Region origin ASes present in the Internet Routing Table:     582
    APNIC Prefixes per ASN:                                        8.25
APNIC Region origin ASes announcing only one prefix:                246
APNIC Region transit ASes present in the Internet Routing Table:     60
Average APNIC Region AS path length visible:                        4.2
    Max APNIC Region AS path length visible:                         14
Number of APNIC region 32-bit ASNs visible in the Routing Table:    227
Number of APNIC addresses announced to Internet:               47243520
    Equivalent to 2 /8s, 208 /16s and 225 /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:                      8748
    Total ARIN prefixes after maximum aggregation:                 5261
    ARIN Deaggregation factor:                                     1.66
Prefixes being announced from the ARIN address blocks:             8583
    Unique aggregates announced from the ARIN address blocks:      5672
ARIN Region origin ASes present in the Internet Routing Table:     1278
    ARIN Prefixes per ASN:                                         6.72
ARIN Region origin ASes announcing only one prefix:                 445
ARIN Region transit ASes present in the Internet Routing Table:     165
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          14
Number of ARIN region 32-bit ASNs visible in the Routing Table:     203
Number of ARIN addresses announced to Internet:               136007424
    Equivalent to 8 /8s, 27 /16s and 79 /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:                      3539
    Total RIPE prefixes after maximum aggregation:                 2847
    RIPE Deaggregation factor:                                     1.24
Prefixes being announced from the RIPE address blocks:             3667
    Unique aggregates announced from the RIPE address blocks:      3049
RIPE Region origin ASes present in the Internet Routing Table:      676
    RIPE Prefixes per ASN:                                         5.42
RIPE Region origin ASes announcing only one prefix:                 305
RIPE Region transit ASes present in the Internet Routing Table:     101
Average RIPE Region AS path length visible:                         4.6
    Max RIPE Region AS path length visible:                          16
Number of RIPE region 32-bit ASNs visible in the Routing Table:     149
Number of RIPE addresses announced to Internet:                69316608
    Equivalent to 4 /8s, 33 /16s and 176 /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:                    1378
    Total LACNIC prefixes after maximum aggregation:                557
    LACNIC Deaggregation factor:                                   2.47
Prefixes being announced from the LACNIC address blocks:           1378
    Unique aggregates announced from the LACNIC address blocks:     755
LACNIC Region origin ASes present in the Internet Routing Table:    163
    LACNIC Prefixes per ASN:                                       8.45
LACNIC Region origin ASes announcing only one prefix:                57
LACNIC Region transit ASes present in the Internet Routing Table:    25
Average LACNIC Region AS path length visible:                       5.3
    Max LACNIC Region AS path length visible:                        14
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    67
Number of LACNIC addresses announced to Internet:               4802304
    Equivalent to 0 /8s, 73 /16s and 71 /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:                    990
    Total AfriNIC prefixes after maximum aggregation:               180
    AfriNIC Deaggregation factor:                                  5.50
Prefixes being announced from the AfriNIC address blocks:           993
    Unique aggregates announced from the AfriNIC address blocks:    231
AfriNIC Region origin ASes present in the Internet Routing Table:    54
    AfriNIC Prefixes per ASN:                                     18.39
AfriNIC Region origin ASes announcing only one prefix:               32
AfriNIC Region transit ASes present in the Internet Routing Table:   10
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       19
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   32
Number of AfriNIC addresses announced to Internet:              2805760
    Equivalent to 0 /8s, 42 /16s and 208 /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     464  SINET-AS Research Organization of Infor
  7497         441        180      23  CSTNET-AS-AP Computer Network Informati
  1237         192         74     142  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         129       4192      72  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/CENIC/data-ASnet-APNIC

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8075         456      13293     385  MICROSOFT-CORP-MSN-AS-BLOCK, US
   668         203        648     172  DNIC-AS-00668, US
   376         201        162     151  RISQ-AS, CA
  5786         198         16       1  UPRENET, PR
  2152         150        507      94  CSUNET-NW, US
 18558         141         18       4  NETBLK-RCOEK, US
    81         127        521      30  NCREN, US
   270         117        328      81  AS270, US
 23024         109          7      19  OCDE, US
  2920         102         34       7  LACOE, US

Complete listing at https://bgp.nsrc.org/REN/CENIC/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         134         24       5  ISU Internet Services Unit ISU, SA
   559         114        533     104  SWITCH Peering requests: peering at switch
  1103          95       1503      83  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/CENIC/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         139        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          49         16       2  Red de Interconexion Universitaria, AR
 19611          48         17       2  Associacao Antonio Vieira - Unisinos, B
  2715          45         99      34  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/CENIC/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         205         82       3  KENET-AS, KE
327687         164         28       3  RENU, UG
  8094          47         48      18  PUKNET, ZA
327700          44         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/CENIC/data-ASnet-AFRINIC

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2907         591       2162     464  SINET-AS Research Organization of Infor
  8075         456      13293     385  MICROSOFT-CORP-MSN-AS-BLOCK, US
  7497         441        180      23  CSTNET-AS-AP Computer Network Informati
  2018         380        319      71  TENET-1, ZA
   680         284       1899     250  DFN Verein zur Foerderung eines Deutsch
 36914         205         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         192         74     142  KREONET-AS-KR KISTI, KR

Complete listing at https://bgp.nsrc.org/REN/CENIC/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         380          309  TENET-1, ZA
 36914         205          202  KENET-AS, KE
  5786         198          197  UPRENET, PR
 58647         182          180  KAGAWAU-AS Kagawa University, JP
327687         164          161  RENU, UG
 18558         141          137  NETBLK-RCOEK, US
  8895         134          129  ISU Internet Services Unit ISU, SA
 55824         131          112  NKN-CORE-NW NKN Core Network, IN
  1916         139           97  Rede Nacional de Ensino e Pesquisa, BR

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
     65208  PRIVATE      63.225.1.0/24            11570  RESERVED, ZZ
    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
     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

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

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

Unassigned Network     ASN Information  AS Name
192.31.196.0/24      Origin:       112  RESERVED, ZZ
192.31.196.0/24     Transit:      1103  SURFNET-NL SURFnet, The Netherlands, NL

Complete listing at https://bgp.nsrc.org/REN/CENIC/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        /9:1       /10:3       /11:7       /12:23      
/13:30      /14:59      /15:151     /16:2095    /17:451     /18:467     
/19:578     /20:902     /21:905     /22:1561    /23:1593    /24:10595   
/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         192         205  KENET-AS, KE
  8895         129         134  ISU Internet Services Unit ISU, SA
  8075          99         456  MICROSOFT-CORP-MSN-AS-BLOCK, US
 23024          51         109  OCDE, US
 32440          38          61  LONI, US
327700          38          44  MoRENet, MZ
  3267          35          77  RUNNET, RU
 18632          33          66  VOLCANO-VISION, US
200521          33          56  SEAP-AGE, ES
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR

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

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

   1:2         2:1         4:2         5:16        6:4         8:2      
  12:1        13:33       14:91       23:8        24:3        31:1      
  35:6        38:8        40:1        41:119      42:10       44:6      
  45:48       46:6        47:1        49:9        50:6        52:6      
  59:19       60:6        61:3        62:16       63:38       64:50     
  65:5        66:62       67:46       68:17       69:26       70:2      
  71:1        72:8        74:53       76:42       77:11       78:3      
  79:10       80:12       81:27       82:6        83:7        84:8      
  85:43       86:4        87:1        89:10       91:53       92:4      
  93:4        94:6        95:3        96:5        97:2        98:2      
 101:2       102:39      103:330     104:77      107:16      108:12     
 109:7       111:17      113:4       114:24      116:8       117:61     
 118:33      119:20      121:27      122:8       123:8       124:42     
 125:5       128:85      129:41      130:84      131:68      132:59     
 133:157     134:110     135:1       136:197     137:143     138:60     
 139:5       140:38      141:4       142:44      143:24      144:26     
 145:5       146:135     147:59      148:193     149:12      150:49     
 151:11      152:133     153:14      154:30      155:67      156:67     
 157:22      158:35      159:116     160:34      161:23      162:40     
 163:78      164:14      165:49      166:1       167:11      168:121    
 169:6       170:116     171:1       172:3       173:7       175:25     
 176:9       177:6       178:1       179:13      180:15      181:1      
 182:9       184:3       185:78      186:3       187:17      188:14     
 189:3       190:17      191:13      192:1489    193:263     194:134    
 195:68      196:202     197:121     198:489     199:297     200:257    
 201:37      202:635     203:419     204:368     205:137     206:189    
 207:148     208:82      209:124     210:210     211:14      212:168    
 213:5       214:8       216:91      217:10      218:22      219:5      
 220:17      222:2       223:14     

End of report


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